HYDRAULIC STEERING SYSTEMS

Transcription

1 HYDRAULIC STEERING SYSTEMS

2

3 INDEX Company Profile and Introduction 2-5 Hydraulic Steering Systems 6-7 Composition and Working Principle Helm Pumps 8-3 Heavy Duty Helm Pumps 4-6 Systems Inboard Steering Cylinders 3-33 Inboard Heavy Duty Cylinders Manual Inboard Steering Systems Order Guide 37 Autopilot Power Units Autopilot Order Guide Power-Assisted Inboard Steering Systems Features and Working Principle Power-Assisted Inboard Cylinders Power-Assisted Electro-Hydraulic Power Units 50 Power-Assisted Steering System Applications and Systems 5-55 Power-Assisted Steering System: Big Range 56 Steering System for Catamarans 57 NOTE: Twin Disc Srl declines any liability for possible mistakes in this catalogue due to printing errors and reserves the right to make any modification that is considered to be necessary or useful for its products. Publishing rights, trade marks, part numbers and photographs present on this catalogue are Twin Disc Srl property or it has the necessary authorization to use them. So, all rights are reserved and any reproduction, even partial, is forbidden. Our products cannot be installed on racing boats without our previous authorization. Hydrostatic Steering Systems with Engine-Driven Pumps 58 Accessories Fittings 6-62 International Distributors back cover

4 4 High Quality, Complete Solutions

5 Throughout our nearly sixty years of experience, BCS has become a leading company in the production and worldwide distribution of high quality marine equipment. The acquisition by Twin Disc, Inc. leader in several different areas such as marine and industrial, heavy duty transmissions and the oil extraction industry has consolidated its position on the market as part of a multinational group. Twin Disc SRL combines BCS, BCS Service, Twin Disc Technodrive and Twin Disc Propulsion. Twin Disc SRL is also supported by a sister-company, Rolla SP Propellers. Global Package Twin Disc SRL offers to boat builders and design engineers a complete package of products, from propulsion systems to gearboxes and transmissions up to control and steering systems, together with customized solutions and efficient technical support. Also global customer service for the development and realization of the whole kinematics system. A dynamic team of engineers, technicians and professional people is devoted to support the customer in any step: from concept of the project to the planning, through prototype development and design definition, up to bench and field testing, production, assembly, installation and service also on board. Production plant in Limite sull Arno Twin Disc SRL works alongside the customer every day. We have established a unique worldwide system dedicated to the marine industry based on our ability to acknowledge and anticipate market requests, the certified reliability of our products, skilled service and the continuous research of technological innovation. The production plant of Limite sull Arno produces equipment covering several application fields: Hydraulic and electronic steering systems, complete shaft lines for boats up to 40 meters, trim tab systems in stainless steel or aluminum, electric and hydraulic bow and stern thrusters, electrohydraulic gangways and side ladders for large applications, as well as a large variety of stainless steel hydraulic actuators and multi-function electrohydraulic power units. 3

6 6 From concept to production: prototype development, care for design, field testing, product definition

7 Twin Disc SRL is certified by Registro Italiano Navale (RINA) according to the requirements of the standards UNI EN ISO 900:2000. All the management and production processes of the company, from the material research and the design of products, to the planning of the production cycles, checking tests and shipping management, undergo the constant verification of the strictest quality criteria in order to guarantee the highest reliability level. As a result of more than 50 years of experience, our steering systems are a synthesis between selected materials, innovative design and state-of-art technical solutions. All components are built with high precision systems and tooling and meet the requirements of the best survey authorities such as: Rina Lloyd s Register, ABS, Bureau Veritas etc. As a further guarantee of efficiency and durability, certificates for special applications are also available upon request. Conforming with the Standard 94/25/CE, as amended by the Standard 2003/44/CE, and also included in the Type Accepted of Program NMMA, the Twin Disc line of hydraulic pumps and cylinders covers any type of application: outboard, stern-drives and inboard systems for pleasure and coercial vessels. 5

8 Highly versatile, Twin Disc steering systems are available for use in pleasure and coercial applications, as well as mega yachts. COMMERCIAL 6

9 HYDRAULIC STEERING SYSTEMS CompoSITION AND WORKING PRINCIPLE In order to get the best control with the minimum effort, the steering system must match the specific vessel s requirements. A standard steering system in its basic composition includes major elements such as: Hydraulic helm pump of the axial piston type, which pumps oil into the system each time the steering wheel is turned. The pump is provided with a non-return (lock) valve to prevent any movement of the rudder or the outboard engine when the pump is not controlled, and with a relief valve to protect the steering system from any sudden and excessive pressure increase. Hydraulic cylinder, which is the real rudder actuator and determines the power of the system. It is extremely important to select the right cylinder model suitable for the torque required. The pump and the cylinder are connected together by means of: Rigid or flexible hoses suitable for hydraulic applications and sized according to the pump displacement. The rigid piping guarantees the best steering performances, but it is also possible to use flexible hose for rudder torque not higher than 290 Kg/m ( in/lb). To satisfy different needs, or adapt to specific solutions, this basic configuration can be integrated with many other steering components such as: Hydraulic helm pumps for additional control stations Autopilot power unit, available in a wide range of displacements for combination with steering cylinders having a volume up to 3900 cc Many types of valve or accessories (see pages 59-60) The working principle of the basic steering system is very simple: A. Turning the steering wheel in the direction desired sends an oil flow from the helm pump to the steering cylinder. B. This flow, which enters the cylinder, moves the piston, as well as the rod connected to the tiller arm, thus causing the rudder to rotate. C. Oil displaced from the opposite side of the cylinder flows back to the helm pump. D. To rotate the rudder in the opposite direction, simply turn the helm pump the other way. Note: In case of dual station, the oil cap of the pilot house shall be closed. If a power unit with automatic filling is installed both caps shall be closed. PLEASURE CRAFT 7

10 HELM PUmpS Completely redesigned, the new line of Twin Disc helm pumps has a range of models in different displacements, as well as a variety of configurations and mounting options. A compact design with minimal helm protrusion is one of the main features of this axialpiston pump, which has been specifically designed to respond to various drive conditions and ensure smooth and light control. The Twin Disc steering helm is made of a high-strength cast aluminum housing that is corrosion and abrasion resistant. Also supplied is a lock valve, which prevents any possible rudder feedback, while a relief valve protects the steering components from over-pressure. Twin Disc steering helms are available in numerous mounting configurations that allow the pump to be installed at various positions on the console. The Basic version, which is normally mounted outside on the dash surface and with the steering shaft perpendicular to it, can be combined with different mounting kits allowing the helm protrusion to be reduced or even disappear behind the dash. Features Compact design Wide range of displacements: 20 cc 25 cc 30 cc 35 cc 42 cc Variety of mounting configurations: Front, Intermediate, Rear and with Sport Tilt Built-in lock valve to prevent any rudder feedback Built-in relief valve to protect the system from over-pressure Cast aluminium housing for a high corrosion resistance Pump shaft with ABYC 3/4 taper Easy installation Built according to quality criteria and approved Provided with elbow fittings of /4 NPT for 3/8 hose (For 42 cc helm pump and d. /2 hose) Provided with no-bleeder cap for additional control station NMMA Type Approved A Sport Tilt mechanism is available for Twin Disc steering helms for a more comfortable driving position (mounting angles other than 90 degrees). Frontal Mount Helm (Basic Helm) Basic Helm + Rear Mount Kit Basic Helm + Intermediate Mount Kit Helm with Sport Tilt 8

11 helm pumps 20 cc - 30 cc - 42 cc frontal mounting - BASic helm Mounting Configuration Frontal Mounting Order Guide Helm pump Model Displacement Code Technical Specifications P20BAP P20BA P30BAP P30BA P42BAP P42BA 20 cc/rev IT cu.in/rev IT cc/rev IT cu.in/rev IT693 42cc/rev 2.56 cu.in/rev IT275 IT694 Model P20BAP P20BA P30BAP P30BA Mounting Configuration Nonreturn valve Relief valve Frontal Yes Yes Frontal Yes Yes Displacement # of pistons Relief valve setting pressure Fittings included M wheel diameter Max. wheel diameter Weight 20 cc/rev 70 bar 5 /4 NPTF - 3/8 D.E Kg.22 cu.in/rev 000 psi G/4 - hose d. 0 3, lb 30 cc/rev 70 bar Kg 5 /4 NPTF - 3/8 D.E..83 cu.in/rev 000 psi G/4 - hose d. 0 3, lb P42BAP P42BA Frontal Yes Yes 42 cc/rev 70 bar /4 NPTF - 3/8 D.E Kg 7 /4 NPTF - /2 D.E cu.in/rev 000 psi G/4 - hose d. 0 7, lb G/4 - hose d. 2 NOTE: The Twin Disc 20 cc-30 cc-42 cc helm pumps are provided with inch fittings. Versions with metric fittings are also available. ø 76 (3 ) 67 (2,6 ) 09 (4,25 ) Nϒ 4 M6 (0,24 ) 3,5 (,25 ) 8,5 (0,35 ) 67 (2,6 ) 20 (0,79 ) ø (4,35 ) 9,74 (0,78 ) 2,386ϒ (2ϒ23 9,5 ) 5 (0,2 ) ø25 (0,98 ) 203,5 (8 ) 54 (2,3 ) ø5 (4,5 ) 45 (,8 ) 9

12 helm pumps 20 cc - 30 cc - 42 cc rear mounting Mounting Configuration Rear Mounting Order Guide helm pump Model Displacement Code P20BAP + Kit MK30 P20BA + Kit MK30 P30BAP + Kit MK30 P30BA + Kit MK30 P42BAP + Kit MK30 P42BA + Kit MK30 20 cc/rev IT273+IT cu.in/rev IT692+IT cc/rev IT274+IT cu.in/rev IT693+IT cc/rev IT275+IT cu.in/rev IT694+IT698 Technical Specifications Model P20BAP + MK30 P20BA + MK30 P30BAP + MK30 P30BA + MK30 P42BAP + MK30 P42BA + MK30 Non-return valve Relief valve Rear Yes Yes Rear Yes Yes Rear Yes Yes Mounting Configuration Displacement 20 cc/rev.22 cu.in/ rev 30 cc/rev.83 cu.in/ rev 42 cc/rev 2.56 cu.in/ rev # of pistons Relief valve setting pressure Fittings included M wheel diameter Max. wheel diameter Weight 70 bar /4 NPTF - 3/8 D.E Kg 000 psi G/4 - hose d. 0 3, lb 70 bar 000 psi /4 NPTF - 3/8 D.E. G/4 - hose d , Kg 6.7 lb 70 bar /4 NPTF - 3/8 D.E Kg /4 NPTF - /2 D.E. 000 psi G/4 - hose d. 0 G/4 - hose d. 0 7, lb NOTE: The Twin Disc 20 cc - 30 cc - 42 cc helm pumps are provided with inch fittings. Versions with metric fittings are also available. Please specify when placing the order. For this pump model it is suggested the purchase of the filling kit mod. K00 (oil filling kit code IT8599). See page 59. 3,5 (,24 ) 9,74 (0,78 ) 2,386ϒ 2ϒ23 9,5 59 (2,4 ) ø30 m (,8 ) 20 (0,79 ) 2 (0,08 ) Nϒ3 M (4,7 ) (2,09 ) (,7 -,26 ) 2 (0,47 ) 250 (9,84 ) ø5 (4,53 ) ø30 (5,2 ) 57 (2,24 ) 40,5 (,5 38 (,50 ) Basic Helm (0,2 ) Rear mount kit Rear mount kit mod. MK30 mod. MK30

13 helm pumps 20 cc - 30 cc - 42 cc REAR mounting Mounting Configuration Rear Mounting Order Guide helm pump Model Displacement Code P20BAP + Kit MK40 P20BA + Kit MK40 P30BAP + Kit MK40 P30BA + Kit MK40 P42BAP + Kit MK40 P42BA + Kit MK40 20 cc/rev IT273+IT cu.in/rev IT692+IT cc/rev IT274+IT cu.in/rev IT693+IT cc/rev IT275+IT cu.in/rev IT694+IT24855 Technical Specifications Model P20BAP + MK40 P20BA + MK40 P30BAP + MK40 P30BA + MK40 P42BAP + MK40 P42BA + MK40 Mounting Non-return Configuration valve 59 (2,4 ) 27 ( ) Relief valve Rear Yes Yes Rear Yes Yes Rear Yes Yes Displacement 20 cc/rev.22 cu.in/ rev 30 cc/rev.83 cu.in/ rev 42 cc/rev 2.56 cu.in/ rev 06 (4,7 ) 53 (2,09 ) # of pistons ø6 (4,6 ) Relief valve setting pressure Fittings included M wheel diameter Max. wheel diameter Weight 70 bar /4 NPTF - 3/8 D.E Kg 000 psi G/4 - hose d.0 3, lb 70 bar /4 NPTF - 3/8 D.E Kg 000 psi G/4 - hose d.0 3, lb 70 bar /4 NPTF - 3/8 D.E Kg /4 NPTF - /2 D.E. 000 psi G/4 - hose d.0 G/4 - hose d.2 7, lb NOTE: The Twin Disc 20 cc - 30 cc - 42 cc helm pumps are provided with inch fittings. Versions with metric fittings are also available. Please specify when placing the order. NOTE: For this pump model it is suggested the purchase of the filling kit mod. K00 (oil filling kit code IT8599). See page 59. Basic Helm 3,5 (,24 ) 2,386ϒ 2ϒ23 9,5 ø30 (,8 ) 20 (0,79 ) 2 (0,08 ) 250 (9,84 ) ø5 (4,53 ) 5 (0,2 ) Rear mount kit mod. MK40 Rear mount kit mod. MK40

14 Helm pumps 20 cc - 30 cc - 42 cc intermediate mounting Mounting Configuration Order Guide helm pump Model Displacement Code P20BAP + Kit MK0 P20BA + Kit MK0 P30BAP + Kit MK0 P30BA + Kit MK0 P42BAP + Kit MK0 P42BA + Kit MK0 20 cc/rev IT273+IT cu.in/rev IT692+IT cc/rev IT274+IT cu.in/rev IT693+IT cc/rev IT275+IT cu.in/rev IT694+IT699 Technical Specifications Model P20BAP+MK0 P20BA+MK0 P30BAP+MK0 P30BA+MK0 P42BAP+MK0 P42BA+MK0 Mounting Configuration Nonreturn valve Relief valve Intermediate Yes Yes Intermediate Yes Yes Intermediate Yes Yes Displacement # of pistons Relief valve setting Fittings included pressure 70 bar /4 NPTF - 3/8 D.E. G/4 - hose d.0 70 bar /4 NPTF - 3/8 D.E. G/4 - hose d.0 70 bar /4 NPTF - 3/8 D.E. /4 NPTF - /2 D.E. G/4 - hose d.0 G/4 - hose d.2 M wheel diameter Max. wheel diameter Weight 20 cc/rev Kg 5.22 cu.in/rev 000 psi 3, lb 30 cc/rev Kg 5.83 cu.in/rev 000 psi 3, lb 42 cc/rev Kg 2.56 cu.in/rev psi 7, lb 32,5 (5,22 ) 02 (4 ) 203,8 (8 ) 4 (,6 ) 3 (4,4 )50 5 (,97 ) (0,59 ) 9,74 (0,78 ) 2,386ϒ 2ϒ23 9,5 4 (0,6 ) 02 (4 ) 32,5 (5,22 ) MAX 50 - MIN 0 (MAX.,97 - MIN 0,39 ) M6 Basic Helm 2 Intermediate mount kit Intermediate mod. Mount MK0 Kit mod. MK0

15 Helm pumps 20 cc - 30 cc - 42 cc mounting with SPORT tilt Mounting Configuration Order Guide helm pump Model Displacement Code P20TSP P20TS P30TSP P30TS P42TSP P42TSP 20 cc/rev IT cu.in/rev IT cc/rev IT cu.in/rev IT cc/rev IT cu.in/rev IT25585 Technical Specifications Model P20TSP P20TS P30TSP P30TS P42TSP P42TS Mounting Configuration Non-return valve Relief valve Tilt Yes Yes Tilt Yes Yes Tilt Yes Yes Displacement # of pistons Relief valve setting pressure Fittings included M wheel diameter Max. wheel diameter Weight 20 cc/rev 70 bar 5 /4 NPTF - 3/8 D.E Kg.22 cu.in/rev 000 psi G/4 - hose d.0 3, lb 30 cc/rev 70 bar 5 /4 NPTF - 3/8 D.E Kg.83 cu.in/rev 000 psi G/4 - hose d.0 3, lb 42 cc/rev 70 bar /4 NPTF - 3/8 D.E Kg 7 /4 NPTF - /2 D.E cu.in/rev 000 psi G/4 - hose d.0 7, lb G/4 - hose d.2 NOTE: For this model we suggest purchasing the filling kit mod. K00 (oil filling kit code IT8599). See page 59. ø76 (3 ) ø82 (3,2 ) M6 36ϒ 24ϒ 2ϒ 2ϒ 34,6 (,35 ) 26 ( ) 34 (,3 ) 5 (0,2 ) 2.386ϒ (2ϒ23 9,5 ) 20 (0,79 ) 20 (0,79 ) 30,6 (5, ) 90 (7,5 ) 225 (8,8 ) 209 (8,2 ) 56 (6, ) ø5 (4,5 ) ø26 (5 ) 98 (3,8 ) 3

16 heavy duty HELM PUMPS mod. P63t - P89t Mounting Configuration Rear Mounting Mounting Configuration Frontal Mounting Order Guide HEAVY DUTY helm pump Model Displacement Code P63 P89T 63 cc/rev 3.84 cu.in/rev 89 cc/rev 5.5 cu.in/rev IT3996 IT4003 Technical Specifications Model Mounting Non-return valve Relief valve Displacement # of pistons Fittings provided M wheel diameter Max. wheel diameter Weight P63T Rear Frontal No No P89T Rear Frontal No No NOTE: Available with metrical fittings only. 63 cc/rev ,7 Kg 5 / 3.84 cu.in/rev 27, lb 89 cc/rev ,9 Kg 7 / 5.5 cu.in/rev 27, lb M6 ø25 (0,98 ø30 (,8 20 (0,78 ) 3, (,22 ) Nϒ4 ø0,5 (0,4 ) ø20 (4,72 ) ø50 (5,9 ) ø66 (6,53 ) ø7,042 (0,67 ) 5 (0,9 ) 80 (3,4 ) 3, (5,6ϒ) 208,5 (8,20 ) 2,35972ϒ (2ϒ23 9,5 ) 339,6 (3,37 ) 95,5 (3,75 ) 5,5 (0,2 ) 20 (0,78 ) 4

17 heavy duty HELM PUMPS mod. P63s - p89s with oil tank Mounting Configuration Rear Mounting Mounting Configuration Frontal Mounting Order Guide HEAVY DUTY HELM PUMPS Model Displacement Code P63S P89S 63 cc/rev 3.84 cu.in/rev 89 cc/rev 5.5 cu.in/rev IT3995 IT4002 Technical Specifications Model Mounting Non-return valve Relief valve Displacement # of pistons Fittings provided M wheel diameter Max. wheel diameter Weight P63S Rear Frontal No No P89S Rear Frontal No No 63 cc/rev ,3 Kg 5 / 3.84 cu.in/rev 27, lb 89 cc/rev ,5 Kg 7 / 5.5 cu.in/rev 27, lb NOTE: Available with metrical fittings only. M6 ø25 (0,98 ) ø30 (,8 ) 0 (4,33 ) 3, 20 (0,78 ) (,22 ) 80 (3,4 ) 3, (5,6 ) 208,5 (8,20 ) 339,6 (3,37 ) ø7,042 (0,67 ) 5 (0,9 ) 2,35972ϒ (2ϒ23 9,5 ) 35 (5,3 ) Nϒ4 ø0,5 (0,4 ) 40 (5,5 ) ø20 (4,72 ) ø50 (5,9 ) 20 (0,78 ) 5,5 (0,2 ) 5

18 heavy duty HELM PUMPS mod. P05 - p5 - p9 with oil tank Mounting Configuration Frontal Mounting Order Guide HEAVY DUTY HELM PUMPS Model Displacement Code P05 P5 P9 05 cc/rev 6,4 cu.in/rev 5 cc/rev 9,2 cu.in/rev 9cc/rev,7 cu.in/rev IT4052 IT4082 IT4084 Technical Specifications Model Mounting Non-return valve Relief valve P05 Rear No No P5 Rear No No P9 Rear No No Displacement # of pistons Fittings provided M wheel diameter Max. wheel diameter Weight 05 cc/rev 5 G/ ,5 Kg 6,4 cu.in/rev 8 O.D. 39, ,39 lb 5 cc/rev 7 G/ ,2 Kg 9,2 cu.in/rev 8 O.D. 39, ,4 lb 9 cc/rev 7 G/ ,5 Kg,7 cu.in/rev 8 O.D. 39, ,00 lb NOTE: Available with metrical fittings only (5,7 ) ø00 (3,94 ) 96 (7,72 ) ø35 mn (,38 ) 64 (6,46 ) 40 (,57 ) (6,22 ) (2,76 ) 98 (7,8 ) 280 ( ) M22x, (0,2 )(,57 )(0,2 ) ø30 (,8 ) ø35 (,38 ) 2 (0,04 ) 76 (3 ) (2,99 )(,97 ) (0,79 ) 4,5 (0,8 ) 70 (2,76 ) 66 (6,54 ) ø2,5 (0,5 ) 0 (0,39 ) 6 (6,34 ) 6 (6,34 ) 96 (7,72 ) 96 (7,72 )

19 System Metrical Fittings Imperial Fittings ALUMINUM CYLINDER Components Model Code Qty. Cylinder CTA40U - CTA40 IT IT2675 Helm pump Choose the pump model according to the desired wheel turns below Hydraulic oil VG22 IT Bypass Choose the bypass model according to the pump-cylinder combination in the table below In case of additional station add: Second station helm pump Same pump model as above (see table on page bottom) Second station fittings kit IT IT23487 Hydraulic oil VG22 IT2334 In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Autopilot fittings kit IT IT23489 Pump-Cylinder Combination HELM PUMP Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P20BAP Cod. IT273 P20BA Cod. IT692 (*) P30BAP Cod. IT274 P30BA Cod. IT693 (*) P42BAP Cod. IT275 P42BA Cod. IT694 (*) CYLINDER # of wheel turns: 5,8 M hose size: 5/6 I.D. Tiller: 53-6,02 Angle: Torque: 57,83 Kgm in/lb M wheel diam.: 350-3,77 Bypass: cod. IT IT226 # of wheel turns: 3,9 M hose size: 5/6 I.D. Tiller: 53-6,02 Angle: Torque: 57,83 Kgm in/lb M wheel diam.: 350-3,77 Bypass: cod. IT IT226 CTA40U - Cod. / Part # IT5649 CTA40 - Cod. / Part # IT2675 Rudder torque calculated at the working pressure of 70 bar (000 psi). (*) For more details, see the basic helm section starting on page 9 to choose the desired mounting configuration. Steering Effort Key LIGHT NORMAL HEAVY 7

20 System 2 ALUMINUM CYLINDER Components Model Code Qty. Cylinder CTA65U - CTA65 CTA75U - CTA75 IT IT2676 IT IT2678 Helm pump Choose the pump model according to the desired wheel turns in the table below Hydraulic Oil VG22 IT Bypass Choose the bypass model according to the Pump-Cylinder combination in the table below In case of additional station add: Second station helm pump Same pump model as above (see table at bottom of page) Second station fittings kit IT IT23487 Hydraulic oil VG22 IT2334 In case of autopilot installation please add: Autopilot power unit(****) Choose autopilot power unit model in the Order Guide on pages Autopilot fittings kit IT IT23487 (****) POMPA p U m p - C Y L I N D E R COMBINATION Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P20BAP Cod. 273(*) P20BAP Cod. IT273 P20BA Cod. IT692 (*) P30BAP Cod. 274(*) HELM PUMP P30BAP Cod. IT274 P30BA Cod. IT693 (*) P42BAP Cod. 275(*) P42BAP Cod. IT275 P42BA Cod. IT694 (*) CYLINDER CTA65U - Cod. / Part # IT2677 CTA65 - Cod. / Part # IT2676 CTA75U - Cod. / Part # IT5763 CTA75 - Cod. / Part # IT2678 N. of wheel turns: 5,6 M hose size: 5/6 I.D. Tiller: 53-6,02 Angle: Torque: 83,8 Kgm in/lb M wheel diam: 350-3,77 Bypass: cod. IT IT226 N. of wheel turns: 6,3 M hose size: 5/6 I.D. Tiller : 75-6,89 Angle: Torque: 94,7 Kgm in/lb M wheel diam: 350-3,77 Bypass: cod. IT IT226 Rudder torque calculated at the working pressure of 70 bar (000 psi). (*) For more details, see the basic helm section starting on page 9 and choose the desired mounting configuration. (****) In case an autopilot with power unit filling is installed, the fitting kit is code IT IT Steering Effort Key LIGHT NORMAL HEAVY

21 System 3 ALUMINUM CYLINDER Components Model Code Qty. Cylinder CTA80U - CTA80 IT IT2679 Helm pump Choose the pump model according to the desired wheel turns below Hydraulic oil VG22 IT Bypass Choose the bypass model according to the Pump-Cylinder combination in the table below In case of additional station add: Second station helm pump Same pump model as above (see table on page bottom) Second station fittings kit IT23376 or IT2348 (***) IT23487 or IT23488 (***) Hydraulic oil VG22 IT2334 In case of autopilot installation please add: Autopilot power unit(****) Choose autopilot power unit model on pages Autopilot fittings kit(****) IT23377 or IT23373 (***) IT23489 or IT23490 (***) Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. HELM PUMP P20BAP Cod. IT273 P20BA Cod. IT692 (*) P30BAP Cod. IT274 P30BA Cod.IT693 (*) P42BAP Cod. IT275 P42BA Cod. IT694 (*) CYLINDER CTA80U Cod. / Part # IT2682 CTA80 - Cod. / Part # IT2679 N. of wheel turns: 7,2 M hose size: 5/6 I.D. Tiller: 200-7,87 Angle: Torque: 07,36 Kgm in/lb M wheel diam: 350-3,77 Bypass: cod. IT IT226 N. of wheel turns: 5, M hose size: 5/6-3/8 I.D. Tiller: 200-7,87 Angle: Torque: 07,36 Kgm in/lb M wheel diam: 450-7,7 Bypass: cod. IT IT23480 (***) IT226 - IT6968 (***) Rudder torque calculated at the working pressure of 70 bar (000 psi). (*) For more details, see the basic helm section starting on page 9 to choose the desired mounting configuration. (***) It is suggested for combination with 42cc helm pump if the total length between pump and cylinder exceeds 8 mt (****) In case an autopilot power unit with automatic filling is installed, the fitting kits are respectively the code IT23376-IT2348/IT IT

22 System 4 BRASS CYLINDER Components Model Code Qty. Cylinder CTB0U - CTB30U CTB0 - CTB30 IT IT269 IT IT5606 Helm pump Choose the pump model according to the desired wheel turns below Hydraulic oil VG22 IT Bypass Choose the bypass model according to the Pump-cylinder combination in the table below In case of additional station add: Second station helm pump Same pump model as above (see table on next page) Second station fittings kit Hydraulic oil VG22 IT IT2348 (***) IT IT23488 (***) IT IT23373 (***) IT IT23490 (***) In case of autopilot installation please add: Autopilot power unit(****) Choose autopilot power unit model in the Order Guide on pages Autopilot fittings kit IT23373 (****) - IT23490 (***) E possibile scegliere l accoppiamento cilindro/pompa per determinare il numero desiderato di giri da banda a banda. NOTA: lo sforzo necessario sulla ruota di governo è inversamente proporzionale al numero di giri da banda a banda: minore numero di giri, MAGGIORE durezza della ruota maggior e numero di giri, MINORE durezza Pump-Cylinder Combination Choose della combination ruota between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lockto-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, CTB0U the requested effort is reduced. Cod. / Part # 2687 P25FLY Cod (*) P20BAP Cod. IT273 P20BA Cod. IT692 (*) P35FLY HELM PUMP P42FLY Cod (*) Cod (*) P30BAP Cod. IT274 P30BA Cod. IT693 (*) N.giri ruota timone: 6,7 Tubo min: 3/8 I.D. (**) Barra: 53-6,02 Angolo: MT: 40,85 Kgm in/lb P42BAP Cod. IT275 Ruota P42BA Tim. Cod. IT694 min: 450 (*) -7,7 CYLINDER CTB0U - Cod. / Part # IT2687 CTB0 - Cod. / Part # IT2683 CTB30U Cod. / Part # IT269 CTB30 - Cod. / Part # IT5606 # of wheel turns: 6,7 M hose size: 3/8 I.D. Tiller: 53-6,02 Angle: Torque: 40,85 Kgm in/lb M wheel diam: 450-7,7 Bypass: cod. IT IT23480 (***) IT226 - IT6968 (***) N. of wheel turns: 7,7 M hose size: 3/8 I.D. Tiller: 80-7 Angle: Torque: 40,85 Kgm in/lb M wheel diam: 450-7,7 Bypass: cod. IT IT23480 (***) IT226 - IT6968 (***) Rudder torque calculated at the working pressure of 70 bar (000 psi). (*) For more details, see the basic helm section on page 9 to choose the desired mounting configuration. (***) It is suggested for combination with 42cc helm pump if the total length between pump and cylinder exceeds 8 mt (****) In case an autopilot power unit with automatic filling is installed, the fitting kit is code IT IT2348 / IT IT Steering Effort Key LIGHT NORMAL HEAVY

23 system 5 BRASS CYLINDER Components Model Code Qty. Cylinder CTB45U - CTB45 IT IT2692 Helm pump Choose the pump model according to the desired wheel turns below Hydraulic oil VG22 IT Bypass Choose the bypass model according to the Pump-Cylinder combination in the table here below In case of additional station add: Second station helm pump Same pump model as above (see table on page bottom) Second station fittings kit IT IT2488 Hydraulic oil VG22 IT2334 In case of autopilot installation please add: Autopilot power unit(****) Choose autopilot power unit model on pages Autopilot fittings kit IT IT23490 (****) Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. HELM PUMP P20BAP Cod. IT273 P20BA Cod. IT692 (*) P30BAP Cod. IT274 P30BA Cod. IT693 (*) P42BAP Cod. IT275 P42BA Cod. IT694 (*) CYLINDER N. of wheel turns: 8,6 M hose size: 3,8 I.D. Tiller: 200-7,8 Angle: Torque: 40,85 Kgm in/lb M wheel diam: 450-7,7 Bypass: cod. IT IT6968 CTB45 - Cod. / Part # IT2694 CTB45 - Cod. / Part # IT2692 Rudder torque calculated at the working pressure of 70 bar (000 psi). (*) For more details, see the basic helm section on page 9 to choose the desired mounting configuration. (****) In case an autopilot power unit with automatic filling is installed, the fitting kit is code IT IT

24 system 6 SINGLE-station steering system DOUBLE-station steering system Components Model Code Qty. Components Model Code Qty. Cylinder CTC200 IT2695 Cylinder CTC200 IT2695 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P63S IT3995 Main station pump P63T IT3996 Second station pump / / / Second station pump P63S IT3995 Pump fittings kit IT4359 IT Pump fittings kit IT23492 IT23493** Suggested m hose size Copper tube d.e.2 x or Copper tube d.e. 4 x / / Suggested m hose size Copper tube d.e.2 x or Copper tube d.e. 4 x / / Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter, the requested effort is reduced. P63T Cod. IT3996 (*) HELM PUMP P63S Cod. IT3995 (*) CYLINDER CTC200 Cod. / Part # IT2695 No. of wheel turns: 7,9 M hose size: copper tube d.e. 2x or copper tube d.e. 4x (**) Tiller: 75 MM / 6.9 Angle: Torque: 249,93 Kgm / 2643 lb. M wheel diam.: ,56 Pump P63 # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Non return valve Valve and Bypass code Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder IT4359 x 2 Qty. IT23500 IT5707 Copper tube d.e. 2 x < 5 mt - 45 IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x > 5 mt IT23492 IT5708 IT23500 IT6968 Copper tube d.e. 2 x < 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x > 5 mt Steering Effort Key LIGHT NORMAL HEAVY

25 System 7 SINGLE-station steering system DOUBLE-station steering system Components Model Code Qty. Components Model Code Qty. Cylinder CTC230 IT2698 Cylinder CTC230 IT2698 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P63S IT3995 Main station pump P63T IT3996 Second station pump / / / Second station pump P63S IT3995 Pump fittings kit IT4359 IT Pump fittings kit IT23492 IT23493** Suggested m hose size Copper tube d.e.2 x or Copper tube d.e. 4 x / / Suggested m hose size Copper tube d.e.2 x or Copper tube d.e. 4 x / / Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P63T Cod. IT3996 (*) HELM PUMP P63S Cod. IT3995 (*) CYLINDER CTC230 Cod. / Part # IT2698 No. of wheel turns: 7,9 M hose size: copper tube d.e. 2x or copper tube d.e. 4x (**) Tiller: 75 MM / 6.9 Angle: Torque: 249,93 Kgm / 2643 lb. M wheel diam.: ,56 Pump # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Non return valve Valve and Bypass code Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder IT4359 x 2 Qty. IT23500 IT5707 Copper tube d.e. 2 x < 5 mt - 45 P63 IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x > 5 mt IT23492 IT5708 IT23500 IT6968 Copper tube d.e. 2 x < 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x > 5 mt

26 system 8 SINGLE-Station Steering System DOUBLE-Station Steering System Components Model Code Qty. Components Model Code Qty. Cylinder CTC300 IT270 Cylinder CTC300 IT270 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P63S or P89S IT3995 IT3996 Main station pump P63T or P89T IT4002 IT4003 IT3995 Second station pump / / / Second station pump P63S or P89S IT4002 Pump fittings kit IT4360 IT Pump fittings kit IT436** IT23452** Suggested m hose size Copper tube d.e.4 x or Copper tube d.e.8 x,5 ** / Suggested m hose size Copper tube d.e.4 x or Copper tube d.e.8 x,5 ** Hydraulic oil VG22 IT Hydraulic oil VG22 IT Autopilot power unit Pump-Cylinder Combination See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Choose autopilot power unit model in the Order Guide on pages Fittings kit for autopilot Choose autopilot power unit model in the Order Guide on pages / Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-tolock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P63T Cod. IT3996 (*) P63S Cod. IT3995 (*) HELM PUMP P89T Cod. IT4003 (*) P89S Cod. IT4002 (*) CYLINDER CTC300 Cod. / Part # IT270 No. of wheel turns:,9 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 260 MM / 0,24 Angle: Torque: 374,89 Kgm / lb. M wheel diam.: ,56 No. of wheel turns: 8,4 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 260 MM / 0,24 Angle: Torque: 374,89 Kgm / lb. M wheel diam.: ,56 (*)Max. rudder torque calculated at a working pressure of 70 bar/000 psi. See the heavy duty pumps section on page 4 for more information. (**) To be used when the hose length between pump and cylinder exceeds 5 mt Pump P63 P89 # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Non return valve Valve and Bypass Code Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x < 5 mt - 45 IT436 x 2 Qty. IT23503 IT5709 Copper tube d.e. 8 x,5 > 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x < 5 mt IT23452 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 > 5 mt - 45 IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x < 5 mt - 45 IT436 x 2 Qty. IT23503 IT5709 Copper tube d.e. 8 x,5 > 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x < 5 mt IT23452 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 > 5 mt Steering Effort Key LIGHT NORMAL HEAVY

27 system 9 SINGLE-Station Steering System DOUBLE-Station Steering System Components Model Code Qty. Components Model Code Qty. Cylinder CTC400 or CTD30 IT5697 IT5697 IT5698 Cylinder CTC400 or CTD30 IT5698 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P63S or P89S IT3995 IT4002 Main station pump P63T or P89T Second station pump / / / Second station pump P63S or P89S Pump fittings kit Suggested m hose size Copper tube d.e.4 x or Copper tube d.e.8 x,5 ** IT4360 IT436** 2 Pump fittings kit / Suggested m hose size Copper tube d.e.4 x or Copper tube d.e.8 x,5 ** IT3996 IT4003 IT3995 IT4002 IT23493 IT23452 Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: / Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Fittings kit for autopilot Choose autopilot power unit model in the Order Guide on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-tolock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P63T Cod. IT3996 (*) P63S Cod. IT3995 (*) HELM PUMP P89T Cod. IT4003 (*) P89S Cod. IT4002 (*) CYLINDER Pump P63 P89 CTC400 Cod. / Part # IT5697 CTC30 Cod. / Part # IT5698 No. of wheel turns: 5,9 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 350 / 3,78 Angle: Torque: 400 Kgm / lb. M wheel diam.: ,56 No. of wheel turns: 3,4 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 75 / 6,88 Angle: Torque: 422 Kgm / lb. M wheel diam.: ,56 No. of wheel turns:,2 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 350 / 3,78 Angle: Torque: 400 Kgm / lb. M wheel diam.: ,56 No. of wheel turns: 9,5 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 260 / 0,24 Angle: Torque: 422 Kgm / lb. M wheel diam.: ,56 (*) Max. rudder torque calculated at a working pressure of 70 bar/000 psi. See the specific heavy duty pumps section on page 4 for more information. (**) To be used when the hose length between pump and cylinder exceeds 5 mt Kit Fittings Code Valve and Bypass code # of Non Non return Type and length of copper tube stations < 5 mt - 45 > 5 mt - 45 return Relief valve valve Manual between pump and cylinder valve Bypass Bypass IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x < 5 mt - 45 IT436 x 2 Qty. IT23503 IT5709 Copper tube d.e. 8 x,5 > 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x < 5 mt IT23452 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 > 5 mt - 45 IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x < 5 mt - 45 IT436 x 2 Qty. IT23503 IT5709 Copper tube d.e. 8 x,5 > 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x < 5 mt IT23452 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 > 5 mt

28 system 0 SINGLE-Station Steering System DOUBLE-Station Steering System Components Model Code Qty. Components Model Code Qty. Cylinder CTD450 IT5699 Cylinder CTD450 IT5699 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P89S or P05 IT4002 IT4003 Main station pump P89T or P05 IT4052 IT4052 IT4002 Second station pump / / / Second station pump P89S or P05 IT4052 IT4360 Pump fittings kit 2 Pump fittings kit See table on page bottom IT436** Suggested m hose Copper tube d.e.4 x size or Copper tube d.e.8 x,5 / Suggested m hose Copper tube d.e.4 x ** size or Copper tube d.e.8 x,5 ** / Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Fittings kit for autopilot Choose autopilot power unit model in the Order Guide on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-tolock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lockto-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P89T Cod. IT4003 (*) HELM PUMP P89S Cod. IT4002 (*) P05 Cod. IT4052 (*) CYLINDER CTD450 Cod. / Part #IT5699 No. of wheel turns: 4,2 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 260 / 0,24 Angle: Torque: 633 Kgm / lb. M wheel diam.: ,56 No. of wheel turns: 4,2 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 260 / 0,24 Angle: Torque: 633 Kgm / lb. M wheel diam.: ,56 No. of wheel turns: 2, Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 260 / 0,24 Angle: Torque: 633 Kgm / lb. M wheel diam.: ,37 (*) Max. rudder torque calculated at a working pressure of 70 bar/000 psi. See the specific heavy duty pumps section on page 4 for more information. (**) To be used when the hose length between pump and cylinder exceeds 5 mt Pump P89 # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Non return valve Valve and Bypass Code Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x < 5 mt - 45 IT436 x 2 Qty. IT23503 IT5709 Copper tube d.e. 8 x,5 > 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x < 5 mt IT23452 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 > 5 mt - 45 P05 Included IT23503 IT5709 Copper tube d.e. 8 x,5 Any length 2 IT2358 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 Any length Steering Effort Key LIGHT NORMAL HEAVY 26

29 system SINGLE-Station Steering System DOUBLE-Station Steering System Components Model Code Qty. Components Model Code Qty. Cylinder CTE600 IT5700 Cylinder CTE600 IT5700 Flexible hoses for cylinder Main station pump Included / 2 P89S P05 P5 P9 IT4002 IT4052 IT4082 IT4084 Flexible hoses for cylinder Main station pump Included / 2 P89T P05 P5 P9 IT4003 IT4052 IT4082 IT4084 Second station pump / / / Second station pump P89S P05 P5 P9 IT4002 IT4052 IT4082 IT4084 IT4360 Pump fittings kit 2 Pump fittings kit See table on page bottom IT436** Suggested m hose size Copper tube d.e.4 x or Copper tube d.e.8 x,5 ** / Suggested m hose size Copper tube d.e.4 x or Copper tube d.e.8 x,5 ** / Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Fittings kit for autopilot Choose autopilot power unit model in the Order Guide on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P89T Cod. IT4003 (*) P89S Cod. IT4002 (*) P05 Cod. IT4052 (*) HELM PUMP P5 Cod. IT4082 (*) P9 Cod. IT4084 (*) CYLINDER CTE600 Cod. / Part # IT5700 No. of wheel turns: 4,8 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 75 /6,89 Angle: Torque: 660 Kgm/57387 lb. M wheel diam.: ,56 No. of wheel turns: 2,6 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 75 / 6,89 Angle: Torque: 660 Kgm/ lb. M wheel diam.: ,37 No. of wheel turns: 8,7 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 75 / 6,89 Angle: Torque: 660 Kgm/ lb. M wheel diam.: ,37 No. of wheel turns: 6,9 Copper tube d.e. 4x or copper tube d.e. 8x,5 (**) Tiller: 75 / 6,89 Angle: Torque: 660 Kgm/ lb. M wheel diam.: ,37 (*) Max. rudder torque calculated at a working pressure of 70 bar/000 psi. See the specific heavy duty pumps section on page 4 for more information. (**) To be used when the hose length between pump and cylinder exceeds 5 mt Pump # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Valve and Bypass Code Non return valve Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder P89 P05 P5 P9 IT4360 x 2 Qty. IT2350 IT7672 Copper tube d.e. 4 x < 5 mt - 45 IT436 x 2 Qty. IT23503 IT5709 Copper tube d.e. 8 x,5 > 5 mt IT23493 IT2353 IT2350 IT234 Copper tube d.e. 4 x < 5 mt IT23452 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 > 5 mt - 45 Included IT23503 IT5709 Copper tube d.e. 8 x,5 Any length 2 IT2358 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 Any length 27

30 system 2 SINGLE-Station Steering System DOUBLE-Station Steering System Components Model Code Qty. Components Model Code Qty. Cylinder CTE900 IT570 Cylinder CTE900 IT570 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P05 P5 P9 IT4052 IT4082 IT4084 Main station pump P05 P5 P9 IT4052 IT4082 IT4084 Second station pump / / / Second station pump P05 P5 P9 IT4052 IT4082 IT4084 Pump fittings kit Included / / Pump fittings kit IT2358 Suggested m hose size Copper tube d.e.8 x,5 / Suggested m hose size Copper tube d.e.8 x,5 / Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model on pages Fittings kit for autopilot Choose autopilot power unit model on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-tolock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P05 Cod. IT4052 (*) HELM PUMP P5 Cod. IT4082 (*) P9 Cod. IT4084 (*) CYLINDER CTE900 Cod. / Part # IT570 No. of wheel turns: 8,8 Copper tube d.e. 8x,5 Tiller: 260 / 0,24 Angle: Torque: 989 Kgm / lb. M wheel diam.: ,73 No. of wheel turns: 3, Copper tube d.e. 8x,5 Tiller: 260 / 0,24 Angle: Torque: 989 Kgm / lb. M wheel diam.: ,73 No. of wheel turns: 0,4 Copper tube d.e. 8x,5 Tiller: 260 / 0,24 Angle: Torque: 989 Kgm / lb. M wheel diam.: ,73 (*) Max. rudder torque calculated at a working pressure of 70 bar/000 psi. See the specific heavy duty pumps section on page 4 for more information. Pump # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Non return valve Valve and Bypass Code Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder P05 P5 P9 Included IT23503 IT IT2358 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 Copper tube d.e. 8 x,5 Any length Any length Steering Effort Key LIGHT NORMAL HEAVY 28

31 system 3 SINGLE-Station Steering System DOUBLE-Station Steering System Components Model Code Qty. Components Model Code Qty. Cylinder CTE200 IT5702 Cylinder CTE200 IT5702 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P5 P9 IT4082 IT4084 Main station pump P5 P9 IT4082 IT4084 Second station pump / / / Second station pump P5 P9 IT4082 IT4084 Pump fittings kit Included / / Pump fittings kit IT2358 Suggested m hose size Copper tube d.e.8 x,5 / Suggested m hose size Copper tube d.e.8 x,5 / Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model on pages Fittings kit for autopilot Choose autopilot power unit model on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-tolock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. P5 Cod. IT4082 (*) HELM PUMP P9 Cod. IT4084 (*) CYLINDER CTE200 Cod. / Part # IT5702 No. of wheel turns: 7,5 Copper tube d.e. 8x,5 Tiller: 350 / 3,78 Angle: Torque: 38 Kgm / 460 lb. M wheel diam.: ,37 No. of wheel turns: 3,8 Copper tube d.e. 8x,5 Tiller: 350 / 3,78 Angle: Torque: 38 Kgm / 460 lb. M wheel diam.: ,37 (*) Max. rudder torque calculated at a working pressure of 70 bar/000 psi. See the specific heavy duty pumps section on page 4 for more information. Pump # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Non return valve Valve and Bypass Code Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder P5 P9 Included IT23503 IT5709 Copper tube d.e. 8 x,5 Any length 2 IT2358 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 Any length 29

32 system 4 SINGLE-Station Steering System DOUBLE-Station Steering System Components Model Code Qty. Components Model Code Qty. Cylinder CTF600 IT5703 Cylinder CTF600 IT5703 Flexible hoses for cylinder Included / 2 Flexible hoses for cylinder Included / 2 Main station pump P9 IT4084 Main station pump P9 IT4084 Second station pump / / / Second station pump P9 IT4084 Pump fittings kit Included / / Pump fittings kit IT2358 Suggested m hose size Copper tube d.e.8 x,5 / Suggested m hose size Copper tube d.e.8 x,5 / Hydraulic oil VG22 IT Hydraulic oil VG22 IT See on page bottom for bypass and valve selection according to pump type and tube length In case of autopilot installation please add: Autopilot power unit Choose autopilot power unit model in the Order Guide on pages Fittings kit for autopilot Choose autopilot power unit model in the Order Guide on pages Pump-Cylinder Combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort Note: by increasing the wheel diameter within the specified limitations, the requested effort is reduced. HELM PUMP P9 Cod. IT4084 (*) CYLINDER CTF600 Cod. / Part # IT5703 No. of wheel turns: 20,2 Copper tube d.e. 8x,5 Tiller: 350 / 3,78 Angle: Torque: 928 Kgm / lb. M wheel diam.: ,37 (*) Max. rudder torque calculated at a working pressure of 70 bar/000 psi. See the specific heavy duty pumps section on page 4 for more information. Pump # of stations Kit Fittings Code < 5 mt - 45 > 5 mt - 45 Non return valve Valve and Bypass Code Relief valve Non return valve Bypass Manual Bypass Type and length of copper tube between pump and cylinder P9 Included IT23503 IT IT2358 IT23503 IT5709 x 2 Qty. Copper tube d.e. 8 x,5 Copper tube d.e. 8 x,5 Any length Any length Steering Effort Key LIGHT NORMAL HEAVY 30

33 Inboard Steering Cylinders series Cta Features B C H F G Cylinder body in anodized aluminum Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 5 and 25cc Supplied with bleeders Meet ABYC standards E D A Q 35ϒ 35ϒ P M R N L S Technical Specifications DIMENSIONS Model Stroke A B C D E F G H L M N P Q R S CTA40U CTA65U CTA75U CTA80U , , in / , , / , , / , , / Model Code Stroke Rudder Torque CTA40U CTA65U CTA75U CTA80U IT5649 IT2677 IT5763 IT2682 TECHNICAL DETAILS Thrust at 70 bar psi Volume Tiller Angle Fittings Weight Kgm 455 Kgf 5.7 cc /4 NPT - 3/8 2,2 Kg 7.0 in 5008 in/lb 002 lbf 7. cu.in 6 O.D. 4,85 lb Kgm Kgf cc /4 NPT - 3/8 2,6 Kg 7.0 in 7257 in/lb 453 lbf 0.23 cu.in 6 O.D. 5,73 lb Kgm Kgf 88.4 cc /4 NPT - 3/8 3,0 Kg 7.78 in 855 in/lb 453 lbf.5 cu.in 6.9 O.D. 6,6 lb Kgm Kgf cc /4 NPT - 3/8 3,2 Kg 9.0 in 9297 in/lb 453 lbf 3. cu.in 7.8 O.D. 7,05 lb NOTE: The inboard cylinders mod. CTA are not suitable for installations on racing boats. The cylinders mod. CTA are provided with inch fittings. Version with metric fittings are also available. Please specify when placing the order. 3

34 Inboard Steering Cylinders series Ctb B C M Features F G Cylinder body in brass Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 28 and 360 cc Supplied with bleeders Meet ABYC standards E D H A S R P L T 35ϒ35ϒ D Q N U Technical Specifications DIMENSIONS Model Stroke A B C D E F G H L M N P Q R S , CTB0U / CTB30U , CTB45U / TECHNICAL DETAILS Model Code Stroke Rudder Torque Thrust at 70 bar psi Volume Tiller Angle Fittings Weight CTB0U CTB30U CTB45U IT2687 IT269 IT Kgm 08 Kgf cc 53 8,6 Kg /8 NPT - /2 O.D in/lb 2442 lbf 7.9 cu.in 6 8,95 lb Kgm 08 Kgf cc 80 8,8 Kg /8 NPT - /2 O.D in/lb 2442 lbf 9.7 cu.in 7 9,40 lb Kgm 08 Kgf cc 200 9,4 Kg /8 NPT - /2 O.D in/lb 2442 lbf 22 cu.in ,72 lb NOTE: The inboard cylinders mod. CTB are not suitable for installations on racing boats. The cylinders mod. CTB are provided with inch fittings. Version with metric fittings are also available. Please specify when placing the order. 32

35 inboard Heavy duty cylinders series Ctc Features B C G Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 500 and 000 cc Supplied with bleeders Meet ABYC standards E A H Q P M D F R 35ϒ 35ϒ N L S Technical Specifications DIMENSIONS Model Stroke A B C D E F G H L M N P Q R S CTC200 CTC , , CTC , CTC , Model Code Stroke Rudder Torque CTC200 CTC230 CTC300 CTC400 IT2695 IT2698 IT270 IT5697 Thrust at 70 bar psi TECHNICAL DETAILS Volume Tiller Angle Fittings Weight Kgm 750 Kgf 500 cc 75 3,2 Kg G/2 - d in/lb 3857 lbf 30.5 cu.in ,0 lb Kgm 750 Kgf 570 cc 200 5,3 Kg G/2 - d in/lb 3857 lbf cu.in ,73 lb Kgm 750 Kgf 750 cc 260 7,7 Kg G/2 - d in/lb 3857 lbf cu.in ,02 lb Kgm 750 Kgf 000 cc ,0 Kg G/2 - d in/lb 3857 lbf 6.02 cu.in , lb NOTE: The inboard cylinders mod CTC are not suitable for installations on racing boats. The cylinders mod CTC are provided with flexible hoses type SAE00 R. 33

36 inboard Heavy duty cylinders series Ctd B C Features E A G P F Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 844 and 266 cc Supplied with bleeders Meet ABYC standards N M Q D 35ϒ35ϒ L R H Technical Specifications DIMENSIONS Model Stroke A B C D E F G H L M N P Q R CTD30 CTD , , TECHNICAL DETAILS Model Code Stroke Rudder Torque Thrust at 70 bar psi Volume Tiller Angle Thread Weight CTD30 CTD450 IT5698 IT Kgm 2954 Kgf 844 cc Kg / in/lb 650 lbf 5,50 cu.in ,70 lb Kgm 2954 Kgf 266 cc ,6 Kg / in/lb 650 lbf 77,25 cu.in ,43 lb NOTE: The inboard cylinders mod CTD are not suitable for installations on racing boats. The cylinders mod CTD are provided with flexible hoses type SAE00 R. 34

37 inboard Heavy duty cylinders series Cte B C Features E A G P F Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 844 and 266 cc Supplied with bleeders Meet ABYC standards N Q M D 35ϒ 35ϒ L R H Technical Specifications DIMENSIONS Model Stroke A B C D E F G H L M N P Q R CTE600 CTE , , , CTE TECHNICAL DETAILS Model Code Stroke Rudder Torque Thrust at 70 bar psi Volume Tiller Angle Thread Weight CTE600 CTE900 CTE200 IT5700 IT570 IT Kgm 466 Kgf 38 cc 75 38,5 Kg / in/lb 073 lbf 2598 cu.in lb Kgm 466 Kgf 978 cc ,8 Kg / in/lb 073 lbf 3243 cu.in ,5 lb Kgm 466 Kgf 2637 cc ,0 Kg / in/lb 073 lbf 4323 cu.in ,6 lb NOTE: The inboard cylinders mod CTE are not suitable for installations on racing boats. The cylinders mod CTE are provided with flexible hoses type SAE00 R. 35

38 inboard Heavy duty cylinders series CtF B C Features F E D G A P M Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 844 and 266 cc Supplied with bleeders Meet ABYC standards 35ϒ 35ϒ Q N L H R Technical Specifications DIMENSIONS Model Stroke A B C D E F G H L M N P Q R CTF , TECHNICAL DETAILS Model Code Stroke Rudder Torque Thrust at 70 bar psi Volume Tiller Angle Thread Weight CTF600 IT Kgm 6750 Kgf 3857 cc ,8 Kg / in/lb 4850 lbf 235,27 cu.in 3,77 73,72 lb NOTE: The inboard cylinders mod CTF are not suitable for installations on racing boats. The cylinders mod CTF are provided with flexible hoses type SAE00 R. 36

39 MANUAL INBOARD STEERING SYSTEMS ORDER GUIDE Application guide according to boat length and type System to order Boat length LOA Planing Hull Displacement Hull Engine 2 Engines Engine 2 Engines Pleasure Working Pleasure Working Pleasure Working Pleasure Working Up to 8mt / 26ft ,8mt / 26-32ft ,8 -,6mt / 32-38ft ,6-3,4mt / 38-44ft ,4-5,3mt / 44-50ft ,5-6,8mt / 50-55ft ,8-8mt / 55-60ft ,8mt / 60-65ft / / 8 / ,8-2mt / 65-70ft / / 8 / ,8mt / 70-75ft / / 9 / ,8-24,3mt / 75-80ft / / 9 / 0 0 over 24,3 mt / 80ft For boat lengths over 24,3 mt / 80 ft please contact our technical department to check applications suggested on systems 2-4 WARNING! The above suggestions shall be intended as merely INDICATIVE. To check the proper application the required max torque must be calculated. If the required information is not available please contact our authorized dealer or service center and submit boat length, maximum speed and rudder dimensions. WARNING! For displacement boats, hull speed normally does not exceed 8 knots. For planing boats, the above steering systems are suggested for boat speeds under 30 knots. Mod. CYLINDER Code System to order CTA40U - CTA40 IT IT2675 System (see pg. 7) CTA65U - CTA65 CTA75U - CTA75 IT IT2676 IT IT2678 System 2 (see pg. 8) CTA80U - CTA80 IT IT2679 System 3 (see pg. 9) CTB0U - CTB0 CTB30U - CTB30 IT IT2683 IT269 - IT5606 System 4 (see pg. 20) CTB45U - CTB45 IT IT2692 System 5 (see pg. 2) CTC200 IT2695 System 6 (see pg. 22) CTC230 IT2698 System 7 (see pg. 23) CTC300 IT270 System 8 (see pg. 24) CTC400 CTD30 IT5697 IT5698 System 9 (see pg. 25) CTD450 IT5699 System 0 (see pg. 26) CTE600 IT5700 System (see pg. 27) CTE900 IT570 System 2 (see pg. 28) CTE200 IT5702 System 3 (see pg. 29) CTF600 IT5703 System 4 (see pg. 30) 37

40 autopilot power units The autopilot and other electronic navigation systems are more popular today on every type of vessel, even smaller ones. Since these modern technologies are more and more sophisticated it is necessary for the equipment to be able to exchange information and work together to guarantee safe navigation. Twin Disc has developed a complete range of autopilot power units that represent the best interface for your autopilot. Through thirty years of experience and research, we have learned the autopilot power unit range can provide simple solutions in terms of working principle and installation, while providing reliable and precise performance. It is possible to choose among several types of units: - solenoid - valve power units - solenoid - valve power units with automatic filling - REVERSIBLE power units Features Reduced dimensions Great variety of models for any kind of application Availability of reversible and solenoid-valve Power Units Steering automatic filling device available on certain models for an easier and faster bleeding Interface with any autopilot High quality materials and components for the best reliability and performance Each one of the types above is fully described in a dedicated section in this catalogue. Please check the different tables for the products characteristics and technical details. For the choice of the most suitable unit it is necessary to have the steering cylinder volume, from which the actuation time is calculated and the suitable model selected. 38

41 autopilot solenoid-valve power units with automatic filling device mod. c03rau - c04rau This is a special innovative version of the autopilot power unit with solenoid valves. This model has all the main features of the range which supply a safe and precise interface for the autopilot, but also is equipped with a special device that allows the automatic filling of the steering system. The installation and working principle of these units are exactly the same as traditional units, but this additional device circulates oil automatically in the steering hoses as soon as the unit is switched on, allowing any air remaining in the system to go out through the designed bleeders. In this way, the troublesome bleeding procedure becomes much easier and quicker (and nearly automatic) if the unit has not been used for some time. The steering wheel is turned occasionally from port to starboard and vice-versa. The unit composition and its main features are exactly the same as for the normal solenoid-valve power units described in the previous section. Features Available in two models for application with steering cylinders having a volume up to 500 cc Safe and precise interface with any autopilot Very compact design and reduced dimensions Supplied with solenoid-valves electro-magnetically actuated Special device for the steering automatic filling Easy and fast steering bleeding Technical Specifications and Applications DIMENSIONS Model A B C CO3RAU CO3RA 4,56 9 9,44 CO4RAU CO4RA 4,56 9 4,96 39

42 autopilot power units with solenoid-valves mod. c0nu - c03nu B A C Autopilot power units with solenoid valves include several models with different characteristics and displacements to satisfy a wide application field on any type of boat. The system s major components are an electric motor, a hydraulic pump, an oil tank and an electromagnetically actuated valve group. The unit dimensions allow installation in small, narrow areas, and the installation is very easy and fast. To select the most suitable model, first verify the steering cylinder volume and then select the suggested model on our Order Guide on pages For any special application, please contact a specialized installer or dealer for help in the product selection. Features Wide range of models with different displacements to satisfy any application Safe and precise interface with any autopilot Compact design Supplied with electro-magnetically actuated solenoid valves Technical specifications DIMENSIONS Model A B C CONU CON CO2NU CO2N CO2/3NU CO2/3N CO3NU CO3N ,30 7,28, ,30 7,28, ,28 7,28 4, ,28 7,28 4,7 40

43 autopilot power units with solenoid-valves mod. c04 - c04/5 B A C Technical Specifications DIMENSIONS Model A B C CO4 CO4/ , , , ,20 autopilot power units with solenoid-valves mod. c07 - c06 Technical specifications DIMENSIONS Model A B C A B C CO7 CO8 CO9 CO0 CO CO2 CO3 CO4 CO5 CO ,06 9,06 0, ,06 9,06 0, ,45 2,20 3, ,06 9,06 0, ,45 2,20 3, ,45 2,20 3, ,45 4,7 3, ,8 4,7 3, ,8 4,7 3, ,8 4,7 3,78 4

44 reversible autopilot power units mod. c0r - c04r Four different models of reversible power units are available for autopilot application with steering cylinders having a volume up to 500cc. They have the same performances as the solenoid-valve units, ensuring a precise and reliable interface with the autopilot software, but with a lower electrical consumption. These are suggested for all applications where the power consumption is critical, and must be as low as possible. The unit is composed basically of a reversible electric motor, a reversible hydraulic pump, an oil tank and a filter group. Their dimensions have been reduced, allowing installation in very narrow places. For the selection of the optimum system, please determine the steering cylinder volume and then choose the suggested model in our Order Guide on the following page. A Features B Available in four models for steering cylinder volumes up to 500 cc Precise and reliable interface with the autopilot Compact design and reduced dimensions Very low electric consumption C Technical Specifications and Applications DIMENSIONS Model A B C CORU - COR 60 / 6,30 55 / 6,0 285 /,22 CO2RU - CO2R 60 / 6,30 55 / 6,0 285 /,22 CO3RU - CO3R 85 / 7,28 55 / 6,0 360 / 4,7 CO4NRU - CO4NR 85 / 7,28 55 / 6,0 360 / 4,7 42

45 ORDER GUIDE AND TECHNICAL DETAILS Model Code Typical cylinder application Cylinder application Application time in sec. Displacement Setting pressure Max power consumption Therm protection Motor nominal power Tank capacity Weight* CORU 2V COR 2V CORU 24V COR 24V IT2305 IT259 IT2306 IT cc cu.in / depending on the cylinder volume 360 cc/min 2.97 cu.in 50 bar 7 A 0 A 725 psi 4.5 A 0 A 80 W 0.55 lt 6.5 Kg 33,56 cu 4,33 lb CO2RU 2V CO2R 2V CO2RU 24V CO2R 24V IT2307 IT2535 IT2308 IT cc cu.in CTA40U - CTA40 4,5 480 cc/min cu.in 50 bar 8,5 A 0 A 725 psi 4,5 A 0 A 80 W 0.55 lt 6.5 Kg 33,56 cu 4,33 lb CO3RU 2V CO3R 2V CO3RU 24V CO3R 24V IT2309 IT570 IT230 IT cc cu.in CTA40U - CTA40 CTA75U - CTA75 CTA80U - CTA80 CTB0U - CTB0 CTB30U - CTB30 CTB45U - CTB45 0,5,7 3,4 7,6 20,8 22,5 960 cc/min cu.in 50 bar 0 A 6 A 725 psi 7 A 0 A 25 W 0.95 lt 8.5 Kg 33,56 cu 8,73 lb CO4NRU 2V CO4NR 2V CO4NRU 24V CO4NR 24V IT23 IT57 IT232 IT cc ,5 cu.in CTC200 CT230 5,6 7,8 920 cc/min 7.2 cu.in 50 bar 22 A 25 A 725 psi A 6 A 50 W 0.95 lt 8.5 Kg 33,56 cu 8,73 lb CO3RAU 2V CO3RA 2V CO3RAU 24V CO3RA 24V IT23338 IT8044 IT2552 IT cc 7,93-2,96 cu. Cta65u Cta65 cta75u cta75 cta80u cta80 ctb0u ctb0 2,2 3,8 5,8 20,7 86 cc/m 49,77 cu. 50 bar A 6 A 725 psi 6 A 0 A 25 W 7 lt 427 cu 0 Kg- 20,04 lb 0,5 Kg- 23,4 lb CO4RAU 2V CO4RAU 2V CO4RA 24V IT23339 IT2569 IT cc 2,96-30,5 cu. CTB30U CTB30 CTB45U CTB45 CTC200 CTC300 0,2 5,4 23,2 940 cc/m 8,34 cu.in 50 bar 26 A 32 A 725 psi 3 A 6 A 50 W 2 lt 732 cu 5 Kg- 33,06 lb 5,5 Kg- 34,6 lb (*) Weight is intended without oil. 43

46 ORDER GUIDE AND TECHNICAL DETAILS Model CONU 2V CON 2V CONU 24V CON 24V CO2NU 2V CO2N 2V CO2NU 24V CO2NU 24V CO2/3NU 2V CO2/3N 2V CO2/3NU 24V CO2/3N 24V 44 CO3NU 2V CO3N 2V CO3NU 24V CO3N 24V CO4 2V CO4 24V CO4/5 2V CO4/5 24V CO7 24V CO8 24V CO9 24V CO0 24V CO 24V CO2 24V CO3 24V CO4 24V CO5 24V CO6 24V Code IT233 IT257 IT234 IT258 IT235 IT2532 IT236 IT2533 IT237 IT252 IT238 IT2522 IT239 IT534 IT2320 IT2549 IT2559 IT342 IT2555 IT2556 IT258 IT2582 IT2584 IT2497 IT2499 IT2500 IT2502 IT2503 IT2504 IT2507 Typical cylinder application cc cu.in 5-30 cc cu.in cc cu.in cc cu.in cc cu.in Cylinder application / CTA40U CTA40 CTA65U CTA65 CTA75U CTA75 CTA80U CTA80 CTB0U CTB0 CTB30U CTB30 CTB45U CTB45 CTC200 CTC cc CTC200 CTC CTC300 cu.in cc cu.in cc cu.in cc cu.in cc cu.in cc 73,28-76,27 cu.in cc 76,27-82,38 cu cc 82,38-06,79 cu cc 76,27-84,38 cu cc 06,79-22 cu cc cu.in (*) Weight is intended without oil. Application time in sec. depending on the cylinder volume 4,5 4 5,6 7,9 3,8 5,8 7, ,3 4 8,4 CTC300 2 CTC300 5,7 CTC400 ctd30 CTC400 ctd30 6, ,9 ctd450 6,3 cte600 4,6 cte600 cte600 2,5 cte900 3 cte200 ctf600 3,3 9,5 Displacement Setting pressure Max power consumption Therm protection 360 cc/min 50 bar 7 A 0 A 2.97 cu.in/ min 725 psi 4.5 A 0 A 480 cc/min 50 bar 9.4 A 0 A cu.in/ min 725 psi 6 A 0 A 720 cc/min 50 bar 6 A 20 A cu.in/ min 725 psi 0 A 6 A 220 cc/min 50 bar 8 A 20 A cu.in/ min 725 psi 2 A 6 A Motor nominal power 60 W 60 W 00 W 00 W Tank capacity Weight* 0,55 lt 6.5 Kg 33,56 cu 4.33 lb 0,55 lt 6.5 Kg 33,56 cu 4.33 lb 0,95 lt 8.5 Kg 57,97 cu 8.73 lb 0,95 lt 8.5 Kg 57,97 cu 8.73 lb 860 cc/min 45 bar 8 A 20 A 3,0 lt 4 Kg 50 W 3.55 cu.in/ min 652 psi 0 A 6 A 83cu lb 2440 cc/min 45 bar 20 A 25 A 3,0 lt 4 Kg 50 W cu.in/ min 652 psi 2 A 6 A 83cu lb 200 cc/min 55 bar / / 2,0 lt 25 Kg 300 W cu.in/ min 797 psi 8 A 20 A 732cu 55. lb 2850 cc/min 55 bar / / 2,0 lt 25 Kg 300 W cu.in/ min 797 psi 2 A 25 A 732cu 55. lb 3600 cc/min 55 bar / / cu.in/ min 797 psi 2 A 25 A 550 W 25,0 lt 40 Kg 525 cu 88.8 lb 4650 cc/min 55 bar / / 2,0 lt 40 Kg 300 W cu.in/ min 797 psi 30 A 32 A 732cu 88.8 lb 4650 cc/min 55 bar / / cu.in/ min 797 psi 35 A 40 A 5400 cc/min 55 bar / / cu.in/ min 797 psi 35 A 40 A 7200 cc/min 55 bar / / cu.in/ min 797 psi 40 A 50 A 6300 cc/min 55 bar / / cu.in/ min 797 psi 55 A 63 A 950 cc/min 55 bar / / cu.in/ min 797 psi 55 A 63 A 850 cc/min 55 bar / / cu.in/ min 797 psi 65 A 80 A 550 W 550 W 550 W 00 W 00 W 00 W 25,0 lt 40 Kg 525 cu 88.8 lb 25,0 lt 40 Kg 525 cu 88,8 lb 32,0 lt 43 Kg 952 cu 94,80 lb 32,0 lt 43 Kg 952 cu 94,80 lb 32,0 lt 43 Kg 952 cu 94,80 lb 32,0 lt 43 Kg 952 cu 94,80 lb

47 POWER-ASSISTED INBOARD STEERING SYSTEMS The Twin Disc Power Assisted Steering system is the combination of innovation, reliability and comfort. The system provides prompt responsivity and total control with just 3.5 wheel turns lock-to-lock, even at high speeds (over 28 Knots). The compact design and reduced number of components (3 vs 6-7 in other brands) allows the system to be easy to install and service. Twin Disc power-assisted steering assures maximum comfort, minimum effort, total efficiency in any sea condition. The System The hydraulic helm pump is available in all displacements and mounting configurations (see help pump on page 9 for the model selection). Simple design with reduced dimensions for the steering cylinder, which are available either in anodized aluminum body (for applications up to 45 ), or in a brass body for heavier applications, has the servo cylinder mounted directly to the main cylinder. The Twin Disc power-assisted steering is completely independent from the vessel s main engines and all necessary power is provided by a single electrohydraulic power unit. The system has all the necessary valves for the servo system in order to ensure safe steering (non-return valves, relief valves, etc.). It also includes an interface for the autopilot and a special device for the system automatic filling. In order to ensure safety and total boat control in emergency conditions, the Twin Disc steering system automatically turns into a manual system if there is any problem with the unit. Features Totally independent from the vessel propulsion system Effortless navigation comfort in any condition High quality, safety and reliability Innovative concept and working principle 3 elements of the basic system vs. 6-7 elements in other brands Strong reduction of installation time (over 30% in comparison with competitors steering) Prompt responsiveness and total control in just 3.5 turns lock-to-lock (this number can be varied) Cooling system is not necessary Supplied with interface for the autopilot Special device for automatic filling of the system Bleeding procedure easy and fast Steering helm pump available in 5 displacements and 4 mounting configurations Provided with automatic manual back-up steering Simplified service and repair procedures (the system is not pressurized) Limited number of spare parts Helm pumps and cylinders meet ABYC standards and are approved Helm pumps are NMMA Type Approved 45

48 WORKING PRINCIPLE The power-assisted steering is totally independent; the electro-hydraulic power unit provides all the necessary power. The steering system consists of an axial piston helm pump and a power assisted cylinder, which has the servo cylinder mounted on its body.. By turning the steering wheel, an oil flow is sent from the helm pump to the small servo cylinder mounted on the main one. 2. This flow enters the cylinder and makes the piston move. The pressure resulting from this movement is used to open a distributor placed on the electro-hydraulic power unit. 5. To rotate the rudder in the opposite direction, simply turn the helm pump the other way. In case of electrical failure (i.e. the power unit cannot be turned on or is out of order), by turning the helm pump oil flows automatically into the main cylinder which then allows the rudder to rotate. The power-assisted steering automatically becomes a manual hydraulic back-up system with no need for switching anything or open/close any bypass. 3. As the distributor opens, an oil flow reaches the main cylinder moving the piston as well as the rod connected to the tiller arm. This causes the rudder to rotate. 4. Oil displaced from the opposite side of the main cylinder flows back to the helm pump. CYLINDERS The power-assisted steering cylinders are available with anodized aluminum body (for applications up to 45 ), or with a brass body (for applications over 45 ). The small servo cylinder is mounted directly to the main cylinder. This results in an extremely simple design with reduced dimensions for an easy installation in very narrow spaces. The piston rod is made of stainless steel for both the servo and main cylinders allowing longer life and higher resistance to rust and corrosion. The standard dimensions of ball joints can be easily ordered and can be supplied in stainless steel upon request. The cylinder base can be adjusted either horizontally, to follow the complete arc of the cylinder, or vertically, in order to adapt to any tiller extension. Every cylinder is supplied with Tee fittings with bleeders as well as the necessary fittings for hose connection. All cylinders are built with materials suitable for application in the marine environment, where there is a high level of salinity. Main Features Compact design with reduced dimensions Servo cylinder integrally fixed to the main one Available in a wide variety of volumes and strokes for application flexibility Provided with bleeders Available with anodized aluminum or bronze body Piston rod in stainless steel Cylinder base twisting either horizontally or vertically High resistance to corrosion Meet ABYC standards marked In case of particularly difficult environmental conditions, stainless steel ball joints and fittings are recoended. 46

49 power-assisted inboard steering cylinders series cta_au B C D L F G D H M A Power-assisted steering cylinders are available either with an anodized aluminum body (for applications up to 45 ), or with a brass body, for applications over 45. The small servo-cylinder is mounted directly to the main cylinder. This results in an extremely simple design with reduced dimensions for easy installation in very narrow spaces. T E 35ϒ 35ϒ S Q N R P U The piston rod is made of stainless steel in both servo and main cylinders for longer life and a higher resistance to rust and corrosion. Ball joints are available in the most popular sizes for the market and can be supplied in stainless steel upon request. The cylinder base can adjust either horizontally, to follow the complete arc of the cylinder, or vertically, in order to adapt to any tiller extension. Every cylinder is supplied with Tee fittings with bleeders as well as the necessary fittings for hose connection. All cylinders are built with materials suitable for application in marine environment, even high salt conditions. In case of difficult environment conditions, it is suggested to request the stainless steel versions of ball joint and fittings. Main Features Cylinder body in anodized aluminum Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Supplied with bleeders Meets ABYC standards Technical specifications DIMENSIONS Model Stroke A B C D D E F G H L M N P Q R S T U CTA80AU CTA80A 228 9, ,7 22,77 6, ,79 4 9,05 0,55 3/ ,57 5, 3, ,77 4, ,36 4, ,57 4,3 8, , ,5 TECHNICAL DETAILS Model Code Stroke Rudder Torque Thrust at 70 bar psi Volume Tiller Angle Fittings Weight CTA80AU CTA80A IT268 IT Kgm 659,4 Kgf cc 200 5,5 Kg /4 NPT - 3/8 O.D. 9.0 in 9297 in/lb 453 lbf 3. cu.in 7,8 2,3 lb NOTE: The power-assisted inboard steering cylinders type CTA_A are not suitable for installations on racing boats. 47

50 power-assisted inboard steering cylinders series ctb_au Features B C M Cylinder body in brass Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 280 cc and 360 cc Supplied with bleeders Meets ABYC standards E D H A S F G R P L T 35ϒ35ϒ D Q N U Technical Specifications DIMENSIONS Model Stroke A B C D D E F G H L M N P Q R S T U CTB0AU CTB0A ,22 20, , / ,0 CTB30AU CTB30A , , , ,78 CTB45AU CTB45A , , / ,5 TECHNICAL DETAILS Model Code Stroke Rudder Torque Thrust at 70 bar psi Volume Tiller Angle Fittings Weight CTB0AU CTB0A CTB30AU CTB30A CTB45AU CTB45A IT2686 IT2684 IT2690 IT2688 IT5883 IT Kgm 08 Kgf 28,77 cc /4 NPT - 3/8 O.D.,9 Kg in/lb 2442 lbf 7.9 cu.in ,2 lb 204 6,42 Kgm 08 Kgf 322,93 cc /4 NPT - 3/8 O.D. 2,3 Kg in/lb 2442 lbf 9,7 cu.in ,2 lb Kgm 08 Kgf 360,92 cc /4 NPT - 3/8 O.D. 3, Kg in/lb 2442 lbf 22,0 cu.in ,85 lb NOTE: The power-assisted inboard steering cylinders type CTB_A are not suitable for installations on racing boats. 48

51 POWER-assisted inboard steering cylinders series ctc_au Features Piston rod in stainless steel for a high corrosion resistance Adjustable base either horizontally or vertically Available in a range of volumes between 500 cc and 000 cc Supplied with bleeders Meets ABYC standards E D B H A S C F G L M R P T 35ϒ35ϒ D Q N U Technical Specifications TECHNICAL DETAILS Thrust at 70 bar psi Volume Tiller Angle Fittings Weight ,93 Kgm 750 Kgf 500,0 cc 75 6,8 Kg 35 /4 NPTF - 3/8 D.E. for Servo-control cylinder +35 /4 NPTF - /2 D.E. for main cylinder 7, in/lb 3857 lbf 30.5 cu.in 6.9 G/4 - hose d. 0 e T - G/2 - hose d.0 37, lb Model Code Stroke Rudder Torque CTC200AU CTC200A CTC230AU CTC230A CTC300AU CTC300A IT5885 IT2696 IT5887 IT2699 IT5889 IT575 DIMENSIONS Model Stroke A B C D D E F G H L M N P Q R S T U CTC200AU , CTC200A ,0 0,55 0,98 2,7 5,22 5,6 2,56 6,38 3,94 5,5 2,83 4,4 0,43 6,89 5,6 CTC230AU , CTC230A ,0 0,55 0,98 2,7 5,22 6,26 2,56 6,38 3,94 5,5 2,83 4,4 0,43 7,87 6,5 CTC300AU , CTC300A, ,0 0,55 0,98 2,7 5,22 9,09 2,56 6,38 3,94 5,5 2,83 4,4 0,43 0,24 8,5 CTC400AU CTC400A , ,0 0,55 0,98 2,7 5,22 23, ,92 Kgm 750 Kgf 570,0 cc 200 9,2 Kg 35 /4 NPTF - 3/8 D.E. for Servo-control cylinder +35 /4 NPTF - /2 D.E. for main cylinder in/lb 3857 lbf 34,78 cu.in 7.87 G/4 - hose d. 0 e T - G/2 - hose d.0 42,3 lb Kgm 750 Kgf 750,0 cc 260 2,8 Kg 35 /4 NPTF - 3/8 D.E. for Servo-control cylinder +35 /4 NPTF - /2 D.E. for main cylinder in/lb 3857 lbf cu.in 0.2 G/4 - hose d. 0 e T - G/2 - hose d.0 48, lb. 2,56 6,38 3,94 5,5 2,83 4,4 0,43 3,78,3 CTC400AU CTC400A IT636 IT Kgm 750 Kgf 000,0 cc /4 NPTF - 3/8 D.E. for Servo-control cylinder 26,8 Kg +35 /4 NPTF - /2 D.E. for main cylinder in/lb 3857 lbf 6,02 cu.in 3.7 G/4 - hose d. 0 e T - G/2 - hose d.0 59 lb NOTE: The cylinders type CTC_A are not suitable for installations on racing boats. 49

52 Power-assisted electro-hydraulic power unit mod. c0500 B D C A E F Technical Specifications DIMENSIONS Model A B C D E F C0500/3/0,5U C0500/3/0,5 C0500/4/0,75U C0500/4/0,75 C0500/6/0,75U C0500/6/0, ,8 3,74 3,74 5,24 9, ,8 3,74 3,74 5,24 9, ,2,8 3,74 3,74 5,24 9,88 APPLICATION AND TECHNICAL DETAILS Model C0500/3/0,5U 2V C0500/3/0,5 2V C0500/3/0,5U 24V C0500/3/0,5 24V C0500/4/0,75U 24V C0500/4/0,75 24V C0500/6/0,75U 24V C0500/6/0,75 24V Code IT632 IT257 IT2572 IT5654 IT633 IT2573 IT634 IT2574 Cylinder application CTA80AU CTA80A CTB0AU CTB0A CTB30AU CTB30A CTB45AU CTB45A CTC200AU CTC200A CTC230AU CTC230A CTC300AU CTC300A CTC400AU CTC400A Delivery in Servocontrol system 3300 cc/min 20,5 cu.in/min 3900 cc/min 238,0 cu.in/min 6450 cc/min 394,0 cu.in/min Delivery with autopilot 675 cc/min 4,2 cu.in/min 855 cc/min 52,2 cu.in/min 260 cc/min 77,0 cu.in/min Setting pressure Max. power consumption Thermal protection Motor nominal power Tank capacity Weight* 70 bar 43 A 50 A 600 W 2 lt 40 Kg 05 psi 23 A 25 A 500 W 732 cu.in 88 lb 70 bar 2 lt 40 Kg 27 A 32 A 500 W 05 psi 732 cu.in 88 lb 70 bar 2 lt 40 Kg 4 A 40 A 800 W 05 psi 732 cu.in 88 lb (*) Weight is intended without oil. 50

53 Power-assisted steering system applications according to the boat length Boat Length LOA Planing Hull System to Order Semi Displacement Hull Pleasure Working 2-3,7 mt / ft ,7-5,3 mt / ft ,3-6,8 mt / ft 7 6,8-8 mt / ft ,8 mt / ft 9 2 9,8-2 mt / ft / 2-22,9 mt / ft 2 22 / 22,9-24,4 mt / ft 22 / / 24,3-26 mt / ft 22 / / WARNING! The above suggestions shall be intended as indicative. To check the proper application the required max torque must be calculated. If the required information is not available please contact our authorized dealer or service center and submit boat length, maximum speed and rudder dimensions. For planing boats, the above steering systems are suggested for boat speeds between 30 and 45 knots and for semi displacement boat with hull speed between 5 and 20 knots. Power-Assisted Steering System System to Order Cylinder Code Pump Wheel Turns Lock-to-Lock (MANUAL) Wheel Turns Lock-to-Lock (Servo-Assisted) Power Unit Code Hydraulic Scheme Main Station Second station System 5 System 6 CTA80AU CTA80A CTB0AU CTB0A IT268 IT2680 IT2686 IT cc/rev CO500/3/0,5U SI-600/B SI-60/B 30 cc/rev Vdc CO500/3/0,5 2Vdc IT632 IT257 SI-60/B SI-6/B System 7 CTB30AU CTB30A IT2690 IT cc/rev CO500/3/0,5U 24Vdc IT2572 SI-602/B SI-62/B CO500/3/0,5 IT cc/rev Vdc SI-602/C SI-62/C System 8 CTB45AU CTB45A IT5883 IT cc/rev CO500/4/0,75U SI-603/B SI-63/B 24Vdc IT633 CO500/4/0,75 24Vdc IT cc/rev SI-603/C SI-63/C System 9 CTC200AU CTC200A IT5885 IT cc/rev SI-604/B SI-64/B 42 cc/rev.9 3 SI-604/C SI-64/C System 20 CTC230AU CTC230A IT5887 IT cc/rev CO500/6/0,75U 24Vdc IT634 SI-605/B SI-65/B 42 cc/rev C0500/6/0,75 24/vdc IT2574 SI-605/C SI-65C System 2 CTC300AU CTC300A IT5889 IT cc/rev SI-606/A SI-66/A System 22 CTC400AU CTC400A IT636 IT cc/rev SI-606/C SI-66/C 5

54 system 5 system 6 Components Model Code Qty. Components Model Code Qty. Cylinder CTA80AU CTA80A IT268 IT2680 Cylinder CTB0AU CTB0A IT2686 IT2684 Helm pump P20BAP P20BA IT273 IT692 Helm pump P30BAP P30BA IT274 IT693 Fittings for single station IT2784 IT Fittings for single station IT2784 IT Electrohydraulic power unit CO500/3/0,5U 2 Vdc CO500/3/0,5U 24 Vdc CO500/3/0,5 2 Vdc CO500/3/0,5 24 Vdc IT632 IT257 IT2572 IT5654 Electrohydraulic power unit CO500/3/0,5U 2 Vdc CO500/3/0,5 24 Vdc CO500/3/0,5U 24 Vdc CO500/3/0,5 24 Vdc IT632 IT257 IT2572 IT5654 Hydraulic oil VG22 IT Hydraulic oil VG22 IT In case of a second station please add: In case of a second station please add: 2 station helm pump P20BAP P20BA IT273 IT692 2 station helm pump P30BAP P30BA IT274 IT693 Fittings kit for additional station IT23376 IT23942 Fittings kit for additional station IT23376 IT23942 Hydraulic oil VG22 IT2334 Hydraulic oil VG22 IT2334 pump-cylinder combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort (*) P20BAP Cod. IT273 P20BA Cod. IT692 HELM PUMP (*) P30BAP Cod. IT274 P30BA Cod. IT693 (*) P42BAP Cod. IT275 P42BA Cod. IT694 CTA80AU - Cod. / Part # 268 CTA80A - Cod. / Part # 2680 # of wheel turns Manual: 0,7 Servo-control system: 4,0 Suggested min hose (**) Tiller: 200 / 7.8 Angle: Torque: 07,36 Kgm / 92,97 lb. M wheel diam.: 350-3,77 CTB0AU - Cod. / Part # 2686 CTB0A - Cod. / Part # 2684 # of wheel turns Manual: 9,4 Servo-control system: 3,8 Suggested min hose (**) Tiller: 53 / 6.0 Angle: Torque: Kgm / 2,97 lb. M wheel diam.: 350-3,77 No. of wheel turns: 20,2 Copper tube d.e. 8x,5 Tiller: 350 / 3,78 Angle: Torque: 928 Kgm / lb. M wheel diam.: ,37 (*) For more details, see the basic helm section starting on page 9 to choose the desired mounting configuration. (**) For the choice of the hydraulic hose, please see the relative scheme. 52

55 system 7 system 8 Components Model Code Qty. Components Model Code Qty. Cylinder CTB30AU CTB30A IT2690 IT2688 Cylinder CTB45AU CTB45A IT5883 IT2693 Helm pump P30BAP P30BA P42BAP P42BA IT274 IT693 IT275 IT694 Helm pump P30BAP P30BA P42BAP P42BAP IT274 IT693 IT275 IT694 Fittings for single station IT2784 IT Fittings for single station IT2784 IT Electrohydraulic power unit CO500/3/0,5U 2 Vdc CO500/3/0,5 2 Vdc CO500/3/0,5U 24 Vdc CO500/3/0,5 24 Vdc IT632 IT2572 Electrohydraulic power unit CO500/4/0,75U 24 Vdc CO500/4/0,75 24 Vdc IT633 IT2573 Hydraulic oil VG22 IT Hydraulic oil VG22 IT In case of a second station please add: In case of a second station please add: 2 station helm pump P30BAP P30BA P42BAP P42BA IT274 IT693 IT275 IT694 2 station helm pump P30BAP P30BA P42BAP P42BA IT274 IT693 IT275 IT694 Fittings kit for additional station IT23376 IT23942 Fittings kit for additional station IT23376 IT23942 Hydraulic oil VG22 IT2334 Hydraulic oil VG22 IT2334 pump-cylinder combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort (*) P20BAP Cod. IT273 P20BA Cod. IT692 HELM PUMP (*) P30BAP Cod. IT274 P30BA Cod. IT693 (*) P42BAP Cod. IT275 P42BA Cod. IT694 CTB30AU - Cod. / Part # 2690 CTB30A - Cod. / Part # 2688 # of wheel turns Manual: 0,7 Servo-control system: 4,4 Suggested min hose (**) Tiller: 80 / 7.0 Angle: Torque: 6,42 Kgm / 3978 lb. M wheel diam.: 350-3,77 # of wheel turns Manual: 7,7 Servo-control system: 3,2 Suggested min hose (**) Tiller: 80 / 7.0 Angle: Torque: 6,42 Kgm / 3978 lb. M wheel diam.: 450-7,7 CTB45AU - Cod. / Part # 5883 CTB45A - Cod. / Part # 2693 # of wheel turns Manual: 2 Servo-control system: 4,9 Suggested min hose (**) Tiller: 200 / 7.8 Angle: Torque: 80,4 Kgm / 5623 lb. M wheel diam.: 350-3,77 # of wheel turns Manual: 8,6 Servo-control system: 3,5 Suggested min hose (**) Tiller: 200 / 7.8 Angle: Torque: 80,4 Kgm / 5623 lb. M wheel diam.: 450-7,7 (*) For more details, see the basic helm section starting on page 9 to choose the desired mounting configuration. (**) For the choice of the hydraulic hose, please see the relative scheme. 53

56 system 9 system 20 Components Model Code Qty. Components Model Code Qty. Cylinder CTC200AU CTC200A IT5885 IT2696 Cylinder CTC230AU CTC230A IT5887 IT2699 Helm pump P30BAP P30BA P42BAP P42BA IT274 IT693 IT275 IT694 Helm pump P30BAP P30BA P42BAP P42BA IT274 IT693 IT275 IT694 Fittings for single station IT2784 IT Fittings for single station IT2784 IT Electrohydraulic power unit CO500/6/0,75U 24 Vdc CO500/6/0,75 24 Vdc IT634 IT2574 Electrohydraulic power unit CO500/6/0,75U 24 Vdc CO500/6/0,75 24 Vdc IT634 IT2574 Hydraulic oil VG22 IT Hydraulic oil VG22 IT In case of a second station please add: In case of a second station please add: 2 station helm pump P30BAP P30BA P42BAP P42BA IT274 IT275 2 station helm pump P30BAP P30BA P42BAP P42BA IT274 IT693 IT275 IT694 Fittings kit for additional station IT23376 IT23942 Fittings kit for additional station IT23376 IT23942 Hydraulic oil VG22 IT2334 Hydraulic oil VG22 IT2334 pump-cylinder combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort (*) P20BAP Cod. IT273 P20BA Cod. IT692 HELM PUMP (*) P30BAP Cod. IT274 P30BA Cod. IT693 (*) P42BAP Cod. IT275 P42BA Cod. IT694 CTC200AU - Cod. / Part # 5885 CTC200A - Cod. / Part # 2696 # of wheel turns Manual: 6,6 Servo-control system: 4,3 Suggested min hose (**) Tiller: 75 / 6.9 Angle: Torque: 249,93 Kgm / 2643 lb. M wheel diam.: 350-3,77 # of wheel turns Manual:,9 Servo-control system: 3, Suggested min hose (**) Tiller: 75 / 6.9 Angle: Torque: 249,93 Kgm / 2643 lb. M wheel diam.: 450-7,7 CTC230AU - Cod. / Part # 5887 CTC230A - Cod. / Part # 2699 # of wheel turns Manual: 2 Servo-control system: 4,9 Suggested min hose (**) Tiller: 200 / 7.8 Angle: Torque: 80,4 Kgm / 5623 lb. M wheel diam.: 350-3,77 # of wheel turns Manual: 3,6 Servo-control system: 3,5 Suggested min hose (**) Tiller: 200 / 7.8 Angle: Torque: 284,92 Kgm / lb. M wheel diam.: 450-7,7 (*) For more details, see the basic helm section starting on page 9 to choose the desired mounting configuration. (**) For the choice of the hydraulic hose, please see the relative scheme. 54

57 system 2 system 22 Components Model Code Qty. Components Model Code Qty. Cylinder CTC300AU CTC300A IT5889 IT575 Cylinder CTC400AU CTC400A IT636 IT2702 Helm pump P42BAP P42BA IT275 IT694 Helm pump P42BAP P42BA IT275 IT694 Fittings for single station IT2784 IT Fittings for single station IT2784 IT Electrohydraulic power unit CO500/6/0,75U 24 Vdc CO500/6/0,75 24 Vdc IT634 IT2574 Electrohydraulic power unit CO500/6/0,75U 24 Vdc CO500/6/0,75 24 Vdc IT634 IT2574 Hydraulic oil VG22 IT Hydraulic oil VG22 IT In case of a second station please add: In case of a second station please add: 2 station helm pump P42BAP P42BA IT275 IT694 2 station helm pump P42BAP P42BA IT275 IT694 Fittings kit for additional station IT23944 IT23943 Fittings kit for additional station IT23944 IT23943 Hydraulic oil VG22 IT2334 Hydraulic oil VG22 IT2334 pump-cylinder combination Choose combination between pump and cylinder according to the desired number of wheel turns lock-to-lock. Note: the requested effort on the steering wheel is inversely proportional to the wheel turns number lock-to-lock: less wheel turns, more effort more wheel turns, less effort (*) P20BAP Cod. IT273 P20BA Cod. IT692 HELM PUMP (*) P30BAP Cod. IT274 P30BA Cod. IT693 (*) P42BAP Cod. IT275 P42BA Cod. IT694 CTC300AU - Cod. / Part # 5889 CTC300A - Cod. / Part # 575 # of wheel turns Manual: 7,8 Servo-control system: 4,6 Suggested min hose (**) Tiller: 260 / 0,2 Angle: Torque: 374,89 Kgm / lb. M wheel diam.: 450-7,7 CTC400AU - Cod. / Part # 636 CTC400A - Cod. / Part # 2702 # of wheel turns Manual: 24,0 Servo-control system: 6, Suggested min hose (**) Tiller: 350 / 3,7 Angle: Torque: 499,85 Kgm / lb. M wheel diam.: 450-7,7 (*) For more details, see the basic helm section starting on page 9 to choose the desired mounting configuration. (**) For the choice of the hydraulic hose, please see the relative scheme. 55

58 POWER-ASSISTED STEERING SYSTEM: BIG RANGE Twin Disc has a dedicated combination of products for pleasure boats, mega yachts and work boats. Hydraulic Steering System from MT30 to MT800 This type of servo system is using one or two main cylinders for generating the mechanical power for tacking and a dedicated cylinder for the power assistance for tacking management. This servo system is electrically operated and in case of electric failure, the system converts itself into a manual steering. The hydraulic power units are available with one or two electric motors, both in direct current at 24 VDC and three-phase (different voltages on request). A dedicated solenoid valve for the autopilot interface is included on the electro-hydraulic power unit. The working principle of the system is simple: As the steering wheel is turned, oil is sent from the helm pump to the servo cylinder. The cylinder makes a signal of pressure that is used to open a hydraulic distributor placed on the electro-hydraulic power unit. As the distributor opens, oil reaches the main cylinder moving the piston as well as the rod connected to the tiller arm. This causes the rudder to rotate. POWER-ASSISTED ELECTROHYDRAULIC POWER UNITS APPLICATIONS AND TECHNICAL SPECIFICATIONS Model Code Main Cylinder Application Servo Cylinder Application Delivery in servo-control system Delivery with autopilot Setting Pressure Max Power cons. Motor nominal power Tank capacity CO3APR-380 IT20595 CTD450 CTE600 CTC300A 6.9 l/min 6.9 l/min 63 bar 3.8 A 500 W 32 l CO5AR-380 IT x CTD30 CTC300A 8 l/min 8 l/min 55 bar 3.8 A 500 W 32 l CO5D-380 IT8775 CTD30 CTC230A 5.2 l/min 5.2 l/min 63 bar CO5E-380 IT x CTD30 CTC300A 8 l/min 8 l/min 63 bar 2 x 3.8 A 2 x 3.8 A 2 x 500 W 50 l 2 x 500 W 50 l CO5G-380 IT2628 CTD450 CTE600 CTC300A 6.9 l/min 6.9 l/min 63 bar 2 x 3.8 A 2 x 500 W 50 l CO5M-380 IT x CTE900 CTC400A 5 l/min 5 l/min 70 bar 2 x 4.5 A 2 x 500 W 75 l CO5Q-380 IT386 2 x CTD450 2x CTE600 CTE900 CTE200 CTC300A 0.3 l/min 0.3 l/min 63 bar 2 x 3.8 A 2 x 500 W 50 l 56

59 STEERING SYSTEMS FOR CATAMARANS Hydraulic Steering System for Catamarans Based on the servo assisted hydraulic steering system, the power assisted steering system for catamarans includes the addition of a second power assisted steering cylinder on the second rudder (one each rudder). This allows the same boat maneuvering as in a traditional power assisted steering system with all connected advantages, such as: reduced revolution of the steering wheel low-effort during maneuvering autopilot interface automatic filling of the system conversion to manual system in case of failure of the hydraulic power pack. The synchronization of two rudders is guaranteed by a hydraulic bar that connects the two power assisted steering cylinders. A system of valves and bypass allows to maneuver with one rudder in case of failure of a hydraulic cylinder. 57

60 HYDROSTATIC STEERING SYSTEMS WITH ENGINE-DRIVEN PUMPS Steering Pump Driven and Steering In this type of steering system, hydraulic power is taken directly from the boat s propulsion package through hydraulic gear or axial piston pumps, depending on the power required by the system. The hydraulic power generated arrives to the hydrostatic unit that, by turning the steering wheel right or left, sends oil under pressure to the cylinder chamber corresponding to the desired maneuver and receives oil from the discharge opposite chamber of the cylinder sending it to the oil tank. The system is completed with valves for the autopilot, oil tank, oil filter, thermostat and level switch. SYSTEMS SPECIFICATIONS Torque Cylinder Model Cylinder Volume (cc) Hydrostatic Unit Volume (cc) # of Wheel Turns Hydraulic Pump Type Connection Type Absorbed Torque (Nm) Tank Volume (L) 4 MT MT MT MT MT MT Gear SAE A Z9 SAE A Z SAE B Z MT MT MT MT MT MT Axial pistons SAE B Z

61 ACCESSORIES Helm pumps and steering cylinders can be combined with several accessories to complete the system and maintain safety and control. It is possible to choose among many types of relief valves, non return and bypass valves, rudder angle indicator kits and fittings or hose kits for different configurations. Each of the following sections contains a selection of our most popular and requested items. For any additional information or suggestion for a specific application, please contact the Twin Disc Technical Department. non return valves 7, Nϒ6 G/4 DOUBLE NON RETURN VALVE MOD. MT50 WITH FITTINGS d. 0 DOUBLE NON RETURN VALVE MOD. MT50 WITH FITTINGS d. 2 DOUBLE NON RETURN VALVE - THREADS G/4 WITHOUT FITTINGS IT5706 IT79 IT ,5 Nϒ3 ø5, Nϒ3 ø6, ,5 T P 90 7 T T P T P 4 37 ~ ~ ~35, Nϒ4 ø8,5 B 84 P A B ~38 38 A 52 B A 22 ~ ,5 Nϒ6 G/2 Nϒ3 ø 5,5Nϒ4 G3/ ~44 44 Nϒ4 G/2 DOUBLE NON RETURN VALVE MOD. MT00 - FITTINGS d. 2 DOUBLE NON RETURN VALVE MOD. MT00 - FITTINGS d. /2 DOUBLE NON RETURN VALVE MOD. MT00 - PALPELLA FITTINGS d. 4 DOUBLE NON RETURN VALVE MOD. MT00 - PALPELLA FITTINGS d. 4 AND FITTINGS d. 2 DOUBLE NON RETURN VALVE MOD. MT00 - FITTINGS D. 4 DOUBLE NON RETURN VALVE MOD. MT00 - THREADS G3/8 WITHOUT FITTINGS DOUBLE NON RETURN VALVE MOD. MT00 - THREADS G/2 WITHOUT FITTINGS Bypass NON RETURN VALVE MOD. MT00 WITH FITTINGS d. 0 Bypass NON RETURN VALVE MOD. MT00 WITH FITTINGS d.2 Bypass NON RETURN VALVE MOD. MT00 WITH FITTINGS d. 4 Bypass NON RETURN VALVE MOD. MT00 - PALPELLA FITTINGS d. 4 Bypass NON RETURN VALVE MOD. MT00 THREADS G3/8 WITHOUT FITTINGS Bypass NON RETURN VALVE MOD. MT320 - PALPELLA FITTINGS d.4 Bypass NON RETURN VALVE MOD. MT320 WITH FITTINGS d. 8 Bypass NON RETURN VALVE MOD. MT320 - THREADS G/2 WITHOUT FITTINGS IT5708 IT23504 IT577 IT2353 IT7673 IT5380 IT3096 IT720 IT5707 IT7672 IT5770 IT5370 IT7280 IT5709 IT , ,5 CROSS RELIEF VALVE WITH G 3/8 THREADS - FITTINGS d.2 CROSS RELIEF VALVE WITH G /2 THREADS - FITTINGS d.4 IT7042 IT CROSS RELIEF VALVE WITH G /2 THREADS - FITTINGS d.8 IT5659 Nϒ4 G3/ CROSS RELIEF VALVE WITH d.2 THREADS - MALE FITTINGS G/2 CROSS RELIEF VALVE WITH d.4 THREADS - MALE FITTINGS G/2 IT23500 IT CROSS RELIEF VALVE WITH d.8 THREADS - MALE FITTINGS G/2 CROSS RELIEF VALVE G/2 THREADS WITHOUT FITTINGS IT23503 IT CROSS RELIEF VALVE G3/8 THREADS WITHOUT FITTINGS IT3079 Nϒ4 G3/

62 bypass Manual bypass with /4 cocks and fittings for d. 3/8 hose IT2386 MANUAL Bypass WITH /4 COCKS AND FITTINGS FOR d. 0 HOSE IT226 MANUAL Bypass WITH 3/8 COCKS AND FITTINGS FOR d. 2 HOSE IT6968 MANUAL Bypass WITH 3/8 COCKS AND FITTINGS FOR d. /2 HOSE IT23480 MANUAL Bypass WITH /2 COCKS AND FITTINGS FOR d. 4 HOSE IT23036 MANUAL Bypass WITH /2 COCKS AND FITTINGS FOR d. 8 HOSE IT23037 Ball-cock with lever Ball-cock with lever - /2 female - /2 female fittings BALL-COCK WITH LEVER - /4 FEMALE - /4 FEMALE FITTINGS BALL-COCK WITH LEVER - 3/8 FEMALE - 3/8 FEMALE FITTINGS IT4524 IT4526 IT4529 Rudder angle indicator set Knowing the exact position of the rudder is very important to drive the boat safely. For this reason, the steering range contains a kit of rudder angle indicators and transmitters. The set includes rudder angle indicators type San Giorgio SEIN having a range from 0 to +40, as well as a kit of angle transmitters which is supplied with the lever mechanism and a ball joint together with a rod for connection to the tiller. It is a very simple and precise system for control of position. Single-station rudder angle indicator kit Double-station rudder angle indicator kit code IT3608 code IT

63 FITTINGS Description Code for Zinc Plated Code for Brass Code for Chromium Plated Seal kit and fittings for cta cylinder bleeder IT23048 Seal kit and fittings for CTB cylinder bleeder IT23049 Seal kit and fittings for CTC cylinder bleeder IT23050 Seal kit and fittings for power-assisted CTA_A cylinder bleeder IT2305 Seal kit and fittings for power-assisted CTB_A cylinder bleeder IT23052 Seal kit and fittings for power-assisted CTC_A cylinder bleeder IT23053 Seal kit and fittings for CTAU and ob08-33 cylinder bleeder IT23054 Seal kit and fittings for CTBU cylinder bleeder IT23055 Seal kit and fittings for CTCU cylinder bleeder IT23056 Seal kit and fittings for power-assisted cta_au cylinder bleeder IT23057 Seal kit and fittings for power-assisted CTB_AU cylinder bleeder IT23058 Seal kit and fittings for power-assisted CTC_AU cylinder bleeder IT23059 Straight connection fitting G/2 - G/2 IT299 Straight connection fitting G3/8 - G3/8 IT298 Straight connection fitting d. 0 hose - d.0 hose IT7038 Straight connection fitting d. 2 hose - d.2 hose IT2877 Straight connection fitting d. 4 hose - d.4 hose IT2879 Straight connection fitting d. 6 hose - d.6 hose IT2880 Straight connection fitting d. 8 hose - d.8 hose IT288 Straight fitting G3/8 - d. 0 hose IT2800 IT4358 Straight fitting G3/8 - d. 2 hose IT280 IT4359 IT279 Straight fitting G3/8 - d. 4 hose IT2802 IT4360 Straight fitting G3/8 - d. 8 hose Straight fitting G3/8 - d. /2 hose IT436 IT2809 Straight fitting G/2 - d. 4 hose IT2793 IT2808 Straight fitting G/2 - d. 6 hose IT2794 Straight fitting G/2 - d. 8 hose IT2795 IT4355 Straight fitting G/4 - d. 0 hose IT4356 Straight fitting G/4 - d. 2 hose IT6043 Straight fitting /4 NPTF - d. /2 hose Straight fitting /4 NPTF - d. 3/8 hose IT2077 IT2784 6

64 Description Code for Zinc Plated Code for Brass Code for Chromium Plated Reduction - G3/8 Male - G/2 Female IT2836 Reduction - G3/8 Male - G/4 Female IT285 Reduction - G/2 Male - G3/8 Female IT2844 IT2839 Reduction - G/4 Male - G3/8 Female IT2848 IT2826 Reduction - G/2 Male - /4 NPTF Female Reduction - G/4 Male - /4 NPTF Female Reduction - /4 NPTF Male - 3/8 NPTF Female Straight Reusable Fitting for R7 5/6 hose - d. 0 Straight Reusable Fitting for R7 5/6 hose - d. 3/8 Straight Reusable Fitting for R7 3/8 hose - d. 2 Straight Reusable Fitting for R7 3/8 hose - d. /2 Elbow Reusable Fitting for R7 5/6 hose - d. 3/8 Elbow Reusable Fitting for R7 5/6 hose - d. 0 IT2 IT4352 IT23546 IT560 IT563 IT5720 IT23477 IT23476 IT578 Elbow Reusable Fitting for R7 3/8 hose - d. 2 IT572 Tee Fitting d.3/8 hose - /4 NPTF - d.3/8 hose Tee Fitting d.3/8 hose - 3/8 NPTF - d.3/8 hose Tee Fitting d./2 hose - 3/8 NPTF - d./2 hose IT4734 IT20837 IT4733 Tee Fitting d. 0 hose - G /4 d.0 hose Tee Fitting d.2 hose - G3/8 - d.2 hose IT4735 IT4750 Tee Fitting d.8 hose - G/2 - d.8 hose IT22482 Tee Fitting d.0 hose - G/4 - d.0 hose IT Elbow Fitting /4 NPTF - d./2 hose Elbow Fitting /4 NPTF - d.3/8 hose IT20574 IT676 Elbow Fitting G/4 - d.0 hose IT687 IT678 Elbow Fitting G/4 - d.2 hose IT688 Equal Tee Fitting d.3/8 hose Equal Tee Fitting d./2 hose IT2092 IT2093 Equal Tee Fitting d.0 hose IT4873 IT4874 Equal Tee Fitting d.2 hose IT4882 Equal Tee Fitting d.4 hose Equal Tee Fitting d.8 hose IT4877 IT

65 International Distributors Asia TWIN DISC (FAR EAST) PTE LTD 6, Tuas Avenue Singapore Phone: (65) Fax: (65) WARRANTY CONDITIONS See Company Literature page at for warranty information. Pacific Territories TWIN DISC (PACIFIC) PTY LTD - BRISBANE 40 Telford Street Virginia QLD 404 Phone: +6 (7) Fax: +6 (7) twindisc.brisbane@twindisc.com.au Mailing Address: PO Box 442 Virginia QLD 404 Australia North America TWIN DISC SOUTHEAST INC Phillips Highway Jacksonville, FL USA Phone: + (904) Phone: + (888) Fax: + (904) info@twindiscse.com Latin America TWIN DISC, INCORPORATED 3505 Lake Lynda Drive, Suite 200 Orlando, FL USA 3287 Phone: + (407) Europe, Middle East and Africa TWIN DISC SRL Via E. e P. Salani Limite Sull Arno (FI) Italy Phone: Fax: For local distributors, please visit the Sales & Service Locator page at Photographs Pubbli Photo di Cinelli Silvano All rights are reserved. Any reproduction of this catalogue, even partial, is absolutely forbidden without a written authorization of the copyright owner. Copyright 205 TWIN DISC Due to constant improvement, technical specifications and dimensions can be modified without previous notice. Printed August 205