HYDROSTATIC STEERING UNITS AND ACCESSORIES

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2 HYDOSIC SEEING UNIS ND CCESSOIES CONENS age Hydrostatic Steering Units ype XY.../1, 2... Hydrostatic Steering Units ype HKU.../, Hydrostatic Steering Units ype HKU.../7...6 Hydrostatic Steering Units ype HKU.../4B...8 Hydrostatic Steering Units ype HKUQ.../4...1 Hydrostatic Steering Units ype HKUS.../, 4, Hydrostatic Steering Units ype HKUS.../5()(E)(E)...15 Valve Blocks For HKU nd XY ype BKH...2 riority Valves For HKUS.../5... ype...22 riority Valves For HKUS.../5... ype.../ orque mplifiers ype UV...27 Steering Columns ype KK...29 General pplication nd Specification Information...4 +S HYDUIC can accept no responsibility for possible errors in catalogues, brochures and other printed material. +S HYDUIC reserves the right to alter its products without notice. his also applies to products already on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed.

3 HYDOSIC SEEING UNIS YE XY.../1 he +S Hydraulic Hydrostatic Steering units are used in low-speed vehicles which driving speed does not exceed 6 km/h - such as: building machines, fork-lift trucks, harvesting machines, off-highway equipment and others. hese hydraulic units amplify the torque to the steering wheels, with no need of hard mechanical connection. he XY hydrostatic steering unit incorporates an axially displaced tracing valve and a metering pump in one housing. he working liqid is supplied by a separate pump and then is directed by the metering pump to the steering cylinders. he XY steering unit is manufactured wiht a built-in check valves, and there is an option for a built-in relief valve in the inlet. "Open Center - oad eaction" With Built-in Valves Version1-XY.../1 SECIFICION D arameters Displacement ated Flow* ated ressure elief Valve ressure Settings** Shock Valves ressure Setting*** ax.cont.ressure in ine - ax.orque at Servoamplifing ax.orque w/o Servoamplifing Weight, avg. Dimension [cm /rev] [l/min] [Nm] [Nm] [kg] [mm] ype XY XY XY 85.../ / / ,4 16, 2 7,5 (by max) 125 6,6 6,8 141,5 144,5 * ated Flow at 1. 2 ** ressure Settings are at ated Flow (as in the table ) and viscosity 21 mm /s (5 C). 2 ***ressure Settings are at flow rate of 4 l/min and viscosity 21 mm /s (5 C).

4 XY... /1 SEEING UNIS DIENSIONS ND OUNING D 12 5 ø82±,1 4x1 12mm depth D With relief valve D x18x1,5 14mm depth 2x8 14mm depth 1 17,5 27, ,5 2,5,5 ø51 ø42 ø8 98 ø8 +,15 75,5 +,7 ø2 -,28 46 ODE CODE XY / 1 os.1 - Displacement code [cm /rev] [cm /rev] [cm /rev] os.2 - elief Valve ressure Settings 8-8bar 1-1 bar 12,5-125 bar bar - without elief Valve os. - Versions 1 - Version 1 "Open Center - oad eaction os.4 - Option (aint)* C - No aint - ainted - Corrosion rotected aint os.5 - Design Series - Factory specified NOES: * Colour at customer s request. he steering units are mangano-phosphatized as standard. 4

5 HYDOSIC SEEING UNIS YE HKU.../, 4 he newly designed HKU steering units, with radial distribution, incorporate two rotary tracing valves in the housing, which turn on the metering pump. "Open Center - oad eaction" Version -HKU.../ "Open Center - Non oad eaction" Version 4-HKU.../4 SECIFICION D ype HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU arameters 4/ 5/ 6/ 8/ 1/ 125/ 16/ 2/ 25/ 2/ 4/ HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU 4/4 5/4 6/4 8/4 1/4 125/4 16/4 2/4 25/4 2/4 4/4 5/4 6/4 8/4 1/4 Displacement [cm /rev] 9,6 49,5 65,6 79,2 99, 12,8 158, ,5 16, , ated Flow* [l/min] ated ressure ax. Cont. ressure 25 in ine - ax. orque at 6 (bymax) Servoamplifing [Nm] ax. orque w/o Servoamplifing [Nm] 12 Weight, avg. [kg] 5, 5,4 5,5 5,6 5,7 5,8 6, 6, 6,5 7, 7,4 8, 8,7 9,6 1,6 Dimension [mm] 1,8 12,21,9 16,2 18,8 142,2 146,8 152,2 158,8 168,2 178, , 22,2 258,6 * ated Flow at 1. 2,8 5 44±,15 DIENSIONS ND OUNING D ø5,6h12x6, 1, ,5 6±,15 ø44,4 -,2 18±, 44±, V he ports are shown in the able of page 7. ø82±,1 19 mm depth, NSI B D 16/2, 12 teeth B 5

6 HYDOSIC SEEING UNI YE HKU.../7 he HKU.../7 is a "Closed Center - Non oad eaction" hydrostatic steering unit, designed for integration into systems with built-in hydroaccumulator, achieving minimal energy losses. When connecting to a differential cylinder the and ports of the steering unit must be connected as follows: to the greater piston area, and - to the smaller one. For the "Closed Center - Non oad eaction" and "Closed Center - Non eaction and oad Sensing" steering units is possible to observe hermal Shock - condition caused when the hydraulic system has operated for some time without turning the steering wheel, causing the fluid in the reservoir and the system to heet up while the steering unit is relatively cool (i.e. there is more than 1 C difference in the temperature). If, under the condition of hermal Shock, the steering wheel is turned very quickly, it is possible to experience "Closed Center - Non oad eaction" Version 7-HKU.../7 temporary seizure and have the internal parts of the steering unit damaged. he temporary seizure may be followed by a total free wheeling. * ated Flow at 1. 5, 5,4 5,5 SECIFICION D arameters HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU 4/7 5/7 6/7 8/7 1/7 125/7 16/7 2/7 25/7 2/7 4/7 5/7 6/7 8/7 Displacement [cm /rev] 9,6 49,5 65,6 79,2 99, 12,8 158, ,5 16, ,7 79 ated Flow* [l/min] ated ressure ax. Cont. ressure in ine - standard 2 - high pressure (H option) 4 ax. orque at Servoamplifing [Nm] -with standard springs -with soft springs ( option) ax. orque w/o Servoamplifing [Nm] Weight, avg. [kg] Dimension [mm] 5,6, 1,8 5,7 ype 5,8 6, 12 1,8 12,2 1,9 16,2 18,8 142,2 146,8 152,2 158,8 168,2 178, , 22,2 HEDED OS 6, 6,5 7, 7,4, - 8, 8,7 9,6 c o d e orts-,,, hread Column ounting hread - B Valve ounting hread - V - G1/2 17 mm depth 4 x 1 2 x 1x1 16 mm depth /4-16 UNF O-ring 17 mm depth 4x /8-16 UNC 15,7 mm depth 2x/8-24UNF 14,2 mm depth 22x1,5 17 mm depth 4 x 1 2 x 1x1 16 mm depth 6

7 SEEING UNIS DIENSIONS ND OUNING D 1,5 84 2,8 5 44±,15 ø5,6h12x6, 58,5 6±,15 ø44,4 -,2 18±, 44±, V ø82±,1 19 mm depth, NSI B D 16/2, 12 teeth B ODE CODE HKU / os.1 - Displacement code (see Specification Data) 4-9,6 [cm /rev] 5-49,5 [cm /rev] 6-65,6 [cm /rev] 8-79,2 [cm /rev] 1-99, [cm /rev] ,8 [cm /rev] ,4 [cm /rev] 2-198, [cm /rev] ,5 [cm /rev] 2-16,8 [cm /rev] 4-96, [cm /rev] 5-495, [cm /rev] 6-618,7 [cm /rev] 8-792, [cm /rev] 1-99, [cm /rev] os.2 - Versions Version Open Center - oad eaction - Version 4 Open Center - Non oad eaction - Version 7 Closed Center - Non oad eaction os. - orts - BS (ISO 228) os.4 - ax. Cont. ressure in line - Standard H - High pressure os.5 - Input torque - Standard * -ow os.6 - Option (aint)** C - No aint - ainted - Corrosion rotected aint os.7 - Design Series - SE (NSI B ) - etric (ISO 262) - Factory specified NOES: * vailable only for displacement from 4 to 2. ** Colour at customer s request. he steering units are mangano-phosphatized as standard. 7

8 HYDOSIC SEEING UNI YE HKU.../4B he hydrostatic steering unit is available for steering medium and large sized transport vehicles as building and agricultural machines. HKU /4B works as standard steering unit with auxiliary port destined for flow providing additional vehicles functions. When the steering wheel is not turned, the flow will be delivered to port B. fter steering wheel has been turned a part of flow will be deviated to the steering unit and the flow trough port B will be inconstant. It is not recommended to use this unit in systems with auxiliary functions during the vehicle steering. "Open Center - Non oad eaction" HKU.../4B - ower Beyond SECIFICION D arameters Displacement, [cm /rev] ated Flow -5 ort (ower Beyond) [l/min] ated ressure, ax. ressure in ine B, ax. Cont. ressure in ine -, ax. orque at Servoamplifing, ax. orque w/o Servoamplifing, Weight, Dimension, [Nm] [Nm] [kg] [mm] ype HKU HKU HKU HKU HKU HKU 4/4B 5/4B 6/4B 8/4B 1/4B 125/4B 9,6 5, 49,5 5,4 65,6 5,5 2, ,2 (by max) 15 5,6 99, 5,7 12,8 5,8 1,8 12,2 1,9 16,2 18,8 142,2 8

9 SEEING UNIS DIENSIONS ND OUNING D 1,5 84 2,8 5 44±,15 58,5 6±,15 ø44,4 -,2 B 44±, V ø82±,1 19 mm depth, NSI B D 16/2, 12 teeth B HEDED OS for HKU.../4B c o d e orts-,,,,b hread Column ounting hread - B Valve ounting hread - V - G/8 17 mm depth 4 x 1 2 x 1x1 16 mm depth 9/16-18UNF O-ring 17 mm depth 4x /8-16 UNC 15,7 mm depth 2x/8-24UNF 14,2 mm depth ODE CODE for HKU.../4B HKU / 4B - os.1 - Displacement code (see Specification Data) 4-9,6 [cm /rev] 5-49,5 [cm /rev] 6-65,6 [cm /rev] 8-79,2 [cm /rev] 1-99, [cm /rev] ,8 [cm /rev] os.2 - Versions 4B - Version 4 "Open Center - Non oad eaction" with 5 ports(ower Beyond) os. - orts - BS (ISO 228) - SE (NSI B ) os.4 - Option (aint)* C - No aint - ainted - Corrosion rotected aint os.5 - Design Series - Factory specified NOES: *Colour at customer s request. he steering units are mangano-phosphatized as standard. 9

10 HYDOSIC SEEING UNI YE HKUQ.../4 HKUQ.../4 is a new series of hydrostatic steering units with an additionally increased flow. he hydrostatic steering unit type HKUQ /4 is available for steering medium and large sized vehicles, allowing easy control either in servo-amplified mode or in emergency operation. HKUQ /4 is an Open Center-Non oad eaction hydrostatic steering in which restrictor for amplifying factor from 1, to 2,5 is built-in. In accordance with the size of the gear wheel set and amplifying factor, HKUQ 4 has the following working volume: - from 8 cm to 2 cm for emergency operation mode (manual steering without servo-amplifying; - from 1 cm to 5 cm for normal operation mode ( with total flow amplifying). -1 here is no servo-amplifying of flow if low steering speed till 1 min is applied. In -1 steering speed increase over 2 min there is total servo-amplifying of flow. In this mode gear wheel set flow and restrictor flow are added. VIBE IFYING FCO "Open Center - Non oad eaction" HKUQ.../4 arameters SECIFICION D HKUQ 8/.../4 HKUQ 1/.../4 ype HKUQ 125/.../4 HKUQ 16/.../4 HKUQ 2/.../4 Displacement - without servo-amplifying (in emergency mode) 79,2 99, 12,8 158, with servo-amplifing [cm /rev] ated Flow* [l/min] 1 12, , mplifying Factor -1 (at shaft revolution over 2 min ) 1, 1,5 2, 2,5 1, 1,5 2, 2,5 1, 1,5 2, 2,5 1, 1,5 2, 2,5 1, 1,5 2, 2,5 ated ressure 17 ax. Cont. ressure in ine ax. orque at Servoamplifing [Nm] 25 ax. orque w/o Servoamplifing [Nm] 12 Weight, avg. [kg] 5,6 5,7 5,8 6, 6, Dimension [mm] 16,2 18,8 142,2 146,8 152,2 * ated Flow at 1. 1

11 SEEING UNIS DIENSIONS ND OUNING D 1,5 84 2,8 5 44±,15 ø5,6h12x6, 58,5 6±,15 ø44,4 -,2 18±, 44±, V ø82±,1 HEDED OS for HKUQ... B 19 mm depth, NSI B D 16/2, 12 teeth c o orts - *,,, Column ounting d e hread hread - B G1/2 4 x 1-17 mm depth /4-16 UNF 4x /8-16 UNC O-ring 17 mm depth 15,7 mm depth 22x1,5 4 x 1 17 mm depth 2x1,5 4 x 1 X 17 mm depth *hreaded ort min 16 mm depth. Valve ounting hread - V 2 x 1x1 16 mm depth 2x/8-24UNF 14,2 mm depth 2 x 1x1 16 mm depth 2 x 1x1 16 mm depth HKUQ ODE CODE for HKUQ / / 4 - os.1 - Displacement code (see Specification Data page 1) 8-79,2 [cm /rev] 1-99, [cm /rev] ,8 [cm /rev] ,4 [cm /rev] 2-198, [cm /rev] os.2 - Displacement with amplifying factor 1,; 1,5; 2, or 2, k=2,5 k=1, k=1,5 k=2, he steering units are mangano-phosphatized as standard. 11 os. - Versions 4 - Version 4 Open Center - Non oad eaction os.4 - orts - BS (ISO 228) X os.5 - Option (aint)** C - No aint - ainted - Corrosion rotected aint os.6 - Design Series - SE (NSI B ) - etric (ISO 262) - etric (ISO 262) - Factory specified NOES: * Exemplary designation of steering unit with displacement 2 cm and amplifying factor 2,5 HKUQ 2/5/4 ** Colour at customer s request.

12 HYDOSIC SEEING UNIS YE HKUS.../, 4, 8 he HKUS Hydrostatic Steering unit is based on the HKU unit but has built-in relief and check valves. hus +S Hydraulic achieves one very compact steering unit which reduces the need for additional hydraulic components in the system. "Open Center - oad eaction" With Built-inValves Version -HKUS.../ "Open Center - Non oad eaction" With Built-in Valves Version 4-HKUS.../4 SECIFICION D "Open Center - Non oad eaction" With Built-in Valve Version 8-HKUS.../8 arameters Displacement [cm /rev] ated Flow* [l/min] ated ressure elief Valve ressure Settings** Shock Valves ressure Settings*** ax.cont. ressure in ine - standard - high pressure (H option) ax.orque at Servoamplifing -with standard springs -with soft springs ( option) ax.orque w/o Servoamplifing Weight, avg. Dimension [Nm] ype HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS 4/,4,8 5/,4,8 6/,4,8 8/,4,8 1/,4,8 125/,4,8 16/,4,8 2/,4,8 25/,4,8 2/,4,8 4/,4,8 5/,4,8 9,6 49,5 65,6 79,2 99, 12,8 158, ,5 16, (5- for HKUS.../8 ) 4 [Nm] 12 [kg] 5, 5,5 5,6 5,7 5,8 5,9 6,2 6,5 6,6 7,2 7,8 8, [mm] 1,8 12,2 1,9 16,2 18,8 142,2 146,8 152,2 158,8 168,2 178,8 192, * ated Flow at 1. 2 ** ressure Settings are at ated Flow (as in the table ) and viscosity 21 mm /s (5 C). 2 ***ressure Settings are at flow rate of 2 l/min and viscosity 21 mm /s (5 C). 12, 1,8, -

13 SEEING UNIS DIENSIONS ND OUNING D 1,5 84 2,8 5 44±,15 58,5 6±,15 ø44,4 -,2 V 44±, ø82±,1 B 19 mm depth, NSI B D 16/2, 12 teeth HEDED OS c o d e orts-,,, hread Column ounting hread - B Valve ounting hread - V - G1/2 17 mm depth 4 x 1 2 x 1x1 16 mm depth /4-16 UNF O-ring 17 mm depth 4x /8-16 UNC 15,7 mm depth 2x/8-24UNF 14,2 mm depth 22x1,5 17 mm depth 4 x 1 2 x 1x1 16 mm depth *hreaded ort min 16 mm depth. 1

14 SEEING UNIS ODE CODE HKUS / os.1 - Displacement code (see Specification Data) 4-9,6 [cm /rev] 5-49,5 [cm /rev] 6-65,6 [cm /rev] 8-79,2 [cm /rev] 1-99, [cm /rev] ,8 [cm /rev] ,4 [cm /rev] 2-198, [cm /rev] ,5 [cm /rev] 2-16,8 [cm /rev] 4-96, [cm /rev] 5-495, [cm /rev] os.2 - Versions Version Open Center - oad eaction - Version 4 Open Center - Non oad eaction - Version 8 Open Center - Non oad eaction os.4 - orts - BS (ISO 228) os.7 - Option (aint)*** C - No aint - ainted - Corrosion rotected aint os.8 - Design Series - SE (NSI B ) - etric (ISO 262) os.5 - ax. Cont. ressure in line H* os.6 - Input torque ** - Standard - High pressure - Standard -ow - Factory specified os. - elief Valve ressure Settings, bar Version anual Steering Check Valve elief Valve Inlet Check Valve Cylinder elief Valve nti- Cavitation Valve 4 8 NOES: * For Versions and 4 only. ** vailable only for displacement from 4 to 2. *** Colour at customer s request. he steering units are mangano-phosphatized as standard. 14

15 HYDOSIC SEEING UNIS YE HKU(S).../5()(E)(E) he HKU(S).../5()(E)(E) range expands the steering units family of +S Hydraulic with the "Closed Center - Non eaction and oad Sensing Outlet" version (static hydraulic connection to the priority valve). his range is manufactured in two versions; for modularly and pipe mounting and therefore were developed the two versions of priority (tracing) valves: D... and... HKU.../5 is designed to be connected with priority valves with built-in relief valves for rated flow up to 16 l/min:.../16. he control hydraulic circuits of the HKU(S).../5()(E)(E) steering units were designed to ensures minimal energy consumption (energy losses) in various hydraulic systems such as those of: fork-lift trucks, agricultural and construction machines and others. he HKUS.../5E and HKUS.../5E are equipped with an electrohydraulic relay, mounted in the E port, which supplies signal to the electric - control system. he relay can be pre-set to normally - open (N.O) or normally - closed (N.C) contacts, with control range from,1 to 5 bars. Upon customer's request the relay could be supplied with another type of fixing thread. *For operation in condition of hermal Shock see the notes on page 6. HKUS /5D... is a new generation steering unit, where the dynamic flow to S-line allows easy and smooth control when starting steering. ain features are: ow torque of the steering wheel,5 2, Nm at normal operating conditions; High steering speed, limited only by the operating flow and the pressure of the supplying pump; Constant oil flow to S-line at neutral position within,45,9 l/min. he unit works in a system with a dynamic priority valve and is appropriate for machines with increased energy saving requirements. odulary ounting E S HKUS.../5 S HKUS.../5E ipe ounting E S S S HKUS.../5 HKUS.../5E HKU.../5 15

16 HKUS... /5(E)() SEEING UNIS SECIFICION D arameters Displacement [cm /rev] ated Flow* [l/min] ated ressure S - Valve ressure Settings** Shock Valves ressure Settings*** ax.cont. ressure in ine - standard - high pressure (H option) ax.orque at Servoamplifing [Nm] -with standard springs -with soft springs ( option) ax.orque w/o Servoamplifing Weight, avg. Dimension [Nm] [kg] [mm] ype HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU HKU 4/5 5/5 6/5 8/5 1/5 125/5 16/5 2/5 25/5 2/5 4/5 5/5 6/5 HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS HKUS 4/5... 5/5... 6/5... 8/5... 1/ / /5... 2/ /5... 2/5...4/5... 9,6 49,5 65,6 79,2 99, 12,8 158, ,5 16, , , 1, ,4 5,5 5,6 5,7 5,8 5,9 6,2 6,5 6,6 7,2 7,8 8 8,7 1,8 12,2 1,9 16,2 18,8 142,2 146,8 152,2 158,8 168,2 178, , , - * ated Flow at 1. 2 ** ressure Settings are at flow rate of 6 l/min and viscosity 21 mm /s (5 C). 2 ***ressure Settings are at flow rate of 2 l/min and viscosity 21 mm /s (5 C). DIENSIONS ND OUNING D - HKUS.../5 1,5 84 2,8 5 44±,15 58,5 6±,15 ø44,4 -,2 V 44±, ø82±,1 19 mm depth, NSI B D 16/2, 12 teeth B 16 9

17 HKUS... /5(E)() SEEING UNIS DIENSIONS ND OUNING D - HKUS.../5E 1,5 84 2,8 5 44±,15 58,5 6±,15 ø44,4 -,2 V 44±, E 1 ø82±,1 19 mm depth, NSI B E 55 B D 16/2, 12 teeth DIENSIONS ND OUNING D - HKUS.../5 2,8 5 44±,15 S 1, ,5 S 6 6±,15 ø44,4 -,2 V 44±, ø82±,1 B 19 mm depth, NSI B D 16/2, 12 teeth *heportsare shownintheableofpage

18 HKU(S).../5(E) SEEING UNIS 2,8 DIENSIONS ND OUNING D - HKUS.../5E 1, ±,15 58,5 5 S 6 6±,15 ø44,4 -,2 V 44±, E ø82±,1 19 mm depth, NSI B D 16/2, 12 teeth E 55 B DIENSIONS ND OUNING D - HKU.../5 2, ±,15 S ø5,6h12x6, S 1, ,5 58,5 6±,15 ø44,4 -,2 18±, 44±, V ø82±,1 19 mm depth, NSI B D 16/2, 12 teeth B HEDED OS c o d e orts - *,,, hread Column ounting hread - B Valve ounting hread- V S - ort E - ort - G1/2 17 mm depth 4 x 1 2 x 1x1 16 mm depth G1/4 14 mm depth 1x1 1 mm depth /4-16 UNF O-ring 17 mm depth 4x/8-16UNC 15,7 mm depth 2x/8-24UNF 14,2 mm depth 7/16-2 UNF O-ring 12,7 mm depth 7/16-2 UNF O-ring 12,7 mm depth 22x1,5 17 mm depth 4 x 1 2 x 1x1 16 mm depth G1/4 14 mm depth 1x1 1 mm depth *hreaded ort min 16 mm. 18

19 SEEING UNIS HKUS ODE CODE for HKUS.../ / os.1 - Displacement code (see Specification Data) os. 5 - Electric Signal Connection 4-9,6 [cm /rev] - without electric signal connection 5-49,5 [cm /rev] E - with electric signal connection 6-65,6 [cm /rev] os. 6 - S - Valve ressure Settings, bar 8-79,2 [cm /rev] , [cm /rev] os. 7 - orts ,8 [cm /rev] - BS (ISO 228) ,4 [cm /rev] - SE (NSI B ) 2-198, [cm /rev] - etric (ISO 262) ,5 [cm /rev] os.8-ax. Cont. ressure in line 2-16,8 [cm /rev] - Standard 4-96, [cm /rev] H - High pressure os.2 - Versions 5 - Version 5 "Closed Center - Non eaction and os.9-input torque oad Sensing Outlet" - Standard os. - Signal ype * -ow - Static oad Signal os.1- Option (aint)** D - Dynamic oad Signal - No aint os.4 - riority Valve Connection - ainted - odulary ounting C - Corrosion rotected aint - ipe ounting os.11 - Design Series NOES: - Factory specified * vailable only for displacement from 4 to 2. ** Colour at customer s request. he steering units are mangano-phosphatized as standard. ODE CODE for HKU.../5... HKU / os.1 - Displacement code (see Specification Data) 4-9,6 [cm /rev] 5-49,5 [cm /rev] 6-65,6 [cm /rev] 8-79,2 [cm /rev] 1-99, [cm /rev] ,8 [cm /rev] ,4 [cm /rev] 2-198, [cm /rev] ,5 [cm /rev] 2-16,8 [cm /rev] 4-96, [cm /rev] 5-495, [cm /rev] 6-618,7 [cm /rev] os.2 - Versions 5 - Version 5 "Closed Center - Non eaction and oad Sensing Outlet" os. - riority Valve Connection - ipe ounting os.4 - orts - BS (ISO 228) os.7 - Option (aint)** C - No aint - ainted - Corrosion rotected aint os.8 - Design Series - SE (NSI B ) - etric (ISO 262) os.5 - ax. Cont. ressure in line omi H os.6 - Input torque * - Standard - High pressure - Standard -ow - Factory specified NOES: * vailable only for displacement from 4 to 2. ** Colour at customer s request. he steering units are mangano-phosphatized as standard. 19

20 VVE BOCKS FO HKU ND XY YE BKH... he +S Hydraulic BKH valves are developed to protect the components of the hydraulic circuit: pumps, steering units and cylinders - from overloads, impacts and cavitation. Some of their advantages are: easy integration into any hydraulic circuit, easy mounting to the steering unit, and quick and easy hose connections. Depending on the design and the built in valves the BKH valves can be divided into 6 types: BKH1... BKH5 and BKH, with BKH5 designed for XY steering units only. he maximum flow rate is in compliance with the whole range of HKU and XY steering units but no more than 8 l/min. he pressure settings for the entry relief valves and the shock valves are given in the table. BKH1, BKH BKH2 BKH BKH4 BKH5 SECIFICION D arameters ype BKH1, BKH BKH2 BKH BKH4, BKH5 ated Flow ated ressure elief Valve ressure Settings* Shock Valves ressure Settings** Weight, avg. [l/min] [kg] ,8 ; 2, 1,8 1, * ressure Settings are at flow rate of l/min and viscosity 21 mm /s (5 C). 2 **ressure Settings are at flow rate of 2 l/min and viscosity 21 mm /s (5 C). DIENSIONS ND OUNING D - BKH1, 2,, 4 8,5 44±,15 2 x ø x ø17 c o d e orts-,,, hread 6±,15 44±,15 8,5 ø4,76 6,2 -,5 - G1/2 2 mm depth /4-16 UNF O-ring 2 mm depth 22x1,5 2 mm depth 4 x ø29 1mmdepth 45 9 Connection to the HKU is done with 2 screws 1x1x4-8.8 DIN 912 or with 2 screws /8-24 UNF NSI B18.-76; 7,5 mm long. ightening torque: 2,5±,5 danm 2

21 BKH, BKH5 VVE BOCKS 14 6±, wo holes ø11** DIENSIONS ND OUNING D - BKH 82 4 x ø25 1,5 mm depth c o d e orts-,,, hread /4-16 UNF O-ring 22 mm depth 18x1,5 22 mm depth **Connection to the HKU is done with 2 screws 1x1x4-8.8 DIN 912 or with 2 screws /8-24 UNF NSI B18.-76; 7,5 mm long. ightening torque: 2,5±,5 danm DIENSIONS ND OUNING D - BKH5 85, ±,15 1 1,5±, ±,15 4±,2 7,5±,2 49±,2 6±,2 2xø8,5 2xø1,5 14 c o d e orts-,,, hread 16x1,5 14 mm depth 4xø2,5,5 mm depth BKH 17 +,2 2,5±, ODE CODE Connection to the XY is done with 2 screws 8x4-8.8 DIN 912 ightening torque: 2,5±,5 danm os.1 - Versions* with built-in valves: -Input relief valve on line. -Input check (non-return) valve on line. -Shock valves on lines and. -nti-cavitation valves on lines and. os.2 - elief Valve ressure Settings, bar** os. - orts *** - BS (ISO 228) os.4 - Option (aint)**** C - No aint - ainted - Corrosion rotected aint os.5 - Design Series - SE (NSI B ) - etric (ISO 262) - Factory specified NOES: * Versions,1,2,, 4-for HKU; 5- for XY ** hat does not concern version 2 and. *** For ort size see drawings on page 2 and 21. **** he colour is by customer s request. he valve blocks are mangano-phosphatized as standard. 21

22 IOIY VVES FO HKUS.../5... YE... he riority Valves distribute and trace the hydraulic flow from the supply pump of the hydraulic system to the hydraulic components which control and run the vehicle. he riority Valves are used only with the HKUS.../5(E)()(E) hydrostatic steering units. When connected, the steering unit and the priority valve represent sophisticated hydraulic tracing system that controls the flow in both main pipelines of the hydraulic system (the working and control one) at any time of its operation. s a static signal, the "S" signal must be used in systems with circuit stability. he connection between the, priority valves and the HKUS.../5(E) steering units has to be as short as possible, but should not exceed 1,5m (for iron pipe with ø4 internal diameter). When a rubber hose is used this length have to be even shorter. riority valves with dynamic signal work in a system with dynamic hydrostatic steering units type HKUS.../5D (5D). odulary ounting CF S CF S Static signal D...4,8/... EF Dynamic signal DD...4,8/... EF ipe ounting CF EF CF EF S S Static signal... 4,8/...;... 4,8/... Dynamic signal D... 4,8/...; D... 4,8/ EF -EF bar bar bar 4bar bar 4bar 4 2 in Qp [l/min] 4 in Qp [l/min] 22

23 D IOIY VVES SECIFICION D arameters ype D(D), (D) (D) ated Flow Control Spring ressure ax. ressures in Oil orts: Weight, avg. [l/min], EF,, S, CF [kg] 4; ,7 1,2 - pump, EF - excess flow, CF - control flow (first priority oil flow), - left, - right, S - load sensing, - tank DIENSIONS ND OUNING D - D(D) 4,8/... EF x ø25,5 mm depth 2 x ø29,5 mm depth * EF c o d e - orts-,ef hread G1/2 22x1,5 orts-,, hread G/8 18x1,5 7/8-14 UNF O-ring /4-16 UNF O-ring * Connection to the HKUS.../5... is done with 2 screws 1x1x DIN 912 or with 2 screws /8-24 UNF NSI B18.-76; 44,5 mm long. ightening torque: 4,5±,5 danm. 2

24 , IOIY VVES DIENSIONS ND OUNING D - (D) 4,8/... EF 2 x ø17 x ø29,5 mm depth ,1 CF 22 S 2 x ø1, c o d e orts-,ef hread ort-cf hread S - ort - G1/2 G1/2 G1/4 14 mm depth EF 22x1,5 22x1,5 G1/4 14 mm depth CF 7/8-14UNF O-ring /4-16 UNF O-ring 7/16-2UNF O-ring 12,7 mm depth DIENSIONS ND OUNING D - (D) 4,8/... 19,7 2, +,2 S=24 CF EF ø8,5 S 4 25±, 8±, S ,7 42 2,5 41±, x ø29,5 mm depth c o d e orts-,ef hread ort-cf hread S - ort - G1/2 G1/2 G1/4 14 mm depth CF EF 22x1,5 7/8-14 UNF O-ring 22x1,5 /4-16 UNF O-ring G1/4 14 mm depth 7/16-2 UNF O-ring 12,7 mm depth 24

25 IOIY VVES FO HKUS.../5... YE...16/ he riority Valves.../16 have built-in a pilot pressure relief valve, who protects the steering unit against excess pressure. he pilot pressure relief valve operates with the Shuttle of the riority valve to limit the maximum steering pressure - measured across the steering units ports. CF EF S Static signal 16/... SECIFICION D CF EF S arameters ype (E), D(E) ated Flow [l/min] Control Spring ressure ax. ressures in Oil orts:, EF S, CF Standart eleif Valve ressure Settings Weight, avg. [kg] * 4,9 Dynamic signal D 16/... CF EF S * - djusted valve pressure from 8 till 21 bar upon customer request. - pump, EF - excess flow, CF - control flow (first priority oil flow), S - load sensing, - tank, - pilot pressure Static signal with External ilot E 16/... -EF...16/ bar 7bar bar in. 2 Qp [l/min] 25

26 IOIY VVES DIENSIONS ND OUNING D /... EF CF 2, ,5 65 2,5 2 S 24 4 EF CF 2 x ø42,8mmdepth / - c o d e - ODE CODE 6 7 max ,5 5 2xø8,9±,2 orts-,ef hread G/4 2,5 mm depth 11/16-12UN O-ring 2,5 mm depth 27x2 2,5 mm depth ort-cf hread G1/2 18,5 mm depth /4-16 UNF O-ring 18,5 mm depth 18x1,5 18,5 mm depth S S,,-orts G1/4 12,5 mm depth 7/16-2 UNF O-ring 12,5 mm depth 12x1,5 12,5 mm depth os.1 - ounting D - odularly ounting - ipe ounting (odel 1) - ipe ounting (odel 2) os.2 - Signal ype - with Static signal D E* - with Dynamic signal - with Static signal w/ External ilot os. - ated Flow, l/min ** os.5 - orts - BS (ISO 228) os.6 - Option (aint)*** C - No aint - ainted - Corrosion rotected aint os.7 - Design Series - SE (NSI B ) - etric (ISO 262) - Factory specified os.4 - Control Spring ressure, bar NOES:* Only for 16/... ** Only for *** Colour at customer s request. he priority valves are mangano-phosphatized as standard. 26

27 .. OQUE IFIES YE UV... he +S Hydraulic UV orque mplifiers amplify the applied torque to the control shaft and thus ease the running of various transport vehicles such as: -agricultural and wood working machines; -road rollers and road cleaning machines; -fork-lift trucks and construction machinery; he totally transferred power in terms of output torque is up to 1,1 kw. he UV torque amplifiers with their simple design, consisted of a pump and an amplifier, ensure 4 times higher output torque than the applied one. he amplifying is achieved as follows; by rotating the input shaft to the left or right the spool and the bushing are displaced, and the hydraulic flow enters the system turning the gerotor set, which transfers the already amplified torque to the output shaft. One advantage of the UV torque amplifier is that it allows manual steering in cases of engine (pump) failure. UV... SECIFICION D arameters Displacement ated Flow* ated ressure** Input orque ax. Input orque orque Output at 7 bar. ressure Drop between and at ated Flow, ax. Speed of otation at ated Flow and ressure ax. Continuous ressure in ine Weight, avg. [cm /rev] [l/min] [Nm] [Nm] [Nm] [] [kg] UV 1 ype UV 16 99, 158, , , ,6...2, ,8 6,2 * ated Flow at 1. 2 ** ressure Settings are at ated Flow (as in the table ) and viscosity 21 mm /s (5 C). 27

28 OQUE IFIES DIENSIONS ND OUNING D 2,8 5 44±,15 ø22,17±,17 1, ,5 6±,15 ø44,4 -,2 44±,15 ø48 D Dimensions 57 V ype UV 1 UV 16 D F +,1 24, -,16 ø82±,1 19 mm depth, NSI B D 16/2, 12 teeth B [mm] [mm] 14, 151, 181,2 189,2 ø8±,8 12,7 F : woodruff key /16" x /4" DIN ,8 c o d e orts-, hread Column ounting hread - B ort ounting hread - V - G1/2 17 mm depth 4 x 1 2 x 1x1 16 mm depth /4-16 UNF O-ring 17 mm depth 4x/8-16UNC 15,7 mm depth 2x/8-24UNF 14,2 mm depth 22x1,5 17 mm depth 4 x 1 2 x 1x1 16 mm depth ODE CODE UV os.1 - Displacement code 1-99, [cm /rev] ,4 [cm /rev] os.2 - orts - BS (ISO 228) - SE (NSI B ) - etric (ISO 262) os. - Option (aint)* C - No aint - ainted - Corrosion rotected aint os.4 - Design Series - Factory specified NOES: * Colour at customer s request. he steering units are mangano-phosphatized as standard. 28

29 SEEING COUNS YE KK... he +S Hydraulic KK Steering Columns transfer the torque from the steering wheel of the vehicle to the HKU, HKUS or other of the same class steering units. he KK steering columns are consisted of a pipe in which is centered the control shaft. ermissible loads on the steering column are as follows: ax. torque applied to the steering wheel 24 danm ax. bending moment 2 danm ax. axial load 1 dan he steering column must be additionally supported when the length exceeds 15 mm. DIENSIONS ND OUNING D ø ,5±,6 ype KK 4 G 5,5 82 ø44,5 +,2 max. ø9 G 4 x ø11 82 ±,5 ype KKF ø ,5±,6 G 82 ø44,5 +,2 max. ø9 4 x ø11 82 G 15,2 ±,5 SECIFICION D G-G ø,48±,1 arameters, [mm] Weight, [kg] ype KK 75 KK 15 KK 9 KK 75 78,75 168,2 1,1 9 1,9 777,8, lease, contact factory or your regional manager regarding other lengths. ø17 29 ø19, ø2,4 ø2,47 Involute Spline Data odul Number of eeth ressure ngle itch 1, ,986

30 KK SEEING COUNS SHF EXENSIONS ø2,2 -, 4 Woodruff key 5 x 6,5-5 -, YE I 1: x 1,5 DIN , 2 48 B ø2,5 -, Woodruff key 5 x 7,5 B-B 5 -, YE II 1:2 B x 1,5 DIN ,6 +, 2 42 ø21 -, C C-C ø1,5±,1 YE III 1:16 C x 1,5 Number of teeth 6 ø19,12 -,5 -,1 ø2,55 -,21 ø22,212 -,96 +, 5 ø21,55 D YE IV 1:19,26 D 14 24, x 1,5 D-D ø1,587±,25 YE V ø21,84 -, 4 D Number of teeth 6 ø2,72±,5 ø21,79±,5 ø24,12±,25 1:19,26 D 11,2 24, x 1,5

31 KK SEEING COUNS SHF EXENSIONS I ø2,1 -, Woodruff key /16 x 7/8 I-I 4,76 +,25 YE VI 1:16 I 8 54 /4-16 UNF DIN ,2 -,2 ø19,±,5 J 18,25 J-J ø,86±,1 YE VII 1:,4 J 6,5 4,4 5/8-18 UNF Number of teeth 48 ø17,9±,5 ø19,2 -,5 ø2 -,9 YE VIII K K-K 16±,1 Woodruff key 4,76 +,25 /16 x 7/8 DIN , -,16 +,1 12,9±,1 45 K ø8 +,6 ø22,17±,17 1,9±,1 YE IX 24,9 ø9,5±,8 ø22,17±,17 1

32 KK SEEING COUNS INSING For column type KK ø55 a ounting Bracket For assembling the Steering column to the Steering units use four bolts through mounting bracket. ightening torque for bolts 1,5±,5 danm Four Bolts 1 or /8-16 UNC x(a+2) ø82±,1 Bolt Circle For column type KKF wo Bolts 1x2 mm or /8-16 UNC x.75 in. ø82±,1 Bolt Circle ø55 a ounting Bracket Steering column type KKF and steering unit must be assembled with nothing standing between them. Use two bolts through mounting bracket and two bolts through just the steering column. ightening torque for bolts ±,5 danm wo Bolts 1x(a+) mm or /8-16 UNC x (a+1.2) in. ø82±,1 Bolt Circle inimum Clearance at ssembly Steering wheel hub min. 1,6 ightening torque for the nut on the steering wheel connection: 4±,5 danm Steering column 2

33 KK SEEING COUNS SOUND SIGN CONNECION 42 E Option EE Option min. 1 5 ODE CODE KK os. 1 F - ounting Flange - Flange without abs - Flange with abs os.2 - ength, mm (acc. to table) os. - Shaft Extensions I, II, III, IV, V, VI, VII, VIII, IX os.5 - Option (aint)* C - No aint - ainted - Corrosion rotected aint os.6 - Design Series - Factory specified os.4 - Signal Connection (Option) - without electric signal connection E EE - with one electric signal connection - with two electric signal connection NOES: * Colour at customer s request. he steering columns are yelow galvanized as standard. Shaft End art ø16,5 +, ø16,5 +,19 +,1 ø22 G ø16 15 G ø2,4 Order No: x45 ø17 G-G ø,48±,1 ø19, ø2,4 ø2,47 Involute Spline Data odul Number of eeth ressure ngle itch 1, ,986

34 HYDOSIC SEEING UNIS GENE ICION ND SECIFICION INFOION ICION (SIZING ND SEEING SYSE DESIGN OCESS) SE ONE: Calculate approximate kingpin torque ( ). Note: Double if steered wheels are powered. = Kingpin torque in [danm]. G = Vehicle weight on steered axle in [dan] (use maximum estimated overload weight). = Coefficient of friction (use Chart No 1, dimensionless ) determined by / B (see Diagram No 1). l B = Nominal width of tyre print [m] (see Diagram No 1). l =G. = Kingpin offset. he distance between tyre centerline intersection at ground and kingpins centerline intersection at ground in [m] (see Diagram No 1). No Chart 1,7,6,5,4,,2,1 B l 2 Diagram No 2 inimum Effective adius rm F r H G Weight Kingpin ctual ength V adius rm SE WO: Calculate approximate cylinder; force-area-strokevolume. FOCE F= r F = Force required [dan] to steer axle. = Kingpin torque in [danm] from step one. Double if steered wheels are powered. r = Effective radius rm [mm] is the minimum distance from the centerline of the cylinders minimum and maximum stroke points parallel to the kingpin center pivot. his is not the physical length of the radius rm (see Diagram No 2 and Chart No 2). Chart No 2 r min = r max. cos 2 r max r min H Diagram No 1,2,4,6,8 1, 1,2 / B l SOKE H = Stroke [cm]. Calculate stroke of cylinder using Diagram No 2 and Chart No 2 as shavt. H=2r max.sin 2 F E = 2 = Cylinder area for axle cylinder set [cm ]. F = Force required from step two force formula [dan]. l B = Hydraulic pressure use following percentage of relief valve setting by amount of load on steered axle. Severe load 25% - medium load 55% - no load 75%. 4

35 SEEING UNI DIEE fter the cylinder set area is determined, the cylinder diameter can be calculated. D = Inside diameter of cylinder [cm]. d = oad diameter of cylinder [cm]. Choose type of cylinder arrangement and formula shown for that type. Differential Cylinder D Cross Connected Cylinders D= 4 +d2 2 D= Note: d 2 + d 2 2,15 D Balanced Cylinder d D Opposed Cylinder d DISCEEN V = Volume of oil [cm ]. n = Steering wheel turns lock to lock. Note: For differential cylinders applications the cylinder volume will be different for left and right turns - this means the value n( steering wheel turns lock to lock) will vary when turning to the left or right. SE FOU: V = V D = Displacement [cm ] per rev. V = Volume of oil [cm ]. n = Steering wheel turns lock to lock. D fter completing the above displacement calculation, choose the closest standard hydrostatic steering unit in displacement size that incorporates circuitry you require. ecalculate the number of steering wheel turns using the displacement of selected standard hydrostatic steering unit outlined above. Use the formula shown below. n = Calculate approximate minimum and maximum steering circuit flow requirements. Q= V n V V D V D Unit Conversion for Imperial or [1] etric D d D Q = Steering circuit flow [l/min]. 2 V D = Unit displacement [cm ] per rev. -1 N = Steering wheel input speed [rpm] (min ). ecommended steering speed is 5 to 1 rpm. D= 4 +d2 VOUE V=H. V = Volume. he total amount of oil required to move the cylinder rod(s) through the entire stroke [cm ]. H = Stroke [cm]. 2 = rea [cm ]. Note: For differential cylinders it is important to calculate average cylinder volume for step three using below formula. SE HEE: V = avg H. 2 2 (2D -d ) 4 D= Selecting displacement of hydrostatic steering unit. 4 t this point determine number of steering wheel revolutions desired for your application to steer the wheels from one side to the other (lock to lock). Depending on the type of vehicle and its use, this will vary from to 5 turns. any variables are involved in sizing the pump. We suggest that the manufacturer test and evaluate for desired performance. GENE INFOION FUID D: o insure maximum performance and life of the Hydrostatic steering units, use premium quality hydraulic oils. Fluids with effective quantities of anti-wear agents or additives are highly recommended. If using synthetic fluids consult the factory for alternative seal materials. Viscosity Viscosity at normal operating temperature should be approx. 2 mm²/s. Viscosity range 1 - mm²/s. emperature Normal operating temperature range from + C to+6 C. inimum operating temperature -4 C. aximum operating temperature +8 C. Note: Extended periods of operation at temperature of 6 C and above will greatly reduce life of oil due to oxidation and shorten life of product. 5

36 SEEING UNI Filtration he maximum degree of contamination per ISO 446 or CEO is: -2/17 open center units -19/16 closed center and load sensing -16/12 priority valves eturn line filtration of 25 m nominal (4-5 m absolute) or finer is recommended. In extremely dusty conditions filtration of 1 m absolute should be used. S U ll air must be purged from system before operating unit. It is extremely important that any external lines or units with load sensing or priority feature be completely bled. ines going to and from cylinders as well as lines to and from pump be purged of all air. It is recommended that a 1-15 mm filter be used between pump and steering unit before start up. OUNING UNIS ll hydrostatic steering units should be installed for ease of access. It is recommended that the steering unit be located outside the vehicle cabin. It is important that no radial axial load be applied to the hydrostatic steering unit input shaft. ny or all radial and axial loads must be absorbed by the steering column or other operating device supplied by the vehicle manufacture. orts on the steering cylinder(s) should face upward to prevent damage. During installation of the hydrostatic steering unit, cleanliness is of the utmost importance. ipe plugs should be left in place during mounting and only removed when hydraulic lines are to be connected. OQUE IGHENING VUES Fluid connections Fluid connection metal edge ax. tightening torque danm copper washer aluminum washer O - ring 7/16-2 UNF 2 9/16-18 UNF 5 /4-16 UNF 6 7/8-14 UNF 7 G 1/4 4 2 G / G 1/2 1 8 G / x x 1, x 1,5 1 8 ounting bolts ounting bolts ightening torque danm /8-16 UNC, ±,5 1x1 6,5 ±,5 1, ±,5 6

37 WNY +S Hydraulic warrants, what it's products are free of defects in material or workmanship. his warranty will apply only to defects appearing within 2 years after the date of production of the product. If Customer notify +S Hydraulic within the above period about any such defects, +S, at its sole option will replace or repair the defective products. HE FOEGOING IIED WNY IS VIBE ONY IF +S HYDUIC IS OY NOIFIED IN WIING OF HE EGED DEFEC ND DOES NO COVE FIUE O FUNCION CUSED BY DGE O HE ODUC, IOE INSION, UNESONBE USE O BUSE OF HE ODUC, FIUE O OVIDE O USE OF IOE INENNCE O USU, DEGDION OF HE ODUC DUE O HYSIC ENVIONENS OF N USU NUE. HE FOEGOING EEDIES E HE SOE ND EXCUSIVE EEDIES VIBE O CUSOE. IIION OF IBIIY +S Hydraulic's liability for any claim of any kind, for any loss or damage arising out of, connected with or resulting from an order, or from the performance or branch thereof, or from the design, manufacture, sale delivery, operation or use of any of its products shall be limited to, at +S 's sole option, replacement, repair of any defective product or the issuance of a credit to Customer against any future purchases. Cash refunds will not be made under any circumstances and Customer will not be entitled to recover any damages of any kind against +S Hydraulic, including but not limited to incidental or consequential damages, whether direct or indirect, known or unknown, foreseen or unforeseen.