Directional Control Valve HDS21

Transcription

1 Directional Control Valve Reference: N-2 Issue: /64

2 Contents age 1 General information Introduction Directional valve installation Fittings Hydraulic fluid Filtration Directives and standards Dimensional data erformance data Inlet covers Dimensions and configurations Inlet cover hydraulic schemes Inlet cover valves Valve sections Characteristics and dimensions Spools Manual positioners Direct acting ON-OFF control Hydraulic controls (H) neumatic control lectro-hydraulic open loop proportional / ON-OFF control (HO) lectro-hydraulic proportional control with lever option (HM) Levers Anti-cavitation valves (C) Anti-shock and anti-cavitation valves (UC) Intermediate sections nd covers nd cover without pilot lines (M) nd cover with pilot lines (H) nd cover with pilot lines and pilot oil supply pressure reducing valve (H) Upper HC kit ressure reducing valve (VR) Back pressure valve (VC) Additional electric and electronic devices Coils and connectors Spool position hall effect sensor / N-2/3.218

3 7 Suitable applications (examples) Wheel loaders elehandlers Forestry & Backhoes Composition of ordering code Inlet cover Valve sections nd cover roduct identification plate N-2/ /64

4 1 General information 1.1 Introduction Several decades of leading presence and successful supplies in the earthmoving applications, the deep know how gained in the material handling sector and the strong commitment to anticipate the upcoming technical and application needs of our customers, have guided Bucher Hydraulics in the development of. he stackable construction with a wide range of inlet and outlet cover configurations, up to 1 parallel and series elements, possibility to utilize several different controls, gives the machine designer a high degree of freedom in the choice of the assembling position of the valve and of the hydraulic circuit which fits in the best way the machine requirements. elehandlers ach valve section can be equipped with various type of spools, in order to satisfy the application specific requirements in terms of hydraulic circuit and precise control of the machine functions. can be equipped with single levers or dual axis joystick, as well as hydraulic proportional and open loop electro hydraulic proportional controls. he wide range of controls combined with the compact dimensions makes the a very flexible valve able to fulfill all the requirements of modern machines. Wheel Loaders Backhoe Loaders Fork Lifts Forestry Cranes ractors 4/ N-2/3.218

5 1.2 Directional valve installation For the installation of the directional control valve on the equipment frame it is important to consider the following recommendations: - the valve can be assembled in any position but, in order to avoid deformations and spool sticking, the surface on which the product is mounted has to be flat; - before connecting pipelines, make sure that the pipeline hollows as well as fittings and seals are thoroughly clean; check also that the work ports are protected until the connection of the pipelines - during assembly and servicing operations, it is necessary to adopt clean procedures and work in an environment free of chips, swarf, dust and other possible source of pollution; - if the spools are connected to the equipment controls through linkages, make sure that they do not affect their operations; - before painting the valve, check that the work port plastic plugs are tightly in place; - do not use high pressure jet washer directly on the valve to prevent water infiltration inside lever and spool caps. 1.3 Fittings In the interest of safety, only fittings with SRAIGH HRAD NDS have to be used. Fittings with ARD HRAD NDS shall never be used, as they can cause deformation and cracks in the valve body. Warranty conditions will not be valid in case tapered fittings are used. he work port adaptors have to be fastened respecting the tightening torque values indicated in the following table (for different port types contact our Sales Dept.): Cavity Recommended tightening torque for work port fittings - Nm / lbft Metric - ISO 261 M14X1. M18X1. M22X1. M27x2 With O-Ring seal (ISO ) With copper washer (ISO ) With rubber washer or steel (ISO ) 3 / / / / / / / / / / / / 1.7 BS - ISO /4 BS 3/8 BS 1/2 BS 3/4 BS With copper washer (ISO ) With rubber washer or steel (ISO ) 3 / / / / / / / / 1.7 UN-UNF - ISO 263 SA6-9/16-18 UNF SA8-3/4-16 UNF SA1-7/8-14UNF SA12-1-1/16-12UNF With O-Ring seal (ISO ) 3 / / / / 66.4 IMORAN!: ightening torques depend on several different factors including lubrication, coating and surfaces finish. he fitting manufacturer shall be consulted. 1.4 Hydraulic fluid he main function of the fluid used in hydraulic systems is to transfer energy but it performs also other important functions: protect the components from corrosion, lubricate the directional valve moving parts, remove particles and heat from the system. In order to ensure proper operation and long life of the system it is important to choose the correct hydraulic fluid with proper additives. Bucher Hydraulics recommends to use a mineral based oil 1. Filtration In order to ensure proper operation and long life of the directional valve components it is extremely important to provide a proper and effective filtration of the hydraulic fluid. It is advisable to follow filter manufacturers instructions and recommendations. he fineness of the filter should be selected in order to maintain the fluid contamination level according to the according to type HM (ISO 6743/4) or type HL (DIN 124) only. he system should be operated only with hydraulic oil containing anti-foaming and antioxidant additives. Before using other types of fluid, please contact our Sales Dept, since they can cause serious damage to the directional valve components and jeopardize the correct function of the system. values listed at section (echnical specification) articular attention has to be paid to the cleanliness of the machine hydraulic circuit and its components before the first run-in, since the presence of foreign materials could cause damages to the directional valve components even if a proper filtration is provided N-2/3.218 /64

6 1.6 Directives and standards - D (97/23/C) he pressure relief valves assembled into the directional control valve cannot be considered and/or confused with the safety valve when the D Directive is applied to the hydraulic system. - Atex Attention: he equipment and protective systems of this catalogue AR NO intended for use in potentially explosive atmospheres. Ref: Directive 99/92/C and Directive 214/34/U - ISO 91:21 / ISO 141:21 Bucher Hydraulics S.p.A. is certified for research, development and production of directional control valves, power units, gear pumps and motors, electro-pumps, cartridge valves and integrated manifolds for hydraulic applications echnical specification IMORAN!: arameter values and diagrams shown in this catalogue have been measured with mineral oil having a viscosity of 23 mm 2 /s at C Features Nominal flow range Max inlet pressure () 1) Max work port pressure (A/B) 1) Max back pressure () Max internal leakage A/B (at 1 bar/14 SI, 23 mm 2 /s) 2) standard with electro-hydraulic positioner (HO) with ON/OFF control standard without port valves standard with port valves ON-OFF without port valves 8 l/min (21 US gpm) 29 bar (42 psi) 32 bar (464 psi) 3 bar (43 SI) 1 bar (14 SI) 2 bar (29 SI) 16 cc/min (*) (.976 Cu In/min) 21 cc/min (*) (1.281 Cu In/min) 4 cc/min (*) (2.746 Cu In/min) ON-OFF with port valves cc/min (*) (3.1 Cu In/min) Fluid mineral based oil (see 1.4 ) Fluid temperature (with NBR seals) -2 C / +8 C (-4 to 176 F) Contamination class 21/19/16 ISO446:1999 (NAS 1638 class1) Contamination class with electro-hydraulic controls 2/18/1 ISO 446:1999 (NAS 1638 class 9) Viscosity operating range recommended from 1 to 7 mm 2 /s admissible from 12 to 4 mm 2 /s Max number of elements 1 Ambient temperature in operating conditions: with mechanical/hydraulic/ pneumatic controls with electric/ electrohydraulic devices from -3 to +6 C from -3 to + C ie-rods tightening torque standard 22.±2. Nm For different operating conditions, please contact our Sales Dept. 1) Fatigue tested according to internal procedure at 1.16x rated pressure on samples for 1 cycles. For work port sizes bigger than ½ BS and for specific modules the rated pressure could be limited to a lower value (see correspondent paragraph) 2) Spool leakage values are strongly influenced by fluid viscosity with a linear inversed relationship: 1 cc/min at 1 bar and 23 cst become roughly cc/min at 1 bar and 46 cst. (*) Lower values can be provided on demand 6/ N-2/3.218

7 1.7 Dimensional data Manual operated A " 1.7".31" M12x1.7 Ø " 17.67" " " 2.32" " 1.38" " A B " 1.18" " " " 1.8" " Ø Hydraulic operated " 1.6" 1.6" B " 2.28" 1.7" 1.7" 1/4 BS " " " " ".67" M12x1.7 Ø " " " 1.38" " 1.1" A B A B A B " " 4.29" " 2.17" " " Ø " 1.6" 1.7" 1.7" A B 1/4 BS " " " N of section /1 /2 /3 /4 / /6 /7 /8 /9 /1 A mm inches B mm inches N-2/ /64

8 1.7.3 Hydraulic circuits combination examples arallel circuit 1 3 M HC BA B A BA 4 Series circuit 1 3 M HC B A BA B A 4 Series/parallel circuit 1 3 M 1 2 HC BA BA B A 4 andem circuit 1 3 M HC BA BA BA 4 8/ N-2/3.218

9 1.8 erformance data Open centre ressure drop: p [bar] Flow [l/min] Open centre ressure drop: 1 p [bar] Flow [l/min] Carry over (HC) 3 3 ressure drop: HC 1 2 p [bar] HC Flow [l/min] N-2/ /64

10 1.8.4 Inlet to work port A/B arallel circuit - Spool AS A B 3 2 ressure drop: A/B p [bar] Flow [l/min] A/B work port to outlet 3 arallel circuit - Spool AS A B 3 p [bar] ressure drop: A/B Flow [l/min] A/B work port to outlet arallel circuit - Spool AS A B p [bar] ressure drop: A/B Flow [l/min] 1/ N-2/3.218

11 2 Inlet covers 2.1 Dimensions and configurations M " " 3.3" With relief valve RV Max: " " Max: 2.36" 1.38" 1.38" " " 38 1." " " ".66" " " " Lever side ositioner side 1..41" M12x1.7 (2 mm depth, see note *) " With B valve ositioner side M 1 Lever side Max: 113 Max: 4.4" RV = adjustable relief valve B = by-pass valve Attention: o handle the complete valve block use the M12x1,7 threaded hole. For the lifting operations use proper accessories like eye-bolts, cables, etc. certified and dimensioned for the weight to be lifted. Always handle with care and avoiding sudden accelerations N-2/ /64

12 2.1.1 orts size without pilot lines (M) For fully manual controlled valve blocks. ype 1 (optional) M (optional) M 11 1/2 BS - 3/4 BS - M 12 1/2 BS 1/2 BS 3/4 BS 1/4 BS M 31 SA1 - SA1 - M 32 SA1 SA1 SA1 SA6 M 1 M22x1. - M22x1. - M 2 M22x1. M22x1. M22x1. M14x orts size with pilot lines (H) For valve blocks with electro-hydraulic controlled sections. ype 1 (optional) M (optional) p H 11 1/2 BS - 3/4 BS - M1x1 H 12 1/2 BS 1/2 BS 3/4 BS 1/4 BS M1x1 H 31 SA1 - SA1 - M1x1 H 32 SA1 SA1 SA1 SA6 M1x1 H 1 M22x1. - M22x1. - M1x1 H 2 M22x1. M22x1. M22x1. C M1x1 p p p 12/ N-2/3.218

13 2.2 Inlet cover hydraulic schemes M with main relief valve,, Basic version M with main relief valve,, 1, M, H with main relief valve,, and pilot lines check valve 1 p p p M RV1 RV1 RV1 H with main relief valve,,, B solenoid valve normally open and p Check valve p p p RV1 lug p B N-2/ /64

14 2.3 Inlet cover valves Standard relief valve RV RV 27.±2. Nm 27 VC 27 38±1% Nm RV Alternative assembly positions VC ressure setting range bar (psi) ype Code max " amper proof plastic cap * 3-9 (43-137) (139-34) (36-464) Y GR BL lug VC * Supplied on demand. Code: p [bar] max " p [bar] bar bar Flow [l/min] Flow [l/min] 14/ N-2/3.218

15 2.3.2 Unloading solenoid valve (B4) Max operating pressure 24 bar Normally open Normally closed 38±1% Nm 27 See RV1 RV1 ÓÓ B4 B4 Max: 113 Max: 4.4" Circuit Manual override ype Code without coil Alternative assembly positions Normally open Normally closed With (*) A Without A With (*) C Without C 2772 (*) Screw type override must not be used for continuous operation but for emergency only. For available coil versions see N-2/ /64

16 2.3.3 Hydraulic operated unloading valve (B4/H) ype Code H ±1% Nm 1/4"BS " RV1 IL 24.9" IL Ó B4/H Alternative assembly positions ressure drop curves (B4) ressure drop: 3 With by-pass valve open and spools in neutral position ressure drop: 3 With by-pass valve open and neutral gallery close (one spool switched to full stroke) and A/B plugged p [bar] p [bar] Flow [l/min] Flow [l/min] 16/ N-2/3.218

17 2.3. Check valve ype Code C ±1% Nm 7±1% Nm C= internal drain (with check valve), externally plugged = external drain, internally plugged N-2/ /64

18 3 Valve sections 3.1 Characteristics and dimensions A B ilot internal lines p / p " 14.71" Manual and hydraulic interface MAN (*) lectro-hydraulic interface H Service port valve cavity (if requested) A " 1.14" B Service port valve cavity (if requested) 4 1.7" 2.79" (*) for Manual, H and ON-OFF controls Attention: flanging manifolds on the top work port surface of a valve section is not allowed wothout previous approval by our echnical Department. Larger flanging manifolds that connect together two or more valve sections are forbidden. 18/ N-2/3.218

19 3.1.1 arallel valve bodies without pilot lines o be used with M and M covers only. ype hread Interface Without A/B service port valve cavities With A/B service port valve cavities 1/2 BS MAN K14 K13 SA1 MAN K34 K33 M22x1. MAN K4 K arallel valve bodies with pilot lines (p/p) o be used with H and H covers only. For valve blocks with electro-hydraulic controlled sections. ype hread Interface Without A/B service port valve cavities With A/B service port valve cavities 1/2 BS MAN K12 K11 1/2 BS H K18 K17 SA1 MAN K32 K31 SA1 H K38 K37 M22x1. MAN K2 K1 M22x1. H K6 K N-2/ /64

20 3.1.3 arallel circuits MAN with internal pilot line p, p H with internal pilot line p, p p p p p p p p p p p p p B A Same circuit with service port valves B A Same circuit with service port valves p p p p p p p p p p p p B A B A ON with parallel circuit 2/ N-2/3.218

21 3.1.4 Series and tandem valve bodies without pilot lines o be used with M and M covers only. ype hread Interface Without A/B service port valve cavities With A/B service port valve cavities 1/2 BS MAN K14 K13 SA1 MAN K34 K33 M22x1. MAN K4 K Series and tandem valve bodies with pilot lines (p/p) o be used with H and H covers only. For valve blocks with electro-hydraulic controlled sections. ype hread Interface Without A/B service port valve cavities With A/B service port valve cavities 1/2 BS MAN K12 K11 1/2 BS H K18 K17 SA1 MAN K32 K31 SA1 H K38 K37 M22x1. MAN K2 K1 M22x1. H K8 K N-2/ /64

22 3.1.6 Series circuits MAN with internal pilot line p, p H with internal pilot line p, p p p p p p p p p p p p 2 p B A B A Same circuit with service port valves Same circuit with service port valves p p p p p p p p p p p 2 p B A B A CLOSD with series circuit 22/ N-2/3.218

23 3.1.7 andem circuits MAN with internal pilot line p, p H with internal pilot line p, p p p p p p p p p p p p p B A B A Same circuit with service port valves Same circuit with service port valves p p p p p p p p p p p p B A B A CLOSD with tandem circuit N-2/ /64

24 3.2 Spools Standard spools A S X ype of circuit Spool size Specific design Metering configuration S = Standard spool A = High metering to tank on lever side B = High metering to tank on positioner side Spool ype Hydraulic schematic Features Application examples AS AB AA Double acting A/B closed AB - AA LOADRS BOOM and BUCK FUNCION CS Double acting A/B to tank GS Single acting B closed Fork lift LIFING FUNCION SS Single acting A closed Fork lift LIFING FUNCION ZS 3 Double acting Floating in position 3 4th floating position by pulling the spool (Manual controls only) XS Double acting A/B closed Series WS 4 Double acting Floating in position 4 4th floating position by pushing the spool RB* A B 4 Double acting A/B closed Regen in position 4 AB Double acting A/B closed LOADRS BOOM and BUCK FUNCION For H controls only W 4 Double acting Floating in position 4 4th floating position by pushing the spool LOADRS BOOM FUNCION For H controls only * A special body is required 24/ N-2/3.218

25 Spool size metering: A/B (inlet flow l/min) 6 Spool size metering: A/B (inlet flow 7 l/min) 8 7 Flow [l/min] bar 1 bar 2 bar Flow [l/min] bar bar 2 bar Stroke [mm] Spool size metering: A/B (port flow 1 l/min) metering configuaration S Stroke [mm] Spool size metering: A/B (port flow 1 l/min) High metering to tank spools Metering configuration A and B and floating bar 1 Flow [l/min] bar bar Flow [l/min] bar 1 bar bar Stroke [mm] Spool assembly direction ositioner kit on A port - standard position Stroke [mm] ositioner kit on B port - inverted spool B A A B K11AS79L1 K11AS79L1I N-2/ /64

26 3.2.2 Direct acting ON/OFF spools A ype of circuit Spool ype Hydraulic schematic Features A Double acting A/B closed B Double acting A/B closed closed C Double acting A/B to tank D Double acting A closed B to tank G Single acting B closed L Double acting B closed A to tank S Single acting A closed X Double acting A/B closed Series XC Double acting A/B to tank Series 26/ N-2/3.218

27 3.3 Manual positioners he standard position of positioner kits is on A port side Body interface MAN Spring return to neutral position 1±1% Nm " Force [N] FORC-SROK DIAGRAM Stroke [mm] ±1% Nm ype Code Spring colour RD BLACK WHI YLLOW Detent in floating position and spring return to neutral from position 1 and 2 Floating position pulling the spool (Z type) 3 Floating position pushing the spool (W type) 4 1±1% Nm 1±1% Nm " " 12.±1% Nm 12.±1% Nm 6 FLOA 6 FLOA ype Code Main spring Detent spring RD BLACK BLACK BLACK ype Code Main spring Detent spring N-2/ /64

28 3.3.3 Detent in position 1 or 2 and spring return to neutral in both directions A pre-feeling (force increase) signals the operator that the detent position is going to be engaged " " 12.±1% Nm 12.±1% Nm 6 1±1% Nm 6 1±1% Nm ype Code Main spring Detent spring ype Code Main spring Detent spring RD BLACK RD BLACK With microswitch in floating position ±1% Nm 12.±1% Nm 1±1% Nm Current rating Voltage rating Connector lectrical life max. Mechanical life max. ype Microswitch specification.1 -. DC Amp VDC ackard Metri-pack 1. cycles - 7A/13. VDC. cycles - 1A/12 VDC. cycles - 3A/28 VDC. cycles Normally Open, ncapsulated with Wire Leads ype Code Main spring Detent spring Contact type 1±1% Nm / N-2/3.218

29 3.3. Microswitch positioners Spool movement detection Spool movement detection with detent posit. 22 1±1% Nm 22 1±1% Nm ±1% Nm ±1% Nm 6 12.±1% Nm 6 12.±1% Nm 1±1% Nm " Spool direction detection " 1±1% Nm " " D: microswitch operated in both directions 22 1±1% Nm S1: microswitch operated in OS ±1% Nm S2: microswitch operated in OS ±1% Nm Microswitch control Current rating.1 -. DC Amp 1±1% Nm " " Voltage rating Mechanical life emperature range VD C. cycles -3 to 12 C Switch ype Code Hydraulic scheme Description Connector type SA6 C C W Normally Closed, ncapsulated with Wire Leads ackard Weather ack SA6 O O W Normally Open, ncapsulated with Wire Leads ackard Weather ack SA6 O O M Normally Open, ncapsulated with Wire Leads, Convoluted nylon wire shield ackard Metri pack SA6 C C W I Normally Closed, Sealed erminals ackard Weather ack N-2/ /64

30 3.3.6 Manual positioner with spool sensor FORC-SROK DIAGRAM For sensor see section " " Force [N] Stroke [mm] ype Code lectro-magnetic detent positioners (MD) A pre-feeling (force increase) signals the operator that the detent position is going to be engaged Detent in position 1 Detent in position 2 12.±1% Nm 1±1% Nm 1±1% Nm 8 6 1±1% Nm " 12.±1% Nm " " " Coil operating features Nominal voltage 12 VDC ± 1% ower rating lectrical resistance when holding (2 C) Min. solenoid axial hold force 7 W 21 ± 1. Ohm 26 N Duty cycle 1% Standard cable length mm ype Code Spring Voltage Min. holding force Connector Detent position RD 12 VDC 137 N DUSCH D6-2S RD 12 VDC 137 N DUSCH D6-2S 1 3/ N-2/3.218

31 3.3.8 lectro-mechanic locking system With manual override Without manual override 3±1% Nm 24 3±1% Nm 24 1±1% Nm 1±1% Nm 6 12.±1% Nm 6 12.±1% Nm ±1% Nm ±1% Nm 1.9" " 3.41" " ype Code Colour Manual override YLLOW Y YLLOW N For types of coils see For other types of springs see section N-2/ /64

32 3.4 Direct acting ON-OFF control Body interface MAN 1±1% Nm " 4.24" Solenoid tube mechanical characteristics Max peak pressure Max static pressure 1 bar (14 SI) 2 bar (363 SI) In operating conditions for a proper functionality of the directional valve the tank line pressure cannot exceed 2 bar. ype Double acting ype Single acting port B ype Single acting port A For coils see section / N-2/3.218

33 3. Hydraulic controls (H) he standard position of positioner kits is on A port side Body interface MAN 3..1 Standard positioners max= 4 bar (8 SI) D D 12.±1% Nm 6 12.±1% Nm " 2.48" ype D Spring Code 2 1/4 BS os SA /4 BS SA Spring characteristic curves 3 Spring characteristic curves 6 ilot pressure [bar] ilot pressure [bar] Stroke [mm] Standard metering stroke Stroke [mm] Spools for specific applications/functions could have different metering strokes N-2/ /64

34 3..2 Floating positioners max= 4 bar (8 SI) 12.±1% Nm 4 D 6 D A " 2.48" 12.±1% Nm ype D Spring Code /4 BS SA Spring characteristic curve ilot pressure [bar] Stroke [mm] 12 Standard metering stroke Floating Spools for specific applications/functions could have different metering strokes Only for W spool applications 34/ N-2/3.218

35 3..3 Spool size metering curves - Spring type Flow [l/min] Spool metering: A B (inlet flow l/min) bar 1 bar 2 bar ilot pressure [bar] 3..4 Spool size metering curves - Sprin type 6 Flow [l/min] Spool metering: A B (inlet flow 7 l/min) bar 2 bar ilot pressure [bar] Spool metering: A B (inlet flow l/min) Spool metering: A B (inlet flow 7 l/min) Flow [l/min] bar bar 2 bar ilot pressure [bar] 2 Flow [l/min] bar 2 bar ilot pressure [bar] neumatic control he standard position of positioner kits is on A port side 1 2 Body interface 1/8 BS 1/8 BS 1±1% Nm 6 H ype Code " Operating conditions Hydraulic control: ressure range: min. 6 bar (87 psi) - max. 1 bar (217 psi) neumatic control: ressure range: min. 6 bar (87 psi) - max. 1 bar (14 psi) N-2/ /64

36 3.7 lectro-hydraulic open loop proportional / ON-OFF control (HO) he standard position of positioner kits is on A port side p Complete scheme Simplified scheme p Standard version Standard version 1 2 p 1 2 p p p Shuttle version Shuttle version e e p 1 2 p 1 2 p p p p Standard version Deutsch Standard version AM Shuttle version 12.±1%Nm 6 4±1%Nm 12.±1%Nm " e " " e " " 2.89" Body interface A B H HO positioner spring curve 6 ype Code Voltage (VDC) Connector 31B AM 311B AM 312B 12 Deutsch Version Standard ilot pressure [bar] B Deutsch B Deutsch Shuttle Stroke [mm] Standard metering stroke Spools for specific applications/functions could have different metering strokes he pressure differential between pilot lines p and p should be > 2 bar in order to be sure to switch the spool to full stroke in all operating conditions 36/ N-2/3.218

37 ctro-hydraulic specifications 12 V 24 V Nominal flow rate 4 l/min (1 GM) Max pilot pressure 4 bar (8 psi) Max pilot lines back pressure 1 bar (14 psi) Rated supply voltage 12 VDC 24 VDC Current supply characteristic WM (ulse width modul.) Maximal current 1±1 ma 7±1 ma Superimposed dither frequency 1 1 Hz Degree of protection AM I6 / Deutsch I69K p filter screen 12 μm Coil resistance 4.7 Ohm ±% 2.8 Ohm ±% Response time < ms Leakage from p to p < 3 cc/min. at 3 bar and C (<.9 cu:in./min. at psi and 176 F) Duty cycle D 1% Connector ype AM Junior timer (AM ) / DUSCH D4-2 Connector colour MOSSY-GRY BLACK Code (*) (DUSCH) (DUSCH) (AM) (AM) (*) nr. 2 screws M4x12 are not included Spool metering curves 12 V Spool metering : A B (inlet flow l/min) 7 Spool metering: A B (inlet flow 7 l/min) Flow [l/min] bar 1 bar Current [A] Spool metering curves 24 V 1.3 Flow [l/min] bar bar Current [A] 1.3 Spool metering: A B (inlet flow l/min) Spool metering: A B (inlet flow 7 l/min) Flow [l/min] bar 1 bar Current [A].7 Flow [l/min] bar bar Current [A] N-2/ /64

38 3.8 lectro-hydraulic proportional control with lever option (HM) he standard position of positioner kits is on A port side ype Code Voltage 39B - 12/24 V DC V mm Lever side Body interface ositioner side Body interface p p p p MAN H Coils not included (see 6.1.3) Option (see 6.2) " A special body is requested. 38/ N-2/3.218

39 3.9 Levers he standard position of lever kits is on B port side Free end spool with dust proof seal ype Code L " 9.3" 8.31" 18.71" 1±1% Nm Standard lever group ype Code L1 L floating stroke 1-2 standard stroke L M1x1. 4 L3 Body interface M1x " " " MAN " ±1% Nm Lever stick Lo ype Code mm inches AL AL AL AL M1X1. Lo N-2/ /64

40 3.9.3 Standard joystick control (L ) ype Code L133 L ±1% Nm B1 B2 1±1% Nm Body interface 13 MAN pivot 17 M12x1.7 threaded hole " M12x1.7 ype Code AL M12x1.7 Lo=2 ivot L133 L134 L133 L A B2 A2 B " 12.8." B1 A1 B1 A ".29" 4/ N-2/3.218

41 3.9.4 Joystick control with integrated locking system (L26-46) ype Code L26 L pivot B1 B2 1±1% Nm Body interface MAN 13 18±1% Nm L26 A1 A2 B2 Locked M12x17 Unlocked M12x1.7 B1 min max min. 4.82" max..4" L46 B2 B1 A1 M12x1.7 A2 min min. 4.82" N-2/ /64

42 3.1 Anti-cavitation valves (C) 1 3±1% Nm A/B ype Code C (plug) ±1% Nm A/B ressure [bar] Flow [l/min] 3.11 Anti-shock and anti-cavitation valves (UC) ressure [bar] ressure [bar] A/B 1 3±1% Nm Antishock Flow [l/min] Anticavitation Flow [l/min] 3 bar 26 bar 23 bar 2 bar 16 bar 8 bar IMORAN!: he UC anti-shock valve is designed to absorb shock effects. herefore, it should not be used as pressure relief valve Setting/1 ressure setting at 1 l/min (*) bar (psi) Code 4 4 (8) (87) (11) (116) (13) (14) (19) (174) (188) (23) (217) (232) (246) (261) (27) (29) (34) (319) (333) (348) (362) (377) (391) (46) (42) (43) (464) (plug) (*) For different pressure settings please contact our Sales Department 42/ N-2/3.218

43 4 Intermediate sections 4.1 Intermediate inlet with relief valve (K84) 27.±2. Nm " " " 2 1/2 BS " 2.8" 2.4" " " 14.71" p p p p 4 1.7" 2.78" 1..61" RV (see 2.3.1) RV N-2/ /64

44 nd covers.1 nd cover without pilot lines (M) 4 OIONAL HC/ " 3 HC plug " 38 1." " " " 2.3" " " 2.99" " " 1.81" 22.87" 1..41" 3 Standard ype HC HC/ 3 4 (Optional) M 21 M 211 3/4 BS 3/4 BS - M 22 M 212 3/4 BS 3/4 BS 3/4 BS M 31 M 311 SA1 SA1 - M 32 M 312 SA1 SA1 SA1 M 1 M 11 M22x1. M22x1. - M 2 M 12 M22x1. M22x1. M22x1. Standard 3 HC 3 HC 4 (option) 4 (option) 44/ N-2/3.218

45 .2 nd cover with pilot lines (H) 4 OIONAL HC/ p 3 HC plug " 38 1." " " " " 2.87" ".87" p 2.3" 1.2" 1.18" 1.81" Ø1..41" 3 Standard ype HC HC/ p 3 4 (Optional) H 21 H 211 3/4 BS 1/4 BS 3/4 BS - H 22 H 212 3/4 BS 1/4 BS 3/4 BS 3/4 BS H 31 H 311 SA1 SA6 SA1 - H 32 H 312 SA1 SA6 SA1 SA1 H 1 H 11 M22x1. M14x1. M22x1. - H 2 H 12 M22x1. M14x1. M22x1. M22x1. p p Standard 3 p p p HC 3 p HC 4 (option) 4 (option) N-2/ /64

46 .3 nd cover with pilot lines and pilot oil supply pressure reducing valve (H) VR (see.) VC (see.6) HC plug " " " p " 1.97" " " 22.87" " " " DIA " " Standard ype HC HC/ p 3 4 (Optional) H 23 H 213 3/4 BS 1 / 4 BS 3/4 BS - Standard HC VC VR VR VR p p p p p p HC p p p VC 46/ N-2/3.218

47 .4 Upper HC kit.4.1 M/H standard type (with 4) HC fitting HC fitting " " 38 1." " " 1.38" " 4.79" M HC lug p p H HC p Ø1..41" DIA lug ".4.2 H standard with VR type HC fitting 4 HC fitting " lug " " H with VR (*) HC " " VR " 22.87" " p p p Ø1..41" DIA lug " (*) the tank port in the inlet cover must be used N-2/ /64

48 . ressure reducing valve (VR) + 4 Nm 22 Filter p p " ype Code Nominal pressure ( bar) VR ressure Vs. Flow Curve p (Fully open) ressure Vs. Flow Curve p (Reducing) p [bar] p [bar] Flow [l/min] Flow [l/min] p [bar] ressure Vs. Flow Curve p (Relieving) Flow [l/min] 48/ N-2/3.218

49 .6 Back pressure valve (VC) 38 ±1% Nm /4" BS 1.44" ype Code Nominal pressure ( bar) VC p [bar] VC characteristic curve (cartridge valve only) Valve set at 1 bar with 1 l/min Flow [l/min] N-2/ /64

50 6 Additional electric and electronic devices 6.1 Coils and connectors Solenoid valve coils (Ø13) DIN 436-A/ISO44 connector AM J connector ".96" ".1" " " " " ".6" 1.42" For mating connector see AM J connector Deutsch D4-2 connector " " ".1" " 2 2." " " " ".6" " ".6" 1.42" For solenoid valve series Wire class H (VD8) Duty cycle D 1% Voltage tolerance ± 1% Connector style DIN AM AM + DIOD D ype I Code Nominal coil voltage (VDC) ower (Watt) Current consumption at 2 C (Ampere) Resistance at 2 C (Ohm) 12 H H A A A D A D D D / N-2/3.218

51 6.1.2 ON-OFF positioner coils (Ø19) DIN 436-A/ISO44 connector Deutsch D4-2 connector " 1.18" ".7" " Ø " DIA " " Ø " DIA " " For mating connector see AM J connector " " " Wire class For solenoid valve series H (VD8) Duty cycle D 1% Voltage tolerance ± 1% Magnetic frame protection Fe/ZnNi/Cn/ (DIN 979) Ø "DIA " " 1 2 Connector style ype I Code Nominal coil voltage (VDC) ower (Watt) Current consumption at 2 C (Ampere) Resistance at 2 C (Ohm) DIN AM D 12 H H A A D D N-2/ /64

52 6.1.3 HM positioner coils (Ø19) DIN 436-A/ISO44 connector " 1.6" For solenoid valve series Wire class H (VD8) Duty cycle D 1% Voltage tolerance ± 1% " " 1.97" 1 2 For mating connector see Connector style DIN ype I Code Nominal coil voltage (VDC) ower (Watt) Current consumption at 2 C (Ampere) Resistance at 2 C (Ohm) 12 H H / N-2/3.218

53 6.1.4 DIN436-A/ISO44 connector ype Code DIN436-A/ISO For power input D.C. Number of poles 2 + Supply voltage max. 22 V. Nom. capacity at contacts 1 A. Max capacity at contacts 16 A. Resistance at contacts 4 mohm 2 Max section of cable 1. mm 2 Outer material Contact mount material Glass fibre reinforced Nylon " " 2 1 Color Black Armour clamp g 9 Ø cable 6-8 mm. rotection factor I6 (DIN4) Insulation class C (VD11) " emperature range -4 / +9 C o be ordered separately, not included in the coil N-2/ /64

54 6.2 Spool position hall effect sensor roportional Connector style ype Codes AM S A Deutsch S D lectrical Connections 1. Vcc - Blue 2. Gnd - Green/Yellow 3. roportional Output - Brown 4. n.u. - Black Amp seal, 4 male pins Deutsch D4-4 Mechanical specifications Maximum mechanical stroke xternal diameter Body lenght Cable lenght (including connector) Maximum operating pressure Operating temperature range ±8. mm 3 mm 91 ± 8. mm 3 mm Ma (bar) -2 C / +1 C rotection class I 67 lectrical specifications - Linear, Hall-effect sensor ower Supply Voltage Current Consumption 7 32 Vdc < 2 ma Output signal in Neutral Output signal range olerance on output signal 2. V 1 V 4 V ±.1 V Maximum linearity error (-2 1 C) ± 2% Max. lectrical stroke linearity range Insulation resistance Statistical data (reliability) MFd DC ± 7. mm (adjustable) > V 127 y low Output voltage signal (V) Output signal control characteristic (proportional version) xtend Retract Spool stroke (mm) Red lines: -2 / +8 C Green lines: 8 / 1 C 4/ N-2/3.218

55 6.2.2 ON-OFF Connector style ype Codes AM OS A lectrical Connections (proportional version) 1. Vcc - Blue 2. Gnd - Green/Yellow 3. OU A (Retract) - Brown 4. OU B (xtend) - Black Mechanical specifications Maximum mechanical stroke xternal diameter Body lenght Cable lenght (including connector) Maximum operating pressure Operating temperature range ±8. mm 3 mm 91 ± 8. mm 3 mm Ma (bar) -2 C / +1 C rotection class I 67 Connector Amp seal, 4 male pins Retract Mechanical life Million cycles xtend lectrical specifications - Linear, Hall-effect sensor ower Supply Voltage 7 32 Vdc Output signal control characteristic (proportional version) Current Consumption Output signal (inactive) Output signal (active, external pull-down) Switching threshold Hysteresis on switching threshold Insulation resistance Statistical data (reliability) MFd DC < 2 ma > VBA-1 V < 1 V 1 mm.3 mm > V 127 y low Output voltage signal (V) VBA open xtend -1 mm ZRO +1 mm Spool stroke (mm) Retract - NURAL OSIION: Out A,, Out B to VBA, - XND (stem entering in the sensor): Out A (blue) to VBA, Out B (red) goes open. - RRAC (stem exiting from the sensor): Out B (red) to VBA, Out A (blue) goes open. - he hysteresis keeps the switching threshold more stable VBA open N-2/3.218 /64

56 6.2.3 xamples 6/ N-2/3.218

57 7 Suitable applications (examples) 7.1 Wheel loaders RV1 2 p p p B A B A B A B A BUCK BOOM AUX AUX2 p p p p p p 3 p p p p p N-2/ /64

58 7.2 elehandlers 2 RV1 p p p p p p p p p 3 p B A B A B A B A B A BOOM IL XND AUX ROAION p p p p p p p p 8/ N-2/3.218

59 7.3 Forestry & Backhoes N-2/ /64

60 8 Composition of ordering code 8.1 Inlet cover S 2 1 M 1 1 B L A 1 2 A - O X X Inlet cover type (see section 2.1.1) Lever side: RV or B valves Y - GR - BL = RV setting range (see section 2.3.1) C - A - C - A = B valve (see section 2.3.2) H = BH valve (see section 2.3.3) VC = plug ositioner side: RV or B valves Y - GR - BL = RV setting range (see section 2.3.1) C - A - C - A = B valve (see section 2.3.2) H = BH valve (see section 2.3.3) VC = plug Solenoid type and voltage (see section 6.1.1) 1 port (optional) = not present 1 = present, open (same thread type as - see section 2.1.1) XX = plugged Gauge port (optional) = not present M = present, open (see section 2.1.1) XX = plugged ilot tank line check valve (see section 2.3.) = without pilot lines M = external drain (internally plugged) C = internal drain (externally plugged) port XX = plugged O = open port XX = plugged O = open xamples S 21 M11 BL A 12A- O XX S 21 H12 C Y 24AD 1 XX C O O 6/ N-2/3.218

61 8.2 Valve sections H D S 2 1 K 1 1 A S 3 9 L I Body type (see sections or 3.1.4) Spool type (see section 3.2) ositioner type (see section 8 ) Lever type (see section 3.9 ) Valve A port (see section 3.1 and 3.11) 2 = UC valve adjustment pressure (setting/1) = plug C = anticavitation Valve B port (see section 3.1 and 3.11) 2 = UC valve adjustment pressure (setting/1) = plug C = anticavitation ositioner kit side indication Omitted with positioner kit on A port - standard position I = positioner kit on B port - inverted spools Additional information ON-OFF controls solenoid (see section 6.1.2) lectro-mechanic locking solenoid (see section 6.1.1) Microswitch positioners (see section 3.3.) ositioners with sensor (see section 6.2) HM control solenoid (see section 6.1.3) xamples K11 W 1 2 C K17 AS 31B N-2/ /64

62 8.3 nd cover C O 2 1 M nd cover type (see section ) Standard HC Standard with VR HC with VR /HC port Standard (with/without VR) type = open XX = plugged HC type HC = purely HC (open) CC = closed centre VC12 = with VC (12: spring setting in bar) needed with VR valve only. 3 port 3 = open XX = plugged HC = with upper HC kit (optional) 4 port (optional) = not present 4 = present, open (same thread type as 3 - see section ) XX = plugged p port = not present = present, open (see section ) XX = plugged ilot supply pressure reducing valve VR = not present 32 = pressure reducing valve adjustment in bar (see section.) XX = plugged xamples CO 21 M212HC XX 4 CO 21 H213 VC / N-2/3.218

63 8.4 roduct identification plate ***** MAD IN IALY : BHR roduct Order Code 2 : Customer Code (on demand, only - if not requested manufacturing year and month are printed) 3 : WO : roduction Work Order 4 : WO progressive number Manufacturing Manufacturing year month January 7A 8M 9M M 1M 2M February 7B 8N 9N N 1N 2N March 7C April 7D 8Q 9Q Q 1Q 2Q May 7 8R 9R R 1R 2R June 7F 8S 9S S 1S 2S July 7G August 7H 8U 9U U 1U 2U September 7I 8V 9V V 1V 2V October 7J 8Z 9Z Z 1Z 2Z November 7K 8X 9X X 1X 2X December 7L 8Y 9Y Y 1Y 2Y N-2/ /64

64 by Bucher Hydraulics S.p.A, I Reggio milia All rights reserved. Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. he information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual improvement, we reserve the right to amend the product specifications contained in this catalogue. Classification: / N-2/3.218