Hydraulic Units UP40. Reference: 200-P EN-00 1/44. Issue:

Transcription

1 Hydraulic Units Reference: -P-9937-EN- Issue: 3.6 /44

2 Contents Page Power pack housing Technical information Housing K (Uni-directional version) Housing K4 (Uni-directional version) Housing K Reversible... Gear pumps.... Technical information.... Gear pumps AP/** S439 - Counterclockwise rotation In combination with K - KG - K4 housings Gear pumps APR/** -S439 - Reversible In combination with K - KG housings Tanks Technical information Suction assembly. Standard version S439 Ø4 for vertical and horizontal positions... Electric motors D.C. Electric motors Drives Couplings Cartridge valves Introduction Pressure relief valves Solenoid operated directional valves Manual lowering valve Manual override valves Emergency hand pump: PM87/ Solenoid valves Other valves Valve cavity plugs Example of hydraulic power pack ordering code /44 -P-9937-EN-/3.6

3 General specifications Experience acquired in designing mini power packs, and a research effort aimed constantly at satisfying the technical specifications of our customers: these assets have provided the principal resource for development of the power packs: - compact dimensions achieved through detailed analysis of the geometries involved, and the components used; - economy of the manufactured product, gained by adopting innovative technologies and by standardizing valve cavities with those of the major hydraulic components manufacturers; - the assurance of constant quality, thanks to comprehensive control on materials and production cycles. Power packs are widely used in mobile applications. The is suitable for applications where short operations and middle-high pressure are required. Invalid Lift Equipment is a good example, where the compactness of the unit is a particular advantage in view of the limited space available. The need for fluid power in mobile machines means that power packs can be exploited in the widest variety of applications: lift platforms, and equipment for handling high and bulky loads in general. -P-9937-EN-/3.6 3/44

4 WARNING! Bucher Hydraulics is not responsible for misuse or misapplication of product. Pressure values, type and number of cycles have to be considered before choosing the type of product. For any question about applications, please contact Bucher Hydraulics. All the installation and maintenance operations of partially completed machinery must be made by technically competent personnel. The hydraulic power units due to its construction does not perform the function of the safety component. So the user must insert safety components into the machine to protect against the possibility of breakage during operation. The hydraulic power units can not function independently and are designed to be integrated into hydraulic systems. Fluids should be contained and disposed of properly. Prior to performing any maintenance make sure the equipment is turned off and that any stored energy, for example pressure, is released. Also, extended equipment or cylinders should be lowered and mechanically locked as required. During the handling of the hydraulics power units, do not lift the unit by the valves mounted on it (see the figure, the arrows indicate the points to lift). Always wear appropriate safety gloves and footwear. Wait if the motor is hot. Always wear eyes protection and protective clothing when working on and around hydraulic systems. Remove jewellery and objects that might conduct electricity while working on power units. Hydraulic fluid does pose a fire hazard, can cause burning or skin irritation if not properly handled. Fluid under pressure can pierce the skin and enter the bloodstream causing death or serious injury. Devices being operated by the hydraulic system should be immobilized so they cannot move and cause injury while being inspected or repaired. Disconnect from electrical source. The above warnings are to be adhered to in order to reduce the risks resulting from the normal usage of the hydraulic power units for the safety and health of the users. The product you have purchased is guaranteed for a period according to existing regulations. The warrant will be void if the product has been installed or used in a manner not in accordance with our instructions, or if it was tampered with, modified, subjected to usage outside those prescribed. Fig. Directives and standards - PED (97/3/EC) The pressure relief valve assembled into the power pack can not to be considered and/or confused with the safety valve when the PED Directive is applied to the hydraulic system. - Atex: The equipment and protective systems of these catalogue ARE NOT intended for use in potentially explosive atmospheres that is to say where there is an explosive atmosphere. Ref: Directive 99/9/EC and Directive 4/34/UE. - ISO 9:8 / ISO 4:4 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 operating blocks for hydraulic applications. Further information are available in the dedicated documentation according to the Machinery Directive 6/4/EC 4/44 -P-9937-EN-/3.6

5 Sub-assembly index O-Rings kits 7 Relief and check valves 7 Cartridge valves/integrated controls External connection (under pressure) Pumps Electric motors 6 Couplings / Drives 3 Oil tank 4 Suction/return assembly kits and accessories Front housing Rear housing Sub-assemblies making up power pack This page serves both as a guide to the contents of the catalogue and as an order form. Simply fill in the individual sections with the designation codes for the options selected, and send direct to the Bucher Hydraulics S.p.A. Sales Centres. 3 Type of housing Pump Series Tank Fitting Pos. Customer Qty. - sample Qty. - batch 4 6 Suction assembly kit Drive Electric motor Pos. Relay Pos. Cavity b Cavity Fill in this section only when ordering single sub-assemblies. Leave blank when ordering complete power packs. c 7 Cavity Cavity e d - - Hand lever Lever stick Volt -P-9937-EN-/3.6 /44

6 Power pack housing. Technical information.. Materials Housing: aluminium bar. Seals: Buna N.. Maximum operating pressures bar is the maximum intermittent operating pressure resulting from test, though higher values are possible subject to approval by Bucher Hydraulics Engineers Dpt...3 Pumps The body versions are intended for use with: Single pump AP S.439 CCW rotation. Single pump APR 439 reversible rotation..4 Valves cavities Standard cavities will allows 3/4-6 UNF cartridge valves manufactured by Bucher Hydraulics S.p.A., which are interchangeable with similar components made by major European and US manufacturers. The only exception are the check valve, the flow regulator and pilot check valve that are realised according Bucher Hydraulics standard. A variety of hydraulic circuits can be obtained with the same housing. To facilitate the correct composition of the desired hydraulic circuit, the position of each cavity is identified by a letter. The combination letter/cavity position remain unchanged for all the various housings... Non-standard symbols used in the text Tools required..6 Recommended tightening torques Port... Nm Standard: /4 BSP... 3 Note: other threads on demand +7 - Dimensions example: K. l tank capacity " " 8 3." 8 7.9" 8.7".87" 8 3." ".8".9".8" 6.4" 6/44 -P-9937-EN-/3.6

7 . Housing K (Uni-directional version) FRONT HOUSING K P out = /4 BSP Cavity b = relief valve cavity " n. fixing holes M6 usable thread 9 mm Fixing side 8 3." "." Relief valve b P out P out b Relief valve side 8.4.3" 48..9" 8 3." 6." b.47" 6.63" 4.7"..8" Motor side Pump side Filler cap 4.7" n. fixing holes M6 usable thread 9 mm REAR HOUSING KG P in = /4 BSP A out = /4 BSP Cavity c = 3/4-6 UNF Cavity d = 3/4-6 UNF Cavity e = /4 BSP 8 3." 8.7".87" P in " 8 3." P in A out A out 4.7".98" e.9".9" 4.7" c d Tank side 4.7" " Type K - KG Ports /4 BSP Type of housing U P 4 K + K G -P-9937-EN-/3.6 7/44

8 FRONT HOUSING K interface Relief valve VM Filler cap Check valve SPD87/-TV (STANDARD) b SDFE87/-TH SDF87/-TH SPFE87/-TH REAR HOUSING KG interface for complete valves circuits e SPF87/-TOV c d VRC valve Plug (option gauge port) SPFE87/-TOV NV/87-R T87/ SDFE87/-TH Emergency hand pump (standard position, only in this cavity) PM87/. Special housing required (please contact our Sales Dept) ZR87/-...Z87/HS Realizable schemes A e A e A e A e Ò Ö Ò Ò Ò ÒÒ Ò Ò Ö Ö Ö Ö For the availability of new or dedicated hydraulic schemes, please contact our Sales Department. 8/44 -P-9937-EN-/3.6

9 .3 Housing K4 (Uni-directional version) FRONT HOUSING K P out = /4 BSP Cavity b = relief valve cavity " n. fixing holes M6 usable thread 9 mm Fixing side 8 3." "." Relief valve b P out P out b Relief valve side 8.4.3" 48..9" 8 3." 6.63" 6." b.47"..8" 4.7" Motor side Pump side Filler cap REAR HOUSING K4G P in = /4 BSP A out = /4 BSP Cavity c = 3/4-6 UNF 4 ways cavity (solenoid valve) Cavity d = 3/4-6 UNF 4 ways cavity (check valve) 4.7" 8 3." 8.97".9 n. fixing holes M6 usable thread 9 mm 3." P in A B B A P in 8.87".7" c d Tank side 3.7." 9.4".9" 76.99" " " Type K - K4G Ports /4 BSP Type of housing U P 4 K + K 4 G -P-9937-EN-/3.6 9/44

10 FRONT HOUSING K interface Check valve Filler cap Relief valve VM Realizable scheme A B b ÒÒ ÒÒ Ö REAR HOUSING K4G interface for complete valves circuits A () B (4) Dual pilot to open, Poppet-Type check valve c d P-T ()P-T (3) 3 4 A B CB- b a P T A B CC- b a P T CA- Solenoid valve A B CD- CX- b b a a P T A B P T T B P A For the availability of new or dedicated hydraulic schemes, please contact our Sales Department. /44 -P-9937-EN-/3.6

11 .4 Housing K Reversible A B () A FRONT HOUSING K () B () REAR HOUSING KG () T P P T 4.7" 6.63" " 3." 3.4..".6" Filler cap ".69" 8 3." 8 3." 3.8" A B 9.7" 3.".98"." 6.63" 4..7" 6.".8" Fixing side 8.43".9".9" 4.".9" 4.7" 3." 4.7" Relief valves side 7.8" b b e B Motor side Pump side Tank side A Port side FRONT HOUSING K () interface REAR HOUSING KG () interface Relief valves VM Dual pilot check valve to open Filler cap Type K+KG Ports /4 BSP Type of housing U P 4 K + K G -P-9937-EN-/3.6 /44

12 +6 Gear pumps. Technical information.. Material Covers: Pressure diecast aluminium alloy Body: Extruded aluminium alloy Gears: Casehardened and hardened steel. Bearings: Aluminium alloy. Seals: NBR. AP/** S439.. Suitable fluids Only mineral oil based hydraulic fluids responding to ISO/ DIN standard should be used. Viscosity range: recommended - mm /s (cst) admitted up to 7 mm /s (cst) Operating temperature range: - +8 C For other fluids consult our Sales Department. M M P V ATTENTION!: Use of pumps at temperatures above 8 C must always be agreed upon with our Technical Office, and in any case this can cause a significant worsening in the volumetric efficiency. For use under conditions different from those indicated in this catalogue, please contact our Sales Department...3 Inlet M M Absolute pressure at the pump inlet must be: V >.7 bar ( PSI) P..4 Outlet The recommended delivery pipe oil speed is between: V = - m/s. M /44 -P-9937-EN-/3.6

13 . Gear pumps AP/** S439 - Counterclockwise rotation In combination with K - KG - K4 housings L STANDARD AP/***-S439 P S Suction port located in the back cover Ø4 T counterclockwise rotation p (bar) P3 Mx DIN Nm Outlet: Pressure levels: P = continuous operating pressure P = intermittent operating pressure P3 = peak pressure P P t (s) max. s Example Pump Series A P /, S Standard version AP Pump type S439 Displacement cm 3 / rev in 3 / rev Order code Max. pressure L P P P3 mm in bar PSI bar PSI bar PSI P< bar n. min. P> bar n. max. P>P AP/. S AP/. S AP/.7 S AP/.9 S Gear pumps APR/** -S439 - Reversible In combination with K - KG housings P P R T Reversible rotation APR Pump type S439 Displacement cm 3 / rev in 3 / rev Order code Max. pressure L P P P3 mm in bar PSI bar PSI bar PSI P< bar n. min. P> bar n. max. P>P APR/. S APR/. S APR/.7 S APR/.9 S P-9937-EN-/3.6 3/44

14 3 Tanks 3. Technical information Materials: aluminium. Color: Aluminium (Standard) Condition of use: Suitable fluids: mineral oil based hydraulic fluids responding to ISO -DIN standards. Hydrocarbon based fluids (e.g. benzene, benzol, etc.) must not be used. Versions: tanks are available in different capacity, allowing installation of the power pack in horizontal or vertical positions (see note). ATTENTION!: Whilst the fixing and sealing systems are designed for operation under the most heavy-duty conditions, the unit must be securely anchored when fitted to mobile equipment. Bucher suggests to protect the nearest environment toward eventual oil leakage that may occur. Ø8 3." DIA L L Horizontal position P only Fixing side Vertical position P Fixing side IMPORTANT!: Other horizontal positions are not admitted due to suction filter and filling plug. The opposite position of P is not possible. For P position, before the assembling, might need filling the tank with a proper syringe or similar device. Nominal capacity Type/Code L K-K4-K L K Suction capacity l cu inch Type/Code mm in mm in mm in Horizontal Vertical. 3. L-R L-R L-R For other types of tanks capacity please contact our Sales Department. 4/44 -P-9937-EN-/3.6

15 4 Suction assembly. Standard version S439 Ø4 for vertical and horizontal positions L Ø63 Ø4 Suction steel filter: 3μm nominal wire mesh Nom capacity L Type/Code l cu inch mm in. 3. L-R L-R L-R For the combinations of the suction assembly kits for other tanks, horizontal/vertical positions please consult our Sales Department. -P-9937-EN-/3.6 /44

16 Electric motors Electric motor available:. D.C. motors Generally used for mobile applications. D.C. Electric motors.. Technical information Available versions: Voltage: -4 V Power rating:..8 kw. For different input voltage and power rating, consult our rotation, suitable for driving counterclockwise pump. Type of winding: D.C. motors can be manufactured in different types of field windings: Sales Department. - Permanent magnets (STANDARD) Direction of rotation: - Series Unless otherwise stated, all motors are specified clockwise - Compound Permanent magnets Series Compound M M M Insulation class: The class of electric insulation reflects the maximum temperature the motor can register during operation without damage to the insulating material internally of the motor itself. The following table indicates insulation classes to CEI -6. Class Y A E B F H Temperature ( C) Type of duty: To ensure selection of the electric motor best suited to a given set of operating conditions, the duty cycle needs to be verified. Duty cycles S, S and S3 are defined below in accordance with CEI -3 Continuous duty S Short time duty S Intermittent duty S3 P P t d P t d Continuous duty S: Operation on-load (steady conditions) for a period of indefinite duration, during which the motor reaches thermal equilibrium without exceeding the maximum permissible temperature. Short time duty S Operation on-load (steady conditions) for a period of limited duration, denoted td in the diagram, during which maximum permissible temperature is reached, followed by an off-load period of duration sufficient for the temperature of the motor to return to ambient temperature. Intermittent duty S3 A sequence of identical cycles, each minutes in duration, the single cycle comprises a period of operation on-load td, during which the motor may reach its maximum permissible temperature, is reached, followed by an off-load period of limited duration tm, insufficient for the temperature of the motor to return to ambient temperature. The value of S3 indicates the duration of the on-load period td in relation to the overall cycle time tp, as a percentage. t C T max C T max C T eq P = load Teq = temperature at thermal equilibrium Tmax = maximum permissible temperature Tl = operating temperature T a t T a Tmax t t t Ta td tm tp t p t m t T l T a S3 = = ambient temperature = duration of on-load period = duration of off-load period = duration of cycle ( min.) t d t d + t m x 6/44 -P-9937-EN-/3.6

17 Degree of protection: This indicates the level of protection afforded in preventing contact between live parts of the motor and people or foreign matter generally, and preventing the penetration of water. IP 4 4 The degree of protection is indicated in accordance with CEI -6 by the initials IP and two identifying digits: Example: Denotes protection factor first digit second digit The first digit indicates the degree of protection afforded to the motor against contact with people or foreign bodies. The second digit indicates the degree of protection afforded to the motor against the effects of penetration by water. no protection no protection protection against solid bodies measuring > mm protection against water dripping vertically protection against solid bodies measuring > mm protection against water dripping at max 3 protection against solid bodies measuring >. mm 3 protection against rain 4 protection against solid bodies measuring > mm 4 protected against water splash protection against dust protected against water spray.. Characteristic curves Characteristic curves are given for each motors, from which to establish pressure, flow rate and current consumption 8 values, and S and S3 duty cycles. I (A) 8 (l/min.) S S3 Q P (bar)..3 Example of how the graphs are used S (min) S3 (%) Required data Flow rate Q = 3 l/' Pressure p = bar Pump displacement Determined by the intersection of the required p and Q curves. In the example indicated, pump AP/.7 has the required p and Q specifications. In the event that there is no point of intersection with any curve, a displacement as near as possible to the required flow rate should be selected. Current consumption This is determined by taking a vertical line from the pressure value to its point of intersection with the I curve corresponding to the selected displacement. In the example illustrated, current consumption is: I = 4 Ampere Type of use Having established the current, the relationship of the S and S3 curves will give the following values: S = 6 min. S3 =.% Terminals Unless otherwise stated, d.c. motors supplied by Bucher Hydraulics S.p.A. have two terminals. Poles are identified in accordance with IEC34-8 A - A Armature D - D Series B - B Poles E - E Parallel Electric diagram A typical arrangement for connection of the motor to the power supply is shown in the diagram. -P-9937-EN-/3.6 7/44

18 ..4 Mounting directions The tie bolts must not be withdrawn completely while fitting motor, but retracted just for a short distance (3- mm max). Once fitted to the power pack, the motor should be run off-load momentarily ( seconds max) to verify its correct operation: supply power to the windings and measure the current drain, which must not exceed 3 Ampere. Power cable The wire selected for power connections must be of cross section appropriate for the rated current of the motor. Tightening torques When assembling the motor and power pack and securing the wires of the power cable to the motor terminals, observe the tightening torque values indicated. Brush life The brushes will wear down progressively with continued operation of the motor, and must be replaced when reduced to their minimum useful length. Since the rate of wear on the brushes is dictated by the operating conditions and cannot therefore be broadly specified, consult our Sales Department for guidance D, E + - A, E Bucher Hydraulics S.p.A. is not an electric motors manufacturer so these components come from third part. Bucher Hydraulics S.p.A. reserves the right to change the motor supplier whenever considers it necessary without notice M 8/44 -P-9937-EN-/3.6

19 .. Starter Relays - Technical information Versions: Available voltage: -4 V See relative table for technical data for: - Electrical insulation class - Type of duty - Protection factor: The level of protection is defined according to the same parameters as listed for electric motors. Contact life: The contacts of the relay will wear down progressively during operation. Since the rate of wear is dedicated by the type of duty and cannot therefore be broadly specified, consult our Sales dept. for guideline information. Nm Fitment to electric motor Starter relays can be fitted to the frame of the motor by a metal clip. The relay is secured by means of a clip encircling the motor frame and inserted through special slots in the feet of the relay itself. In this instance, several mounting positions are possible. Electrical diagram A typical arrangement for connection of the relay to the electric motor is shown in the diagram D, E A, E M Fixing with clip Electric diagram Heavy duty (STANDARD for wide range of DC el. motors) 4.6 (.64") Weight:.37 kg 7. (.3") (.") 3 (.9") 6.4 (.7") Ø63. (.") 38 (.49") 9 (.4").7 Nm 4 Nm 3 74 (.9") Voltage V 4 V 7 Type R9 R Code (.") 7 (.83") 9.7 (3.6") 3. (4.47") Amps Consumption by the coil. A. A Current for continuous duty A Max. current ( sec.) Protection index 8 A IP66 Insulation class F -P-9937-EN-/3.6 9/44

20 Voltage Nominal Power V W 4 V W Protection index:... IP4 Insulation class:... F Type of winding:... Permanent magnets Rating output power... : W Character of work:... S min, S3 7% Weight:. Kg (4.96 lb) 9 (.748") x M6 A+ A- Nm (7.") 36.9 (.39") (.79").4 (.") 4. (.96").3 (.46") 6.4 (.3") Ø.7 (.68" DIA) Ø63.4 (.496" DIA) 9.4 (3.6") 3.4 (.76") Rotation reversible Attention! Utilising unidirectional pump, verify the electrical connection. The motor must rotate clockwise (CW) Motor Motor with relay Rotation Reversible V - W 4 V - W Type CPD/C CPD/C Code Relay Relay type Motor mounting position Standard positions S A Relay standard position F A+ A- A+ Electric motor C P D / C Example Relay Pos. S Pos. /44 -P-9937-EN-/3.6

21 V - W (l/min.) Q I (A) 7 7 P (bar) 4 V - W (l/min.) 4 6 Q I (A) P (bar) -P-9937-EN-/3.6 /44

22 Voltage Nominal Power V 8 W 4 V 8 W Protection index:... IP4 Insulation class:... F Type of winding:... Permanent magnets Relay fixing kit Minimum brushes length:... mm (. inches) Ø 89. (3.") Nm Ø8 (3.3") (.4 ) M6-6h. (.8") A+ A-. (6") 4. (.9") 6.43 (. ) Ø (.9") Rotation reversible Attention! Utilising unidirectional pump, verify the electrical connection. The motor must rotate clockwise Weight: 3.7 Kg (8. lb) Motor Motor with relay Rotation reversible V-8W 4V-8W V-8W 4V-8W Type C8PK/A C8PK/A C8PK/A + R9 C8PK/A + R Code Relay Standard Relay type R9 R Motor mounting position Standard positions S A Relay standard position F A+ A- A+ Electric motor C 8 P K / A Example Relay R Pos. S Pos. F /44 -P-9937-EN-/3.6

23 V - 8 W I (A) (l/min.) 4. Q 3 8 S S S (min) P (bar) 4 V - 8 W I (A) 3 S3 (%) (l/min.) Q 3 4 S S3. P (bar) S (min) S3 (%) -P-9937-EN-/3.6 3/44

24 6 Drives 6. Couplings E6 6 (.4") C B A (.") D Motor type Drive system Coupling code Dimensions A B C D CPD CPD C8PK C8PK E /44 -P-9937-EN-/3.6

25 7 Cartridge valves 7. Introduction This chapter includes all technical information relating to valves for use in conjunction with the housings described in section. Complete the designation codes for the selected valves according to the technical information and guidelines given for each component. Cavity b Illustrated here by way of example is a correct and complete compilation for section 7 of the hydraulic power pack designation form. Cavity c V M D P M 8 7 /. Cavity d 7 S D F 8 7 / - T H Hand lever Stick lever Volt Materials Bucher Hydraulics cartridge valves are manufactured using steel of high mechanical strength. Friction and potential wear are minimized by special heat treatments. Surface heat treatments protect parts exposed to the external environment. Standard seals are NBR (Buna N), with backup ring in PTFE. For application requiring special compound FPM (Viton) etc. consult Bucher Hydraulics. 7.. Indication for use Use mineral oil based hydraulic fluids to ISO/DIN standard, only. Recommended viscosity range: - mm /s (cst) maximum viscosity 7 mm /s (cst). For different fluids and operating conditions, consult our Sales Dpt. All valves showed in the present catalogue are marked with correct flow direction, please observe it always. Valves must never be tampered with or modified. Any unwarranted interference may adversely affect the safety and correct operation of the entire system. External seals and backup rings are user-serviceable. The appropriate replacement kit is indicated for each valve. Before installing a valve in its cavity, ensure that the body and all components of the system are clean. Smear external seals lightly with grease, and check that any filters installed are correctly positioned. Tighten the valve to the specified torque setting General technical information All valves with leakage-free operating characteristic are % factory tested. Nonetheless, the guaranteed maximum leakage may be exceeded if the valve is installed in a system with inadequate filtration. Pressure, drops and other general performance indicated in the catalogue are referred exclusively to the component. In the case of valves subject to adjustable setting, such as the pressure relief and if not specified in the order, we set them according to standard setting values indicated at section Solenoid valves The correct selection of the solenoid valve is related to the maximum flow rate and operating pressure values. In a system with a single acting cylinder, therefore, it must be considered that the effective rate of flow through the unloading solenoid valve is not the flow delivered by the pump, but rather the momentary flow exhausted from the cylinder, or the restricted flow needing a pressure-compensated flow control valve, if installed. The nominal voltage is the value indicated on the solenoid. Effective voltage must be measured at the terminals of the solenoid connector. A maximum allowed voltage tolerance of ±% in relation to the nominal value is accepted. Incorrectly power supply components and cables (which length has to be as shorter as possible) and/or low battery charge can cause not correct solenoid valve operation. Standard solenoids valves are designed for D.C. operation. A.C. supply requires a connector with bridge rectifier included. When energized with A.C. voltage, the solenoids can operate at or 6 Hz frequency, without distinction. The connection used for standard solenoids are to EN (ex DIN 436). For solenoid with different connections (Amp Junior Timer, Direct Wiring, etc.) can be supplied on request, after agreement with Bucher Hydraulics, please contact our Slaes Department. The solenoid can be rotated through 36, and the connector EN (ex DIN 436) positioned at 9 intervals. Specified performance datas were recorded in stabilized solenoid operated temperature and voltage at the -% of the nominal value. All solenoid valves are fitted with protective O-rings installed between the tube and the solenoid. This protects internal parts from condensation and contaminants, which could cause malfunction. Standard solenoids are not suitable for operation in environments where there is any risk of explosion (see Directives and standards) -P-9937-EN-/3.6 /44

26 7.. General notes on D.C. power input A swift and secure coupling is obtained using the special connector (type 449). The cable coming from the D.C. power source (batteries, rectified a.c. main supply, etc.) must be connected as indicated in the diagram (figure ). The negative and positive polarity of the wire need not be verified for connection purposes. The connector incorporates a terminal for earthing the solenoid. It is important to check that the grommet and armour clamp nut are correctly assembled (figure ), as this prevents the cable being wrenched from connector. Fig. Fig. 3 Rectifier symbol Direct current Fig. Alternative current (A.C.) Earth Earth VDR Grommet Connector Solenoid Washer Nut Fig. 4 Connector Solenoid For users wishing to make up special circuits and blocks with Bucher Hydraulics S.p.A. cartridge valves, it is important to observe the indications given below when machining the valve cavities. Relief and solenoid valves + hand pump PM87 cavity (.8 ) (. ) (.98 ) /4-6 UNF-B Ø.4 Ø. B (.77 ) (.69 ) R.. (.8 ) (. ) (. ) (. ) (.47 ) (.33 ) B 8. max. 3. min. (. ) 8. max (.33 ) (.4 ). max. 6/44 -P-9937-EN-/3.6

27 7. Pressure relief valves 7.. Pressure relief valve: VMD Direct acting Balanced piston Adjustable setting Three pressure setting ranges Nm 4.4 (.4") 6 (.") T Ø.7 (."DIA) 3/4"-6 UNF Ø.8 (.86"DIA) T P P T P + Nm 9 P [bar] 3 Q [l/min] The purpose of a relief valve is to keep the maximum system pressure at a safe level. When the hydraulic power unit is supplied with pressure relief valves, the correct calibration is provided by Bucher Hydraulics S.p.A. and there are no reasons to change this value. * Max pressure admitted as single valve inside power: 9 bar (peak 3 bar, see section.). Pressure setting For preset values other than those indicated, replace the first two digits of the designation with the setting required. For example, required setting bar: designation type VMD. Always check that the required value falls within the standard ranges of adjustment. Performances Max. Flow rate l/min. Max. Pressure 9 bar * Weight. kg Oil temperature - to 9 C Recomanded filtration /9/6 ( NAS 638) Spring Type Setting range Code T87/ Plugged 7788 Y VMD -7 bar N VMD - 8 bar B VMD - 9 bar (*) P-9937-EN-/3.6 7/44

28 7.3 Solenoid operated directional valves Circuit Solenoid Override Type Power Description Page Normally closed On-Off Without manual override Standard version Piloted standard (6 Watt) SPD87/-TV Page 9 Direct acting heavy duty (7 Watt) SDF87/-TH Page 3 With manual override Piloted standard (7 Watt) SPFE87/-TV Page 3 Direct acting heavy duty (7 Watt) SDFE87/-TH Page 3 Proportional Without manual override Piloted standard (-6 Watt) PDF87/HSC Page 3 Normally open On-Off Without manual override Standard version Piloted standard (7 Watt) SPF87/-TOV Page 3 With manual override Piloted standard (7 Watt) SPFE87/-TOV Page 3 8/44 -P-9937-EN-/3.6

29 7.3. Solenoid operated directional valve: SPD87/-TV Normally closed Piloted - 6 W Poppet type Flow from to Performances Max. pressure 7 bar 4 (.7 ) 8.8(.3 ) 7/8" +7 Nm 3-3/4-6 UNF micron 8.6 (.3 ) 7 (.67 ) 4.8 (.6 ) 69.8 (.7 ) DC 76.3 (3 ) AC Max. recommended pressure See. Max. flow Rated power l/min. 6 Watt Intermittence ED= % Voltage tolerance ± % Internal leakage Temperature range - drops/min. -/+9 C 49. (.93 ) 6.6 (.43 ) 7.8 ( 3/3) Weight (complete valve):.3 Kg Connector type DIN 436 Time to open V l/min 8% of final change of state Time to close V - l/min 8% of final change of state 6 ms. 8 ms. O-Ring replacement kit Pressure drop bar (Cartridge only) Oil: Viscosity 3Cst at 38 C Minimum suggested working pressure = bar l/min Directional valve without coil and connector Type Code SPD87/-TV P.M Coil voltage - A.C. supply requires a connector with bridge rectifier included. 8 Watt D.C. A.C. Volt V. 4 V. 4 V. V. V. Type Complete solenoid valve for D.C. current Complete solenoid valve for A.C. current Type Code Type Code SPD87/-TV-3-HC 9784 SPD87/-TV-3-HC 9776 SPD87/-TV--HC 969 SPD87/-TV-4-HC SPD87/-TV--HC P-9937-EN-/3.6 9/44

30 7.3. Solenoid operated directional valve: SDF87/-TH - SDFE87/-TH Normally closed Poppet type Direct acting - 7 Watt Flow from to With (SDFE) or without (SDF) manual override Manual override = push to open (. ) (.4 ) 68 (.68 ) (.4") (.3 ) 7 (.8 ) Ø.7 (." DIA) Nm 3/4-6 UNF Filter μm 36 (.4") (C.C.) (.9 ) 3.. (.4 ) Performances Max. pressure 3 bar Max recommended pressure See. Max. flow Rated power l/min. 3 bar 7 Watt Intermittence ED= % Voltage tolerance ± % Internal leakage Temperature range - drops/min. -/+9 C Connector type DIN 436 Time to open (- bar) Time to close (- bar) - ms. - ms. SDF87 SDFE87 Weight (mechanical part only):. Kg 9 8 Oil: Viscosity 37 mm /s at 4 C Pressure drops 7 6 Max. flow rate depending on nominal pressure Operating limit bar 4 3 l/min l/min. 3 bar Type Code* ELVAL SDF87/ TH P.M ELVAL SDFE87/ TH P.M SDF87 SDFE87 * Mechanical part code only. For connector and coil see section: /44 -P-9937-EN-/3.6

31 7.3.3 Solenoid operated directional valve: SPFE87/ TV Normally closed Poppet type Piloted (7 W) Flow from to With manual override (screw type) Manual override = unscrew to open Performances Max. pressure 3 bar Max. recommended pressure See. Max. flow 4 l/min. 7.9 (.79") 36. (.4") Nm 36 (.4") Rated power 7 Watt Intermittence ED= % 3 (.") 4.6 (.8") 7. (.8") Ø.7 ( DIA) 3/4-6 UNF Filter 8 μm 3. (.93"). (.7") Voltage tolerance ± % / -% Internal leakage. cm 3 /min. Temperature range -/+9 C Connector type DIN 436 Time to open <= 3 ms. Time to close <= ms. Weight (mechanical part only):.8 Kg Oil: Viscosity 46 cst at 4 C Pressure drops 6 bar 8 (Energised) Minimum suggested working pressure = bar l/min Type Code* ELVAL SPFE87/ TV P.M * Mechanical part code only. For connector and coil see section: P-9937-EN-/3.6 3/44

32 7.3.4 Solenoid operated directional valve: SPF87/ TOV - SPFE87/ TOV Normally open Poppet type Piloted (7 W) Flow from to With (SPFE) or without (SPF) manual override (pin type) Manual override = push to open Performances Max. pressure 3 bar Max. recommended pressure See. Max. flow 4 l/min (.6") Nm 36 (.3") (.4") SPF 3 (.") 9.8 (.39") 6.7 (.47") Ø.7 3/4-6 UNF 7 (.6") SPFE Filter 8 μm 3. (.93"). (.7") Rated power 7 Watt Intermittence ED= % Voltage tolerance ± % / -% Internal leakage. cm 3 /min. Temperature range -/+9 C Connector type DIN 436 Time to open <= 3 ms. Time to close <= ms. Weight (mechanical part only):. Kg Oil: Viscosity 46 cst at 4 C Pressure drops 6 bar 8 (Energised) Minimum suggested working pressure = bar l/min Type Code* ELVAL SPF87/ TOV P.M ELVAL SPFE87/ TOV P.M SPF87 SPFE87 * Mechanical part code only. For connector and coil see section: /44 -P-9937-EN-/3.6

33 7.3. Directional valve solenoids. (.8 ) DIN connector 36 (.4 ) 3. (.9 ) 4. (.96 ) SDF87 - SPFE87 (TV-TO) - SDFE87 - SPF87 (TO) 38. (. ) 3." 3."." ".6".4" AMP connector 3..9" 6..6" 9..77" SPD87 DIN connector For solenoid valve series 3."..4" SDF87 SPE87 SDR87 SDRE87 SPD Wire class H (VDE8) Protection IP6 (DIN4) 8.6.3" ".98" " Coil insulation Duty rating ED % Connector style F DIN 436 or AMP DIN 436 Stabilized temperature 7 C 9 C (DC vers.) 8.7" Voltage tolerance ± % Connector style SDF - SPFE - SDFE - SPF SPD DIN AMP DIN Supply Voltage Nominal Coil voltage Power (Watt) Resistance (Ohm) Ambient temp. Stabil. temp. Current (Ampere) Ambient temp. Stabil. temp. Coil code V. DC. V. DC V. DC. 4 V. DC V. DC. 48 V. DC V. AC..6 V. DC V. AC. 98 V. DC V. AC. 98 V. DC V. DC. V. DC V. DC. 4 V. DC V. DC. V. DC V. DC. 4 V. DC V. AC..6 V. DC V. AC. 8 V. DC V. AC. 6 V. DC A.C. Supply requires a connector with bridge rectifier included. -P-9937-EN-/3.6 33/44

34 7.3.6 Connector for solenoid directional valves Part number: 44.9 For power input D.C. Connector type DIN 436 Number of poles + Supply voltage max. V. Nom. capacity at contacts A. Max capacity at contacts 6 A. Resistance at contacts 4 mohm Max section of cable. mm 7. (.8 ) Outer material Contact mount material Glass fibre reinforced Nylon Color Black 4. (.67 ) Armour clamp Pg 9 Ø cable 6-8 mm. 9 (.4 ) Protection factor Insulation class IP6 (DIN4) C (VDE) Temperature range -4 / +9 C Part number: 44. For power input A.C. Connector type DIN 436 Number of poles + Supply voltage max. V. Nominal capacity at contacts A. Max. capacity at contacts 6 A. VDR Resistance at contacts 4 mohm Max. section of cable. mm 34 (.34 ) Outer material Contact mount material Glass fibre reinforced Nylon Color Diodes Black N 47 GP 4. (.67 ) Overvoltage protection VDR Armour clamp Pg 9 9 (.4 ) Ø cable Protection factor 6-8 mm. IP6 (DIN4) Insulation class Temperature range C (VDE) -4 / +9 C 34/44 -P-9937-EN-/3.6

35 7.3.7 Proportional solenoid valve: PDF87/HSC Normally closed Poppet type Pilot type Flow from to (.87") 37 (.46") 6. (.4") 3/4"-6 UNF 8. (.33") (.97") 7. - (.8") 3 +7 Nm Nm Resistance (at C) PWM frequency Electric performances V 4 V 7. Ohms Ohms - Hz PWM frequency Connection type DIN 436 Max current, non continuous Duty Max current, continuous Duty ma ma - ma 8-8 ma Minimum current 3-4 ma - ma Other connectors available (DIN), AMP JT Seal kit code Code PDF87/HSC-HC ( V) 974 PDF87/HSC-HC (4 V) 973 With DIN coil, without connector Flow (l/min) vs. Current (ma - Hz) at various differential pressures C V 4 V Typical hysteresis Typical hysteresis Oil: Viscosity 37 mm /s at 4 C Oil: Viscosity 37 mm /s at 4 C 4 4 Q (l/min) 3 Q (l/min) I (Amps) I (Amps) -P-9937-EN-/3.6 3/44

36 7.3.8 Electric connectors to control proportional valves Ordering code 443 Current output range (PWM) -3 ma Connector type DIN 436 Degree of protection IP 67 PWM dither frequency Operating temperature Adjustable ramp time - Hz (adjustable) - C / +8 C.- sec. Analog input signal (*) - V Input impedance kohm Typical ctrl pot resistance -47 kohm (*) Other analog input signal on demand (- V or - ma) 34. (.36") 3. (.6") 4 (.6") 39 (.3") (DIN 436 female socket) 8(.") 6. (.6") 7 (.6") 64(.") 7. (.8") 8. (.33") Power supply wiring colours Blue: Positive from Powe source Yellow/Green: Negative from Remote potentiometer wiring colours Black: command signal supply (+V) Brown: command signal in Proportional valves wiring colours : proportional coil output : proportional coil current feedback line 4x. CABLE - Lenght = 7 mm IMPORTANT!: Other type of electric connectors and electronic cards are available. See 36/44 -P-9937-EN-/3.6

37 7.4 Manual lowering valve 7.4. Manual lowering valve: ZR87/-TV (dedicated housing is requested) Normally closed Code Max. pressure... 3 bar Max. recommended pressure... bar Max flow... l/min. Internal leakage... - drops/min. Temperature range...-/+9 C O-Ring replacement kit M 8x. 7. ø.7 (. ) 3/4-6 UNF. (.6 ) 6 (.44 ) M 8x. 7 (.4 ) 9 (.4 ) 8 (. ) (.69 ) Metering performance. + Nm (.83 ) Code: l/min Weight:. Kg. mm..... Stroke Oil: Viscosity 37mm /s at 4 C - +8 Nm The connecting end of the lever allows the handle to be mounted in two different positions. bar l/min. Lever stick Lo Length Type Code Lo mm -.9 inches AL 79 7 Lever stick A L M8x. mm inches AL 73 mm inches AL3 7 3 mm -.8 inches AL4 76 -P-9937-EN-/3.6 37/44

38 7.4. Manual lowering valve with microswitch: ZR87/-TVM (dedicated housing is requested) Normally closed Code Max. pressure... 3 bar Max. recommended pressure... bar Max flow... l/min. Internal leakage... - drops/min. Temperature range...-/+9 C O-Ring replacement kit M 8x. M 8x. ø.7 (. ) 3/4-6 UNF. (.6 ) 6 (.44 ) 84 (3.3 ) 9 (.4 ) 8 (. ) + Nm (.83 ) Code: B A C A B = Microswitch operated A C = Hydraulically operated Weight:. Kg Nm The connecting end of the lever allows the handle to be mounted in two different positions. Oil: Viscosity 37mm /s at 4 C C 6 A bar 8 - B 4 Flow l/min. Lever stick Lo Length Type Code Lo mm -.9 inches AL 79 7 Lever stick A L M8x. mm inches AL 73 mm inches AL3 7 3 mm -.8 inches AL /44 -P-9937-EN-/3.6

39 7.4.3 Microswitch Code 4443 Code (micro only) (. ) Complete code (micro+fixing kit) (.4 ) 3, (.9 ).3 (.4 ). (.87 ) 4 (.7 ) Voltage V. Index protection IP Nominal current 6 A. Max. current A. 3 (.9 ) Temperature range -/+ C.3 (.4 ) Code (.73 ).3 (.4 ). (.87 ) 4 (.7 ) Max total stroke Working stroke Mechanical life.6 mm.. mm. x 7 cycles 7. Manual override valves 7.. Manual override valve: NV/87-R Manual override Flow restrictor Poppet type Flow from to Code Max. pressure... 3 bar Max flow... l/min. Internal leakage... - drops/min. Temperature range...-/+9 C O-Ring replacement kit Weight.... Kg. (.8 ). min 4. max. (.96 ) 4 7. (.6 ) (.8 ) ø.7 3/4-6 UNF (.9 ) (. ) Nm -3 + Nm (. ) ø6. (.4 ) 8 6 Oil: Viscosity 37mm /s at 4 C Pressure drops with restrictor open bar 4 l/min. -P-9937-EN-/3.6 39/44

40 7.6 Emergency hand pump: PM87/. Inlet check Outlet check Ball type Code M x. M x. ø.7 (. ) 3/4-6 UNF (3.3 ) (.8 ) (.7 ) Max recommended pressure... bar Displacement.... cm 3 Internal leakage... - drops/min. Temperature range... -/+9 C O-Ring replacement kit (.36 ) (.98 ) 7 (.83 ) The connecting end of the lever allows the handle to be mounted in two different positions. + Nm Code: (.77 ) B A (.39 ) 8 + Nm 6 Weight:. Kg B A = Inlet A B = Outlet A 6 B Lever stick L Length Type Code 9 mm inches AL 7 7 Lever stick A L Mx. Lo mm -.4 inches AL 73 3 mm -.8 inches AL mm inches AL4 7 4/44 -P-9937-EN-/3.6

41 7.7 Solenoid valves (For availability please consult our Sales Organisation) Circuit Type 4 ways, three positions A B b a P T A B b a P T A B b a P T A B b a P T A B CB- CC- CA- CD- CX- b a P T 4 ways, two positions solenoid valves also available, please contact our Sales Department..8.8" ".46" " Std. Voltage Type V D.C. 3 4 V D.C. 3 4 V A.C. V A.C. 4 V A.C. A B T 8 P 8.6.3".3" 39.3 Coil and connector features: see section 7.3. (SPD type) and " -P-9937-EN-/3.6 4/44

42 7.8 Other valves 7.8. Dual pilot to open, Poppet-Type check valve 67.4 (.6") (.") (.") Ø.7 (."DIA) Nm 4 3 3/4"-6 UNF bar A () B (4) P-T () P-T (3) Pressure drop vs. flow.4. to to l/min 7.8. Throttle compensated flow control valve: VRC /4" BSP A Inlet flow A B Pressure B compensated outlet flow 4 (.94") -8 Nm B Type Regulated flow Q Code l/min VRC/ VRC/ VRC/ 787 VRC/ VRC/ Flow tolerance = ±% 7.9 Valve cavity plugs 7.9. Valve cavity plug T87/ Two way 3. (.4 ) Code Nm 8 (.3 ) 3 (. ) 7. (.8 ) ø.7 (. ) 3/4-6 UNF Seal kit code 9746 Weight.7 Kg. 4/44 -P-9937-EN-/3.6

43 7. Example of hydraulic power pack ordering code Type of housing U P 4 / K + K G A P / Pump. 7 Hi-Lo S Series L C E - Drive 6 Tank Fitting Pos. Suction assembly kit Electric motor Pos. Relay Pos. 8 P R K / A A P Cavity b Cavity c V M D P M 8 7 /. Cavity d 7 S D F 8 7 / - T H Cavity e Hand lever Lever stick Volt V R C / Composition of product code /KG. AP/.7 S439 L-3R P C8PK/A A E6 b) VMD c) PM87/. d) SDF87/-TH -3 e) VRC/ Product identification plate example: : Rotation (S= Counterclockwise rotation) : Manufacturing year and month ---> S L 3 : Bucher Hydraulics S.p.A. product code 339 wo ******** - **/**/**** : Date : Work order number MADE IN ITALY Manufacturing month Manufacturing year January A 6A 7A 8M 9M M February B 6B 7B 8N 9N N March C 6C 7C 8P 9P P April D 6D 7D 8Q 9Q Q May E 6E 7E 8R 9R R June F 6F 7F 8S 9S S July G 6G 7G 8T 9T T August H 6H 7H 8U 9U U September I 6I 7I 8V 9V V October J 6J 7J 8Z 9Z Z November K 6K 7K 8X 9X X December L 6L 7L 8Y 9Y Y -P-9937-EN-/3.6 43/44

44 6 by Bucher Hydraulics S.p.A, I-44 Reggio Emilia 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. The 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: /44 -P-9937-EN-/3.6