Axial Piston Variable Pump A7VO

Transcription

1 Electric Drives and Controls Hydraulics Linear Motion and Assembly Technologies Pneumatics ervice Axial Piston Variable Pump A7VO E / /32 eplaces: Technical data sheet eries 6 izes Nominal pressure 350 bar Peak pressure 400 bar open circuit Contents Ordering Code / tandard Program 2 Technical Data Power Control D Pressure Control HD Hydraulic Control, Pilot Pressure elated EP Electrical Control with Proportional olenoid 15 nit Dimensions, ize nit Dimensions, ize nit Dimensions, ize nit Dimensions, ize nit Dimensions, ize Installation Notes 31 General Notes 32 Features Variable pump with axial tapered piston rotary group of bent axis design for hydrostatic drives in open circuit se in mobile and industrial applications The output flow is proportional to the drive speed and pump displacement and is steplessly variable between maximum and zero (q v max to q v min = 0) Wide selection of regulating and control devices ugged, compact bearing system with long service life

2 2/32 Bosch exroth AG A7VO E /03.06 Ordering Code / tandard Program A7V O / 63 B Axial piston unit 01 Bent axis design, variable, nominal pressure 350 bar, peak pressure 400 bar A7V Operation mode 02 Pump, open circuits O ize 03 Displacement V g max in cm see E Control device Power control with pressure cut-off with pressure cut-off and stroke limiter negative characteristic Δp = 25 bar DH1 D 04 with stroke limiter negative characteristic Δp = 25 bar H1 Pressure control D remote controlled DG with load sensing D Hydraulic control, pilot pressure related Δp = 10 bar HD1 for pressure cut-off, remote controlled Δp = 10 bar HD1G pilot pressure related Δp = 25 bar HD2 for pressure cut-off, remote controlled Δp = 25 bar HD2G Electrical control, with proportional solenoid for pressure cut-off, remote controlled EP EPG eries eries 6, Index 3 63 Direction of rotation Viewed on shaft end clockwise 06 counter-clockwise L eals NB (nitril-caoutchouc), shaft seal in FKM (fluor-caoutchouc) N 08 haft end plined shaft, DIN 5480 Z Parallel keyed shaft, DIN 6885 Mounting flange hole IO B ervice line ports AE pressure port, rear (metric fastening thread) 01 AE suction port, rear (metric fastening thread) P = preferred program

3 E /03.06 A7VO Bosch exroth AG 3/32 Technical Data Hydraulic fluid Before starting project planning, please refer to our data sheets E (mineral fluid), E (environmentally acceptable press ure fluids) and E (HF pressure fluids) for detailed information regarding the choice of pressure fluids and conditions of use. The A7VO variable pump is not suitable for use with HFA. If HFB, HFC and HFD or environmentally acceptable pressure fluids are being used, the limitations regarding technical data and seals mentioned in E and E must be observed. When ordering please indicate the used hydraulic fluid. Viscosity range We recommend that a viscosity (at operating temperature) for optimum efficiency and service life purposes of ν opt = optimum viscosity mm 2 /s be chosen, taken the tank temperature (open circuits) into account. Limits of viscosity range The following values apply in extreme cases: ν min = 5 mm 2 /s short term (t < 3 min) at max. permitted temperature t max = +115 C. ν max = 1600mm 2 /s, short term (t < 3 min) with cold start (p < 30 bar, n 1000 rpm, t min = -40 C). Note that the maximum hydraulic fluid temperature of 115 C must not be exceeded locally either (e.g. bearing area). The temperature in the bearing area is - depending on pressure and speed-up to 12 K higher than the average leakage fluid temperature. pecial measures are necessary at temperatures between -40 C and -25 C. Please contact us. ee E B for detailed information about use at low temperatures. election diagram vis co si ty ν in mm 2 /s tem pe ra ture t in C t min = -40 C VG 22 VG 32 VG 46 VG 68 VG 100 hydraulic fluid temperature range t max = +115 C Details regarding the choice of hydraulic fluid The correct selection of hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature, in an open circuit the tank temperature. The hydraulic fluid should be selected so that within the operating temperature range, the operating viscosity lies within the optimum range (ν opt ) (see shaded section of the selection diagram). We recommend that the highest possible viscosity range should be chosen in each case. Example: At an ambient temperature of X C an operating temperature of 60 C is set in the circuit. In the optimum viscosity range (ν opt ; shaded area) this corresponds to the viscosity classes VG 46 or VG 68; to be selected: VG 68. Please note: The leakage fluid temperature, which is affected by pressure and rotational speed, is always higher than the tank temperature. At no point in the system may the temperature be higher than 115 C. If this cannot be achieved due to unusual operating parameters or high ambient temperatures, we recommend to apply bearing flushing at port. Filtration The finer the filtration, the cleaner the fluid and the longer theservice life of the axial piston unit. To ensure proper function of the axial piston unit, the hydraulic fluid must have a cleanliness level of at least 20/18/15 according to IO At very high hydraulic fluid temperatures (90 C to max. 115 C), a cleanliness level of at least 19/17/14 according to IO 4406 is required. Please contact us if these cleanliness leveles cannot be achieved.

4 4/32 Bosch exroth AG A7VO E /03.06 Technical Data Operating pressure range Inlet Pressure at port The minimum inlet pressure depends on the speed. The following limits may not be exceeded. p abs min 0,8 bar The maximum pressure p abs max also depends on speed (see succeeding diagram). Minimum inlet pressure at suction port with increased speed In order to avoid damage of the pump a minimum inlet pressure at the suction port must be assured. The minimum inlet pressure is related to the rotational speed and the displacement of the variable pump. 1,5 2,3 n n max 1 peed 1,4 2,0 1,9 1,3 1,8 1,7 1,6 1,2 1,5 1,4 1,3 1,1 1,2 1,1 1,0 1,0 0,9 0,9 0,8 0,8 0,6 0,7 0,8 0,9 1,0 Displacement V g V g max Note: max. permissible speed n max perm. (speed limit, see page 5) min. and max. permissible inlet pressure at port permissible values for the shaft seal ring Outlet Maximum pressure at port A or B (pressure specifications in according to DIN 24312) no radial loading (coupling) with radial loading 1 ) (pinion or belt drive) Nom. pressure p N Inlet pressure pabs in bar Peak pressure p max 350 bar 400 bar 315 bar 400 bar 1 ) please observe the permissible radial loading, see page 6 Leakage fluid The leakage fluid chamber is connected to the suction chamber. A leakage fluid line to the tank is not required (both ports are plugged). Exception: A leakage fluid line for discharge from port T 1 to the tank is imperatively necessary for pressure control or pressure cut-off. haft seal ring Permissible pressure load The service life of the shaft seal ring is affected by the speed of the pump and the leakage fluid pressure (max. permissible leackage fluid pressure 6 bar abs. at reduced speed, as to diagram). hort-term (t < 5 s) pressure spikes of up to 10 bar absolute are permitted. The more frequently the pressure peaks are occurring, the shorter the service life of the shaft seal ring. It is recommended the average permanent leakage fluid pressure must not exceed 3 bar absolute. The pressure in the case must be equal to or greater than the external pressure on the shaft seal ring. The pure mechanical resistance to case pressure is approximately 20 bar. Perm. pressure pabs. max. (bar) size 107 size 160 size 28 size 55 size peed n (rpm) Temperature range The FKM shaft seal ring is admissible for a case temperature range from -25 C to +115 C. Note: For applications below -25 C a NB shaft seal ring is necessary as special version (admissible temperature range -40 C to +90 C). When ordering indicate NB shaft seal ring in clear text. Direction of flow Direction of rotation, viewed on shaft end clockwise counter-clockwise to B to A

5 E /03.06 A7VO Bosch exroth AG 5/32 Technical Data Table of values (theoretical values, ignoring η mh and η v ; values rounded) ize Displacement V g max cm 3 28,1 54, peed max. 1 ) at V g max n max1 rpm at V g < 0,74 V g max (see diagram, page 4) n max2 rpm peed max. 2 ) n max perm. rpm Flow at n max1 and V g max q v max1 L/min Power at q v max1 and Δp = 350 bar P max1 kw Torque at V g max and Δp = 350 bar T max Nm Mass moment of inertia (of the rotating parts) J kgm 2 0,0042 0,0042 0,0080 0,0127 0,0253 Filling capacity V L 0,5 0,75 1,2 1,5 2,4 Mass (approx.) m kg ) The values shown are valid for an absolute pressure (p abs ) of 1 bar at the suction port and when operated on mineral fluid with a specific mass of 0,88 kg/l. 2 ) Maximum speed (speed limit) for an increase in the inlet pressure p abs at the suction port and V g < V g max Determining the size Flow q v = Torque T = Power P = V g n η v 1000 V g Δp 20 π η mh 2 π T n = q v Δp η t L/min Nm kw V g = Displacement per revolution in cm 3 Δp = Differential pressure in bar n = peed in rpm η v = Volumetric efficiency η mh = Mechanical-hydraulic efficiency η t = Overall efficiency

6 6/32 Bosch exroth AG A7VO E /03.06 Technical Data Permissible radial and axial loading on the drive shaft The values given are maximum values and do not apply to continuous operation. ize adial force, max. F q Fq max N at distance a from shaft collar a a mm 12, , ,5 adial force/bar operating pressure 1 ) F q /bar N/bar 14,2 23,2 29, ,2 Axial force, max. 2 ) - +F ax max N F ax + F ax max N Perm. axial force/bar operating pressure ±F ax zul. /bar N/bar 4,6 7,5 9,6 11,3 15,1 1 ) at gear drive (DIN 867) with smallest PCD of pinion D min and V g max (D min = 2,5 x diameter of drive shaft). Preload required/bar operating pressure (radial force) to transmit torque at V-belt drive (DIN 7753) with smallest pulley diameter D K min und V g max (D K min = 5 x diameter of drive shaft). 2 ) max. permissible axial force when stopped or when axial piston unit working in pressureless conditions When considering the permissible axial force, the force-transfer direction must be taken into account: F ax max = increase in service life of bearings + F ax max = reduction in service life of bearings (avoid if at all possible) Effect of radial force F q on the service life of the bearings By selecting a suitable force-transfer direction of F q, the stress on the bearing caused by the internal transmission forces can be reduced, thus achieving the optimum service life for the bearing. ecommended position of mating gear depending on direction of rotation. Examples: Gear drive V-belt drive ϕ opt = 45 ϕ opt = 45 ϕ opt = 70 ϕ opt = 70 Clockwise direction of rotation Pressure on port B Counter-clockwise direction of rotation Pressure on port A Clockwise direction of rotation Pressure on port B

7 E /03.06 A7VO Bosch exroth AG 7/32 Power Control The power control regulates the displacement of the pump depending on the operating pressure so that a given drive power is not exceeded at constant drive speed. p B V g = constant p B = operating pressure; V g = displacement The precise control with a hyperbolic control characteristic, provides an optimum utilization of available power. The operating pressure acts on a rocker via a piston. An externally adjustable spring force counteracts this, it determines the power setting. If the operating pressure exceeds the set spring force, the control valve is actuated by the rocker, the pump swivels back (direction V g min ). The lever length at the rocker is shortened and the operating pressure can increase at the same rate as the displacement decreases without the drive powers being exceeded (p B V g = constant). In zero pressure non-running condition, the pump is swivelled to its starting position (V g max ) by means of the control spring. etting range for start of control bar The output power (characteristic) is influenced by the efficiency of the pump. tate in clear text in the order: drive power P in kw drive speed n in rpm max. flow q V max in l/min After clarifying the details a power diagram can be created by our computer. Characteristic Operating pressure pb in bar V g min Displacement V g max Circuit diagram V g min 220 bar etting range tart of control 50 bar V g max B (A) A1 X3 T1

8 8/32 Bosch exroth AG A7VO E /03.06 Power Control D Power control with pressure cut-off Characteristic D Pressure cut-of is a pressure control that adjusts the pump displacement back towards V g min when a preset pressure value is reached. This function overrides the power control, i.e. below the preset pressure value, the power function is effective. The pressure cut-off is preset to a specified value at the factory. etting range for pressure cut-off bar When ordering, state in clear text the setting of the pressure cut-off. Note: Operating pressure pb in bar etting range 350 max 200 min At the start of control of the power control the max. permissible setting of the pressure cut-off has to be multiplied by factor 5. Example: tart of control (power control): 50 bar max. perm. setting of pressure cut-off: 50 bar 5 = 250 bar The version with pressure cut-off necesitates a leakage fluid line from port T 1 to the tank. With plugged leackage fluid port a permissible duration of operation of the pressure cut-off 2 min is resulting at t tank 50 C. Any pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. V g min Circuit diagram D Displacement V g min V g max V g max A1 B (A) X3 T1

9 E /03.06 A7VO Bosch exroth AG 9/32 Power Control... Power control with stroke limiter Circuit diagram H1 The hydraulic stroke limiter can be used to vary or limit the displacement of the pump continuously over the whole control range. The displacement is set with the pilot pressure p t (max. 40 bar) applied to port X 1. The power control overrides the hydraulic stroke limiter control, i.e. below the hyperbolic power characteristic, the displacement is controlled, by the pilot pressure. When exceeding the power characteristic with a set flow or load pressure, the power control overrides and reduces the displacement following the hyperbolic characteristic. X1 V g min V g max Y3 B (A) A1 X3 A control pressure of 40 bar is required to swivel the pump from its starting position V g min to V g max. The required control pressure is taken either from the operating pressure, or from the externally applied control pressure at the port. T1 To ensure the control even at low operating pressure < 40 bar the port must be supplied with an external control pressure of approx. 40 bar. Circuit diagram DH1 H1 Hydraulic stroke limiter (negative characteristic) X1 Y3 Control from V g max to V g min With increasing pilot pressure the pump swivels to a smaller displacement. etting range for start of control 4 15 bar When ordering, state in clear text the start of control. V g max B (A) A1 tarting position without control signal (pilot pressure): V g max Characteristic H1 Increase in pilot pressure (V g max V g min ) Δp = 25 bar V g min X3 T1 Pilot pressure pt in bar ,2 0,4 0,6 0,8 1,0 V g min Displacement V g max etting range

10 10/32 Bosch exroth AG A7VO E /03.06 D Pressure Control The pressure control keeps the pressure in a hydraulic system constant within its control range even under varying flow conditions. The variable pump only moves as much hydraulic fluid as is required by the actuators. If the operating pressure exceeds the setpoint set at the integral pressure control valve, the pump displacement is automatically swivelled back until the pressure deviation is corrected. In zero pressure non-running condition, the pump is swivelled to its starting position V g max by means of the control spring. etting range for pressure control bar When ordering, state in clear text the setting of the pressure control. Note: The version with pressure control D necesitates a leakage fluid line from port T 1 to the tank. Any pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. Zero stroke operation The standard pump unit is designed for intermittent constant pressure operation. hort-term operation at zero stroke (< 10 min.) is permissible up to a operating pressure p max = 315 bar at a tank temperature of 50 C. For long-term periods of zero stroke operation, port should be used for bearing flushing. Flushing port Characteristic D Operating pressure pb in bar etting range 350 max 50 min max. 10 bar Flushing flow (recommended) ize q v flush (L/min) Temperatur of flushing fluid tank temperatur Flow q v in L/min Circuit diagram D B (A) V g min V g max A1 X3 T1

11 E /03.06 A7VO Bosch exroth AG 11/32 D Pressure Control DG Pressure control, remote controlled A sequence valve with port plate takes over the function of the pressure cut-off. The valve is mounted separate from the pump, and the simple piping length should not exceed 5 m. High pressure is supplied from the pump to the valve via port, and the valve control pressure is fed back to the pump via port, causing the pump to swivel back towards V g min. Port T of the sequence valve and port T 1 of the pump must be connected back to tank (cooler). etting range for pressure control bar When ordering, state in clear text the setting of the pressure control. Note: Any pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. The sequence valve and port plate must be ordered separately. equence valve: DZ5DP2-1X/315YMO21 (Mat.No ) Port plate: G 115/1 (Mat.No ) Characteristic DG Operating pressure pb in bar etting range max min max. 10 bar Flow q v in L/min Circuit diagram DG (1) B (A) P A T V g min V g max A1 X3 T1 Position (1) is not included in the pump supply.

12 12/32 Bosch exroth AG A7VO E /03.06 D Pressure Control D Pressure control with load sensing Characteristic D The load sensing control is a flow control option that operates as a function of the load pressure to regulate the pump displacement to match the actuator flow requirement. The flow depends here on the cross section of the external sensing orifice (1) fitted between the pump outlet and the actuator. The flow is independent of the load pressure below the pressure cut-off setting and within the control range of the pump. The sensing orifice is usually a separately arranged load sensing directional valve (control block). The position of the directional valve piston determines the opening cross section of the sensing orifice and thus the flow of the pump. The load-sensing control compares pressure before and after the sensing orifice and maintains the pressure drop across the orifice - and therefore the pump flow - constant as a function of the orifice size. If the differential pressure Δp increases, the pump is swivelled back towards V g min and, if the Δp decreases the pump is swivelling out towards V g max until the pressure drop across the sensing orifice in the valve is restored. Δp orifice = p pump p actuator etting range for Δp bar Operating pressure pb in bar etting range 350 max 50 min Circuit diagram D Flow q v in L/min X4 B (A) V g min V g max A1 (1) max. 10 bar tandard setting 18 bar (please state in clear text when ordering) The stand-by pressure in zero stroke operation (sensing orifice plugged) is slightly above the Δp setting. (1) The sensing orifice (control block) is not included in the pump supply. X3 T1 Position (1) is not included in the pump supply.

13 E /03.06 A7VO Bosch exroth AG 13/32 HD Hydraulic Control, Pilot Pressure elated With the pilot pressure related control the pump diplacement is adjusted in proportion to the pilot pressure applied to port X 1. Maximum permissible pilot pressure p t max = 40 bar Control from V g min to V g max. Circuit diagram HD X1 Y3 With increasing pilot pressure the pump swivels to a higher displacement B (A) etting range for start of control 4-15 bar When ordering, state in clear text the start of control. V g min A1 A control pressure of 40 bar is required to swivel the pump from its starting position V g min to V g max. The required control pressure is taken either from the operating pressure, or from the externally applied control pressure at the port. To ensure the control even at low operating pressure < 40 bar the port must be supplied with an external control pressure of approx. 40 bar. V g max X3 Characteristic HD1 Increase in pilot pressure V g min to V g max Δp = 10 bar Pilot pressure pt in bar etting range ,2 0,4 0,6 0,8 1,0 V g min Displacement V g max Characteristic HD2 Increase in pilot pressure V g min to V g max Δp = 25 bar Pilot pressure pt in bar etting range ,2 0,4 0,6 0,8 1,0 V g min Displacement V g max

14 14/32 Bosch exroth AG A7VO E /03.06 HD Hydraulic Control, Pilot Pressure elated HD.G Hydraulic control, for pressure cut-off, remote controlled A sequence valve with port plate takes over the function of the pressure cut-off. The valve is mounted separate from the pump, and the simple piping length should not exceed 5 m. High pressure is supplied from the pump to the valve via port. The control pressure of the pump is directed to the valve via the port and led into the tank at port A located on the port plate of the sequence valve. In this case the pump is regulated to V g min in case of access of the set-point pressure value. etting range for pressure control bar When ordering, state in clear text the setting of the pressure control. Note: The port A of the sequence valve must be connected back to tank (cooler). Any pressure relief valve included in the circuit to limit the max. pressure must be set to a cracking pressure at least 20 bar above the pressure control setting. The sequence valve and port plate must be ordered separately. equence valve: DZ5DP2-1X/315XYMO20 (Mat.No ) Port plate: G 115/1 (Mat.No ) Characteristic HD.G Operating pressure pb in bar etting range max min max. 10 bar Circuit diagram HD.G X1 V g max V g min Position (1) is not included in the pump supply. Y3 B (A) Note The spring centering in the pilot control unit is not a safety device Through contamination in the control unit e.g. in hydraulic fluid, wear particles, or particles out of a system the valve spool can get stuck in an undefined position. In this case, the pump flow does not follow the command inputs of the machine operator anymore. Make sure that a proper emergency shut down function can bring the driven machine movements to a safe position immediately (e.g. stop). Adhere to the speci fi ed cleanliness level 20/18/15 (<90 C) or 19/17/14 (>90 C) to IO A1 X3 (1) P X A Flow q v in L/min

15 E /03.06 A7VO Bosch exroth AG 15/32 EP Electrical Control with Proportional olenoid With the electrical control with proportional solenoid, the pump displacement is adjusted proportionally to the solenoid current, resulting in a magnetic control force, acting directly onto the control spool that pilots the pump control piston. Characteristic EP Control from V g min to V g max With increasing control current the pump swivels to a higher displacement. A control pressure of 40 bar is required to swivel the pump from its starting position V g min to V g max. The required control pressure is taken either from the operating pressure, or from the externally applied control pressure at the port. To ensure the control even at low operating pressure < 40 bar the port must be supplied with a external control pressure of approx. 40 bar. Control current I in ma ,2 0,4 0,6 0,8 1,0 V g min Displacement V g max Note: Install pump with EP control in the fluid tank only when using mineral hydraulic fluids and an fluid temperature in the tank of max. 80 C. Circuit diagram EP Y3 To control the proportional solenoids the following electronic amplifi er and controller are available (also as to the Internet under B (A) BODA controller C (E 95200) and application software V g min A1 Analog amplifier A (E 95230) By using an proportional amplifier control of swivel time is also possible. Technical data of solenoids V g max X3 EP Voltage 24 VDC (±20%) Control current EP.G see HD.G Electrical control, for pressure cut-off, remote controlled tart of control at V g min 200 ma End of control at V g max 600 ma Limiting current 0,68 A Nominal resistance (at 20 C) 19,5 Ω Dither frequency 100 Hz Duty cycle 100% Type of protection (HICHMANN) IP65 to DIN EN Note The spring centering in the pilot control unit is not a safety device Through contamination in the control unit e.g. in hydraulic fluid, wear particles, or particles out of a system the valve spool can get stuck in an undefined position. In this case, the pump flow does not follow the command inputs of the machine operator anymore. Make sure that a proper emergency shut down function can bring the driven machine movements to a safe position immediately (e.g. stop). Adhere to the specified cleanliness level 20/18/15 (<90 C) or 19/17/14 (>90 C) to IO 4406.

16 16/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 28 Power control Note: All control versions are shown with clockwise direction of rotation. Before finalizing your design, please request approved installation drawing. Dimensions in mm (A1) 207 T ø ø max 25 Flange IO ' (X3) Y 118 ø125 ø View Y counter-clockwise rotation T 1 View Y clockwise rotation T ø19 24 ø A B

17 E /03.06 A7VO Bosch exroth AG 17/32 nit Dimensions, ize 28 haft ends Before finalizing your design, please request approved installation drawing. Dimensions in mm. Z plined shaft DIN 5480 W25x1,25x30x18x9g 19 6 P Parallel keyed shaft DIN 6885, A8x7x ø35 M8x ) 2 ) ø M8x ) 2 ) 28 ø35 50 Ports A, B ervice line ports (high pressure series) AE J518 3/4 in fastening thread DIN 13 M10x1,5; 17 deep 2 ) uction port (standard series) AE J /2 in fastening thread DIN 13 M12x1,75; 20 deep 2 ) Bearing flushing (plugged) DIN 3852 M16x1,5; 12 deep 100 Nm 2 ) Air bleed (plugged) DIN 3852 M18x1,5; 12 deep 140 Nm 2 ) High pressure (plugged) DIN 3852 M12x1,5; 12 deep 50 Nm 2 ) T 1 Pilot fluid drain (plugged, only D,..D.. open) DIN 3852 M12x1,5; 12 deep 50 Nm 2 ) Override (plugged) DIN 3852 M12x1,5; 12 deep 50 Nm 2 ) External control pressure (plugged) DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 1 Pilot pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) 1 ) centering bore according to DIN 332 (thread according to DIN 13) 2 ) please observe the general notes for the max. tightening torques on page 32

18 18/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 28 D Power control with pressure cut-off Before finalizing your design, please request approved installation drawing. Dimensions in mm. D D/DG Pressure control, remote controlled D 236 DG HD1/HD1G/HD2/HD2G Hydraulic control for pressure cut-off, remote controlled 216 EP/EPG Electrical control for pressure cut-off, remote controlled 216 Y3 76 (X3) 78 (A1) (DG) (D) 76 (X3) 78 (A1) X (X1) 159 (Y3) 187 (A1) 188 (X3) X (Y3) 187 (A1) 188 (X3)

19 E /03.06 A7VO Bosch exroth AG 19/32 nit Dimensions, ize 55 Power control Note: All control versions are shown with clockwise direction of rotation Before finalizing your design, please request approved installation drawing. Dimensions in mm (T1) 232 T ø ø ' Y ø160 ø max 31 Flange IO (A1) 242 (X3) View Y counter-clockwise rotation View Y clockwise rotation T 1 T ø ø49 A B

20 20/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 55 haft ends Before finalizing your design, please request approved installation drawing. Dimensions in mm. Z plined shaft DIN 5480 W30x2x30x14x9g P Parallel keyed shaft DIN 6885, A8x7x M12x ) 2 ) ø45 ø ø M12x ) 2 ) Ports A, B ervice line ports (high pressure series) AE J518 3/4 in Fastening thread DIN 13 M10x1,5; 17 deep 2 ) uction port (standard series) AE J518 2 in Fastening thread DIN 13 M12x1,75; 20 deep 2 ) Bearing flushing (plugged) DIN 3852 M18x1,5; 12 deep 140 Nm 2 ) Air bleed (plugged) DIN 3852 M18x1,5; 12 deep 140 Nm 2 ) High pressure (plugged) DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) T 1 Pilot fluid drain (plugged, only D,..D.. open) DIN 3852 M12x1,5; 12 deep 50 Nm 2 ) Override (plugged) DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) External control pressure (plugged) DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 1 Pilot pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 4 Load pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) 1 ) centering bore according to DIN 332 (thread according to DIN 13) 2 ) please observe the general notes for the max. tightening torques on page 32

21 E /03.06 A7VO Bosch exroth AG 21/32 nit Dimensions, ize 55 D Power control with pressure cut-off D 128 Before finalizing your design, please request approved installation drawing. Dimensions in mm. DH1 Power control with pressure cut-off, stroke limiter X 1 12 D (X1) 252 (Y3) X D/DG Pressure control, remote controlled 119 D Pressure control with load sensing D DG X D 238 X (DG) 135 (D) HD1/HD1G/HD2/HD2G Hydraulic control for pressure cut-off, remote controlled 256 EP/EPG Electrical control for pressure cut-off, remote controlled Y A 3 1 X Y A (X1) 190 (Y3) 209 (A1) 221 (X3) X (Y3) 209 (A1) 221 (X3)

22 22/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 80 Before finalizing your design, please request approved installation drawing. Dimensions in mm. Power control Note: All control versions are shown with clockwise direction of rotation (T1) T ø13.5 ø ø ' Y ø max Flange IO (X3) 270 (A1) View Y clockwise rotation View Y counter-clockwise rotation T 1 T ø25 34 ø A B

23 E /03.06 A7VO Bosch exroth AG 23/32 nit Dimensions, ize 80 haft ends Before finalizing your design, please request approved installation drawing. Dimensions in mm. Z plined shaft DIN 5480 W35x2x30x16x9g P Parallel keyed shaft DIN 6885, A10x8x M12x ) 2 ) ø50 38 ø ø M12x ) 2 ) 70 Ports A, B ervice line ports (high pressure series) AE J518 1 in Fastening thread DIN 13 M12x1,75; 17 deep 2 ) uction port (standard series) AE J /2 in Fastening thread DIN 13 M12x1,75; 17 deep 2 ) Bearing flushing (plugged) DIN 3852 M18x1,5; 12 deep 140 Nm 2 ) Air bleed (plugged) DIN 3852 M18x1,5; 12 deep 140 Nm 2 ) High pressure (plugged) DIN 3852 M16x1,5; 12 deep 100 Nm 2 ) T 1 Pilot fluid drain (plugged, only D,..D.. open) DIN 3852 M12x1,5; 12 deep 50 Nm 2 ) Override (plugged) DIN 3852 M16x1,5; 12 deep 100 Nm 2 ) External control pressure (plugged) DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 1 Pilot pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 4 Load pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) 1 ) centering bore according to DIN 332 (thread according to DIN 13) 2 ) please observe the general notes for the max. tightening torques on page 32

24 24/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 80 D Power control with pressure cut-off D Before finalizing your design, please request approved installation drawing. Dimensions in mm. DH1 Power control with pressure cut-off, stroke limiter (X1) X 279 (Y3) 1 D X D/DG Pressure control, remote controlled D DG D Pressure control with load sensing X 4 D 265 X (DG) 139 (D) HD1/HD1G/HD2/HD2G Hydraulic control for pressure cut-off, remote controlled 287 EP/EPG Electrical control for pressure cut-off, remote controlled 287 X (X1) 212 (Y3) 237 (A1) 241 (X3) X (Y3) 237 (A1) 241 (X3)

25 E /03.06 A7VO Bosch exroth AG 25/32 nit Dimensions, ize 107 Power control Note: All control versions are shown with clockwise direction of rotation Before finalizing your design, please request approved installation drawing. Dimensions in mm (T1) ø ø ' Y ø200 ø max 39 Flange IO (X3) 289 (A1) 190 View Y clockwise rotation View Y counter-clockwise rotation T 1 T ø25 36 ø A B

26 26/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 107 haft ends Before finalizing your design, please request approved installation drawing. Dimensions in mm. Z plined shaft DIN 5480 W40x2x30x18x9g P Parallel keyed shaft DIN 6885, A12x8x M12x ) 2 ) ø60 43 ø ø M12x ) 2 ) 80 Ports A, B ervice line ports (high pressure series) AE J518 1 in Fastening thread DIN 13 M12x1,75; 17 deep 2 ) uction port (standard series) AE J /2 in Fastening thread DIN 13 M12x1,75; 17 deep 2 ) Bearing flushing (plugged) DIN 3852 M18x1,5; 12 deep 140 Nm 2 ) Air bleed (plugged) DIN 3852 M18x1,5; 12 deep 140 Nm 2 ) High pressure (plugged) DIN 3852 M16x1,5; 12 deep 100 Nm 2 ) T 1 Pilot fluid drain (plugged, only D,..D.. open) DIN 3852 M12x1,5; 12 deep 50 Nm 2 ) Override (plugged) DIN 3852 M16x1,5; 12 deep 100 Nm 2 ) External control pressure (plugged) DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 1 Pilot pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 4 Load pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) 1 ) centering bore according to DIN 332 (thread according to DIN 13) 2 ) please observe the general notes for the max. tightening torques on page 32

27 E /03.06 A7VO Bosch exroth AG 27/32 nit Dimensions, ize 107 D Power control with pressure cut-off D 138 Before finalizing your design, please request approved installation drawing. Dimensions in mm. DH1 Power control with pressure cut-off, stroke limiter X 1 18 D (X1) 295 (Y3) X D/DG Pressure control, remote controlled D Pressure control with load sensing D DG X 4 D X (DG) 145 (D) HD1/HD1G/HD2/HD2G Hydraulic control for pressure cut-off, remote controlled 306 EP/EPG Electrical control for pressure cut-off, remote controlled 306 X (X1) 225 (Y3) 254 (A1) 259 (X3) X (Y3) 254 (A1) 259 (X3)

28 28/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 160 Before finalizing your design, please request approved installation drawing. Dimensions in mm. Power control Note: All control versions are shown with clockwise direction of rotation (T1) T ø ø ' Y ø224 ø max Flange IO (X3) 331 (A1) View Y clockwise rotation View Y counter-clockwise rotation T 1 T ø32 40 ø A B

29 E /03.06 A7VO Bosch exroth AG 29/32 nit Dimensions, ize 160 haft ends Before finalizing your design, please request approved installation drawing. Dimensions in mm. Z plined shaft DIN 5480 W45x2x30x21x9g P Parallel keyed shaft DIN 6885, A14x9x M16x2 1 ) 2 ) ø ø ø M16x2 1 ) 2 ) 90 Ports A, B ervice line ports (high pressure series) AE J /4 in Fastening thread DIN 13 M14x1,5; 19 deep 2 ) uction port (standard series) AE J518 3 in Fastening thread DIN 13 M16x1,5; 24 deep 2 ) Bearing flushing (plugged) DIN 3852 M22x1,5; 14 deep 210 Nm 2 ) Air bleed (plugged) DIN 3852 M26x1,5; 16 deep 230 Nm 2 ) High pressure (plugged) DIN 3852 M16x1,5; 12 deep 100 Nm 2 ) T 1 Pilot fluid drain (plugged, only D,..D.. open) DIN 3852 M12x1,5; 12 deep 50 Nm 2 ) Override (plugged) DIN 3852 M16x1,5; 12 deep 100 Nm 2 ) External control pressure (plugged) DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 1 Pilot pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) X 4 Load pressure DIN 3852 M14x1,5; 12 deep 80 Nm 2 ) 1 ) centering bore according to DIN 332 (thread according to DIN 13) 2 ) please observe the general notes for the max. tightening torques on page 32

30 30/32 Bosch exroth AG A7VO E /03.06 nit Dimensions, ize 160 D Power control with pressure cut-off D Before finalizing your design, please request approved installation drawing. Dimensions in mm. DH1 Power control with pressure cut-off, stroke limiter (X1) 334 (Y3) X 1 D X D/DG Pressure control, remote controlled D Pressure control with load sensing 392 X 4 D 329 X (DG) 155 (D) D DG HD1/HD1G/HD2/HD2G Hydraulic control for pressure cut-off, remote controlled 348 EP/EPG Electrical control for pressure cut-off, remote controlled X 3 A X (X1) 253 (Y3) 290 (A1) 294 (X3) X (Y3) 290 (A1) 294 (X3)

31 E /03.06 A7VO Bosch exroth AG 31/32 Installation Notes General During commissioning and operation, the axial piston unit must be filled with hydraulic fluid and air bled. This is also to be observed following a relatively long standstill as the system may empty via the hydraulic lines. The leakage fluid chamber is internally connected to the suction chamber. A leakage fluid line to the tank is not required. Exception: Operation with pressure control or pressure cut-off. In all operating states, the suction line must flow into the tank below the minimum fluid level. The minimum suction pressure at port must not fall below 0,8 bar absolute. Installation position As to the examples mentioned below. Further installation positions are possible upon consultation. Installation below the tank (standard) Pump below minimum fluid level in tank. ecommendation installation position: 1 and Installation position Air bleed Filling , 2 4

32 32/32 Bosch exroth AG A7VO E /03.06 General Notes The A7VO pump is designed to be used in open circuits. Project planning, assembly and commissioning of the pump require the involvement of trained personnel. The working and functional ports are only designed to accommodate hydraulic piping. There is a danger of burns from the pump and especially the solenoids during and shortly after operation. uitable safety precautions, e.g. protective clothing plan. The characteristic curve may shift depending on the operating status (operating pressure, fluid temperature) of the pump. Tightening torques: - The tightening torques specified in this data sheet are maximum values and may not be exceeded (maximum value for screw thread). Manufacturer specifications for the max. permissible tightening torques of the used fittings must be observed! - For DIN 13 fastening screws we recommend checking the tightening torque individually according to VDI 2230 Edition The data and information contained herein must be adhered to. Bosch exroth AG Hydraulics Product egment Axial Piston nits Elchingen Plant Glockeraustrasse Elchingen, Germany Phone +49 (0) Facsimile +49 (0) info.brm-ak@boschrexroth.de This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch exroth AG. It may not be reproduced or given to third parties without its consent. The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging. ubject to change.