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China Suppliers Rexroth LA10V31 Series Hydraulic Piston Pump - High Efficiency Factory Direct Sale
Model Designation
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LA10VS Model variable pump, swashplate design Rated pressure 280bar Peak pressure 350bar |
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O Mode of operation pump, open circuit |
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28 Displacement: 18, 28, 45, 71, 100, 140 (ml/r) |
| Control Device | Mode of operation | 18 | 28 | 45 | 71 | 100 | 140 |
|---|---|---|---|---|---|---|---|
| DR | DG | √ | √ | √ | √ | √ | √ |
| DR | √ | √ | √ | √ | √ | √ | |
| DRG | √ | √ | √ | √ | √ | √ | |
| DFR | √ | √ | √ | √ | √ | √ | |
| DFR1 | √ | √ | √ | √ | √ | √ | |
| DFLR | √ | √ | √ | √ | √ |
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31 Product series: 31 series |
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R Direction of Rotation R--Clockwise L--Anti-clockwise |
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P Seals P--Perbunan V--Viton |
| Shaft | Shaft end | 18 | 28 | 45 | 71 | 100 | 140 |
|---|---|---|---|---|---|---|---|
| S | P--Metric parallel with key | √ | √ | √ | √ | √ | √ |
| S--SAE SAE splined | √ | √ | √ | √ | √ | √ | |
| R--SAE SAE splined (higher through drive torque) | √ | √ | √ | √ | |||
| K--SAE SAE parallel with key | √ | √ | √ | √ | √ | √ | |
| U--SAE SAE splined reduced dia, NOT for through drive | √ | √ | √ | ||||
| W--SAE Similar to shaft ”u”, higher input torque, not for through drive | √ | √ |
| Flange | Mount flange | 18 | 28 | 45 | 71 | 100 | 140 |
|---|---|---|---|---|---|---|---|
| C | A-ISO ISO 2-hole | √ | √ | √ | √ | √ | |
| C-SAE SAE 2-hole | √ | √ | √ | √ | √ | ||
| B-ISO ISO 4-hole | √ | ||||||
| D-SAE SAE 4-hole | √ |
| Port | Port of service lines | 18 | 28 | 45 | 71 | 100 | 140 |
|---|---|---|---|---|---|---|---|
| 62 | 11--SAE flange rear, fixing thread metric | √ | √ | √ | √ | √ | √ |
| 61--SAE flange rear, fixing thread NUC | √ | √ | √ | √ | √ | √ | |
| 12--SAE flange on opposite side, fixing thread metric | √ | √ | √ | √ | |||
| 62--SAE flange on opposite NUC | √ | √ | √ | √ | √ | √ | |
| 41(91)--SAE flange rear, fixing thread metric (NUC) | √ | √ | √ | ||||
| 42(92)--SAE flange on opposite side, fixing thread metric (NUC) | √ | √ |
| Through Drive | Description | 18 | 28 | 45 | 71 | 100 | 140 | Code |
|---|---|---|---|---|---|---|---|---|
| N00 | With through drive to accept an axial piston pump or gear pump | |||||||
| Without through drive | √ | √ | √ | √ | √ | √ | N00 |
Technical Data
| Operating pressure range-inlet | Operating pressure range-outlet | ||
|---|---|---|---|
| Absolute pressure at port S | Pressure at port B | ||
| Pabs min | 0.8 bar | Nominal pressure | 280 bar |
| Pabs max | 30 bar | Peak pressure Pmax | 350 bar |
| Applications with intermittent operating pressures up to 315 bar at 10% duty are permissible. | |||
| Size | 18 | 28 | 45 | 71 | 100 | 140 | ||
|---|---|---|---|---|---|---|---|---|
| Displacement | Vg max (cm³) | 18 | 28 | 45 | 71 | 100 | 140 | |
| Max. speed | n max (rpm) | 3300 | 3000 | 2600 | 2200 | 2000 | 1800 | |
| Max. output flow | In n max | qv (L/min) | 59.4 | 84 | 117 | 156 | 200 | 252 |
| In 1500rpm | qv (L/min) | 27 | 42 | 68 | 107 | 150 | 210 | |
| Max. power (ΔP=280MPa) | In n max | P max (kW) | 27.7 | 39 | 55 | 73 | 93 | 118 |
| In 1500rpm | P max (kW) | 12.6 | 20 | 32 | 50 | 70 | 98 | |
| Max. torque (ΔP=280MPa) | In Vg max | T max (N.m) | 80.1 | 125 | 200 | 316 | 445 | 623 |
| Weight (approximately) | m (kg) | 12 | 15 | 21 | 33 | 45 | 60 | |
Operation Mode
DG-Two-point control, direct operated
DR--Pressure control
In the control range of the pump, the pressure in the hydraulic system is kept constant. Therefore, the pump only provides the hydraulic oil required for the actuator. Pressure can be set in the control valve.
DRG-- Remote pressure control
The remote control can be realized by connecting an overflow valve with the oil port X. However, the overflow valve is not included in the DRG control of the supply range. DRG control valve core standard pressure is located in 20bar, the pressure difference generated 1.5L/min control flow. For other settings, please use the text description. We recommend using the flowing one as a separate relief valve: according to the RC25402 of DBD6 (hydraulic), or by RC29166 DBETR-SO381, P with throttle hole whose diameter is 0.8 (control). The maximum length of the pipe shall not exceed 2m.
DFR/DFR1-- Pressure/flow control
In addition to the pressure control function, but also through the differential pressure (such as the throttle valve or valve on the pressure difference) to regulate the flow of the pump flow. Pump to provide the oil needed for the actuator. In the DFR1 type, the throttle hole between the oil port X and the fuel tank is blocked.
DFLR-- Pressure/flow/power control
In order to obtain a constant driving torque in the case of working pressure change, by changing the angle of the axial piston element, thus changing the output flow, so that the product of flow and pressure remain constant. Flow control can only be in the constant power control curve.
Dimension & Size
Frequently Asked Questions (FAQ)
Q1: What are the nominal and peak pressure ratings for the LA10VS series pump?
The nominal operating pressure for the LA10VS series variable pump is 280 bar, and the peak pressure is 350 bar. Intermittent operating pressures up to 315 bar at a 10% duty cycle are also permissible.
Q2: What displacement sizes are available for the LA10VS series?
The LA10VS series axial piston pump is available in six displacement sizes: 18, 28, 45, 71, 100, and 140 ml/r.
Q3: How does the DR pressure control mode function?
The DR pressure control mode maintains a constant pressure in the hydraulic system within the control range of the pump. The pump only delivers the amount of hydraulic oil required by the actuators, and the target pressure can be adjusted on the control valve.
Q4: What is the difference between the DFR and DFR1 control modes?
Both modes control pressure and flow using a differential pressure signal to match the actuator's demand. However, in the DFR1 variant, the throttle orifice located between the oil port X and the fuel tank is blocked.
Q5: What is the benefit of using the DFLR control mode?
The DFLR mode controls pressure, flow, and power. It adjusts the displacement angle of the axial piston elements as the working pressure changes to maintain a constant driving torque, keeping the product of flow and pressure constant along the power control curve.
Q6: What mounting flange configurations are supported for size 140 pumps?
For the size 140 pump, the mounting flange options include the B-ISO (ISO 4-hole) and D-SAE (SAE 4-hole) configurations.