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High-Performance Rexroth LA10V31 Hydraulic Pump – China Factory Suppliers for Variable Displacement Solutions

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Product Description

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Introducing our advanced Variable Displacement Pump, featuring an axial piston rotary group designed specifically for hydro-static drives in open circuits. This high-performance pump, produced by top suppliers in China, offers a flow rate that is directly proportional to drive speed and displacement.

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Key features include:

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  • Infinitely variable flow control through adjustable swash-plate angle.
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  • Innovative hydro-statically unloaded cradle bearing for enhanced efficiency.
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  • Integrated port for measurement sensors located on the high-pressure port.
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  • Designed for low noise levels and minimal pressure pulsation.
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  • Exceptional high efficiency and resistance to cavitation, ensuring reliable operation even during suction pressure drops and housing pressure peaks.
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  • Universal through drive capability for versatile applications.
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As a leading factory in the industry, we pride ourselves on delivering quality, durability, and unmatched performance. Choose our Variable Displacement Pump for your hydro-static drive needs and experience the difference that expert manufacturing and innovative design can make.

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    Contact us
    Product Details

    Rexroth-Hydraulic-Pump-Piston-Pump-LA10V31-series(2)
    Rexroth-Hydraulic-Pump-Piston-Pump-LA10V31-series(4)
    Rexroth-Hydraulic-Pump-Piston-Pump-LA10V31-series(5)
    Rexroth-Hydraulic-Pump-Piston-Pump-LA10V31-series(7)

    Model Designation

    LA10VS Model variable pump, swashplate design
    Rated pressure 280bar
    Peak pressure 350bar
    O Mode of operation pump, open circuit
    28 Displacement: 18, 28, 45, 71, 100, 140 (ml/r)
    DR Mode of operation 18 28 45 71 100 140
    DG √ √ √ √ √ √
    DR √ √ √ √ √ √
    DRG √ √ √ √ √ √
    DFR √ √ √ √ √ √
    DFR1 √ √ √ √ √ √
    DFLR √ √ √ √ √
    31 Product series: 31 series
    R Direction of Rotation
    R--Clockwise
    L--Anti-clockwise
    P Seals
    P--Perbunan
    V--Viton
    S Shaft end 18 28 45 71 100 140
    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 √ √
    C Mount flange 18 28 45 71 100 140
    A-ISO ISO 2-hole √ √ √ √ √
    C-SAE SAE 2-hole √ √ √ √ √
    B-ISO ISO 4-hole √
    D-SAE SAE 4-hole √
    62 Port of service lines 18 28 45 71 100 140
    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) √ √
    N00 With through drive to accept an axial piston pump or gear pump 18 28 45 71 100 140
    Without through drive √ √ √ √ √ √ N00

    Technical Data

    Operating pressure range-inlet Operating pressure range-inlet
    Absolute pressure at pore S Pressure at pore 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 (△P=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 (△P=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
    LA10VSO 32 Series Axial Piston Variable Pump

    Operation Mode

    DG - Two-point control, direct operated
    LA10VSO 32 Series Axial Piston Variable Pump detail
    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.

    LA10VSO 32 Series Axial Piston Variable Pump detail (1)
    LA10VSO 32 Series Axial Piston Variable Pump detail (2)
    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.

    LA10VSO 32 Series Axial Piston Variable Pump detail (3)
    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.

    LA10VSO 32 Series Axial Piston Variable Pump detail (4)
    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.

    LA10VSO 32 Series Axial Piston Variable Pump detail (5)

    Dimension & Size

    LA10VSO 32 Series Axial Piston Variable Pump detail (6)
    LA10VSO 32 Series Axial Piston Variable Pump detail (7)
    LA10VSO 32 Series Axial Piston Variable Pump detail (8)
    LA10VSO 32 Series Axial Piston Variable Pump detail (9)
    LA10VSO 32 Series Axial Piston Variable Pump detail (10)
    LA10VSO 32 Series Axial Piston Variable Pump detail (11)

    Frequently Asked Questions (FAQ)

    Q: What are the rated and peak pressure limits for the LA10VS variable pump?
    A: The LA10VS variable pump features a rated pressure of 280 bar and a peak pressure of 350 bar.
    Q: Which displacements are available for the LA10V31 series hydraulic pump?
    A: The pump displacements include 18, 28, 45, 71, 100, and 140 ml/r.
    Q: What is the difference between the DR and DRG operation modes?
    A: The DR mode provides standard pressure control to keep system pressure constant. The DRG mode enables remote pressure control by connecting an external overflow valve to the oil port X.
    Q: How does the DFLR control mode operate?
    A: The DFLR mode controls pressure, flow, and power. It adjusts the angle of the axial piston element as working pressure changes to maintain a constant driving torque, ensuring the product of flow and pressure remains constant.
    Q: What mounting flange standards does the LA10V31 series use?
    A: Depending on the pump size, it supports A-ISO ISO 2-hole, C-SAE SAE 2-hole, B-ISO ISO 4-hole, and D-SAE SAE 4-hole mounting flanges.
    Q: What is the maximum speed capability of the size 18 pump compared to the size 140 pump?
    A: The maximum speed for the size 18 pump is 3300 rpm, whereas the larger size 140 pump has a maximum speed limit of 1800 rpm.

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