1.product overview：

characteristic:

-Slant disc axial piston variable displacement pump, used for open circuit hydraulic transmission

-Mainly used in the field of walking machinery

-The pump operates under self-priming conditions, with the fuel tank pressurized or equipped with a built-in booster pump (centrifugal pump)

-Multiple controls to meet different operational requirements

-Even when the pump is running, power control can be adjusted externally

-This pump is equipped with a through shaft drive and can accommodate gears or axial piston pumps of the same specifications (100% through shaft drive)

-The output flow rate is proportional to the driving speed and can vary infinitely between the maximum and zero values

2.Ordering Example

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3.Power Control

LR power control

· LR power control

Power control adjusts the displacement of the pump according to the working pressure, so that the power does not exceed the specified driving power of the pump at a constant driving speed

· LRDS power control with pressure cutoff and load sensing

Load sensing control is a type of flow control that adjusts pump displacement based on load pressure to match the flow requirements of the actuator.

·LRU1/2電氣行程限制器（正特性)

Control the pump swing towards a larger displacement as the pilot pressure increases fromV_{g min  to} V_{g max}

DR power control

· DRPower Control

Even under changes in flow rate, this pressure control can maintain a constant pressure in the hydraulic system.  Variable displacement pumps only provide the hydraulic oil required by the actuator. If the working pressure exceeds the set pressure of the pressure control valve, the pump's displacement will automatically swing back until the pressure deviation is corrected.

· DRSPressure control, with load sensing control

Load sensing control is a type of flow control that adjusts displacement based on load pressure to meet the flow requirements of the actuator

· DRGPressure control, remote control

The remote pressure cut-off regulator adjusts the pressure setting value through an independently installed relief valve. The pilot flow of this relief valve is provided by the fixed throttling width in the control module, and the pressure value of this relief valve depends on the spring force of the control valve core.

4.Technical Parameter

Working pressure range

Value Table

Theoretical value, without considering efficiency and tolerance: the value is rounded

1) All values are valid for an absolute pressure (Pabs) of 1 bar at the oil suction port S and when working with mineral oil.

2) All values are valid for an absolute pressure (Pabs) of at least 0.8 bar at the oil suction port S and when working with mineral oil.

3) All values apply to situations where Vg ≤ Sg max or where the inlet pressure Pabs at the suction port S increases

4) Allowable angular acceleration or speed variation is only applicable to single pumps and not applicable to combination pumps.

The load on the connecting components (such as shaft drives) should be considered separately.

When f<flimit, △ n specified in the table is allowed. When f>flimit, the allowable angular acceleration cx in the table will limit the range of velocity variation,

△nperm = 3.04·α/f

Calculation of rated value:

5.Components and specifications dimensions

LRDCS

Power control LR, with pressure cut-off D and load sensing control S

6.Dimensions/shaft extension specifications

Dimension

7.Valve control mode size

LRDS
Power control LR, with pressure cut-off D and load sensing control S