| series | A4VG_32 Series High Pressure Piston Pumps |
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| Specifications | 28,40,56,71,90,125,180,250 |
| Working pressure | Nominal pressure 40 MPa, peak pressure 45 MPa |
| Control mode: | Characteristic | _Swashplate Axial Plunger Variable Pump for Closed Loop Hydrostatic Transmission |
| NV type, no control device |
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| DG-hydraulic control, direct control | _Flow rate is proportional to driving speed and displacement and can be variable steplessly. |
| EZ-Electric Two-Point Control, Switched Electromagnet |
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| HD-hydraulic control, related to pilot pressure | _The flow rate increases from zero to its maximum with the swashplate swing angle. |
| HW-Hydraulic Control, Mechanical Servo |
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| EP-Electrical Control with Proportional Electromagnet | _The liquid flow direction can be changed smoothly by making the swashplate swing over the middle. |
| DA - Hydraulic control, related to deceleration |
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| _Variable modes that are easily matched with various control and regulation systems; |
| The pump is equipped with two relief valves at the high pressure oil side to protect the hydrostatic transmission (pump and motor) from overloading. |
| High pressure relief valve also has the function of filling valve. |
| _Built-in auxiliary pumps are used as refueling pumps and control pumps. |
| _The maximum filling pressure is limited by a built-in filling relief valve. |
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