A4VG125 Polit Hydraulic Charge Pump Excavator Rebuild For Honing

Rexroth A4VG125 Charge Pump Hydraulic Piston Pump Parts Hydraulic Polit Pump,Gear Pump

Product details:

In the oil source of hydraulic system or hydraulic test bench, it is often encountered that the main pump needs to be supplied by the charge pump. For example, in order to determine the various characteristics of the pump under the conditions where the pressure difference between the inlet and outlet is zero (△P=0), it is necessary to use a charge pump to supply oil to compensate for the pressure loss caused by the test device (various valves and pipes) . In systems that use charge pumps to supply oil, there are often situations where the main pump runs dry or lacks oil due to operator negligence or accidental failures of electrical and hydraulic components. The result is very serious.

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Specifiions:

Each type of charge pump product series derives multiple connection methods: there are tandem pumps and no tandem pumps at the back end. In the selection, it is necessary to accurately select the type, serial number, number of teeth of the string or not to fit the accurate use; the product is 84% at a pressure of 6Mpa and a temperature of 55° at 1000rpm.

Appliion

The charge pump series products are used in Rexroth oil pumps as a supporting operation for control and charge pumps in a closed system

Product functions and features:

1. Provide cooling oil to the system to reduce the temperature of the system.

2. Maintain the pressure of the main system loop,

3. And provide the operating pressure to the control loop, the operating pressure of the system is generally designed to be the same as the replenishing pressure.

4. Replenish oil loss from internal leakage. In order to avoid damage to the transmission under any driving and braking conditions, the charge pressure must be set at the specified pressure.

5. The charge pump is generally a gear pump or an external gear pump or a cycloid gear fixed pump, which is installed on the main pump and driven by the main pump's main shaft. The pressure of the charge pump is limited by the charge relief valve.

6. The standard charge pump is suitable for most pumps. If the displacement of the charge pump is insufficient, it is necessary to increase the displacement of the charge pump or install a gear pump in the auxiliary spline to provide the necessary Extra oil

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