Rexroth A4VSO Axial Piston Pump 355ml/rev 280 Bar Hydraulic

A4VSO355LR2G/22L-PPB13N00 A4VSO355DR/22L-PPB25N00 A4VSO250EO2/22L-PPB25N00
A4VSO250EO2/22L-PPB13N00 A4VSO250EO1/22L-PPB25N00 Mining industry high-pressure Rexroth German piston pump variable

FAQ:

Why might multiple A4VSO DR pumps in parallel cause system vibration?

When multiple pumps with standard DR controls are set to the same pressure and run in parallel, slight inherent differences in their response characteristics and pressure settings can cause them to not reduce displacement (cut off) at exactly the same time and rate. This lack of synchronization can lead to interactions between the pumps, resulting in pressure fluctuations and potentially causing severe pipeline vibration.

6. What are the key specifications of the A4VSO series?

• Common Displacement Specifications (ml/rev): 40, 71, 125, 180, 250, 355, 500, 750.

• Nominal Pressure: 350 bar.

• Peak Pressure: 400 bar.

• Bearing: Features a specially designed, long-life, high-precision full roller bearing.

• Shaft: Through-shaft design allows for mounting additional pumps to form a multi-pump group.

7. What should be considered during commissioning and adjustment?

• Alignment: Ensure the coupling between the pump and motor has a gap of 3-5 mm to avoid thrust load on the pump's bearing, which could cause damage.

• Filling & Venting: Before starting, fill the pump casing with clean hydraulic fluid through the drain port to vent air. The drain line should be connected to the highest T port on the pump.

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