A10VSO45DFR1/31R-PPA12N00A10VSO 45 DFLR/31R-PPA12N00 A10VSO 45 DFLR/31L-PPA12N00 A10VO 45 DFR/31R-VSC12K01 A10VO 45 DFR/31L-VSC12K01 Rexroth variable piston pump

A10VO100EP2D/53R-VRC12K15 A10VSO18DR/31L-VSC62NOO A10VSO140DFLR1/31R-PPB12KO1AA10VSO71DFLR/31R-PPA12N00 A10VSO45DFR/31R-PPA12N00 German Rexroth variable piston fluid pump

FAQ;

1. Basic Product Information

Q1: What type of product is the A10VSO45 pump, and what is its working principle?

Q2: What are the rated pressure and peak pressure of the A10VSO45 pump?

2. Performance & Troubleshooting

Q1: What causes insufficient output flow or no oil discharge from the pump?

• Inadequate suction: This may result from excessive resistance in the suction line (e.g., undersized or overly long hoses), insufficient oil replenishment (e.g., pump speed exceeding the rated limit, low oil level in the tank), air leakage in the suction line (loose connections or damaged seals), or a clogged suction filter.
• Excessive internal leakage: Possible issues include scratches on the valve plate, poor sealing of the check valve in the variable displacement mechanism, or sand holes/abrasion marks on the mating surfaces of the pump body and valve plate.
• Mechanical misalignment: The swashplate may be set to a minimum tilt angle (resulting in minimal displacement), or the motor may be running in the reverse direction (preventing normal piston movement).

Q2: Why does the pump produce vibration and abnormal noise during operation?

• Mechanical issues: Misalignment between the pump shaft and motor shaft (critical for high-speed or high-power applications), damaged bearings in the rotating shaft or faulty couplings, or loose mounting bolts.
• Wear-related noise: Excessive wear of the bushings at the variable displacement head. This often occurs if the pump is started without sufficient oil in the power unit (causing dry friction at the bushing interface) or if the lubricating oil is contaminated with impurities.

Q3: What leads to overheating of the A10VSO45 pump?

1. Mechanical friction: Increased friction between moving parts such as bearings, pistons, and the cylinder block (often due to wear, lack of lubrication, or misalignment).
2. Fluid friction: Excessive resistance in the oil flow path (e.g., narrow hoses, blocked valves) or turbulent flow inside the pump.
3. Excessive system pressure: A clogged oil filter can cause a pressure buildup in the system, forcing the pump to work under overload and generating excess heat.

Q4: Why does the pump still discharge oil when in the neutral position (zero-displacement setting)?

• Malfunction of the displacement controller: The controller may be misaligned, loose, or damaged. In this case, re-calibrate the controller to the neutral position, tighten loose components, or replace the faulty controller.
• Reduced angle retention force or wear: Insufficient force to keep the swashplate at zero tilt, or excessive wear on the swashplate’s trunnion (pivot point), causing the swashplate to maintain a small tilt angle even in neutral.