描述

Rexroth Axial Piston Variable High Pressure Pump A10VSO A10VSO18/A10VSO28/A10VSO45/A10VSO71/A10VSO100/A10VSO140

Rexroth A10VSO140 140CC Hydraulic Pump – Streamlined Description

The Rexroth A10VSO140 is a 140 cc swashplate axial piston pump for open‑circuit systems, designed for heavy mining and construction equipment. Its variable displacement is achieved by a hydraulic servo piston that adjusts the swashplate angle in real time, matching load demands.

The built‑in SO pressure‑compensation control continuously monitors system pressure. When the load decreases, the control reduces the swashplate angle and displacement to maintain a preset pressure (standard 250 bar, adjustable), cutting overflow losses and heat generation.

Pressure ratings: 280 bar continuous, 350 bar peak. Optimised internal flow paths and precision clearances reduce leakage and friction, improving volumetric and mechanical efficiency.

Reinforced tapered roller bearings handle high axial and radial loads; an independent case drain and full‑pressure lubrication ensure reliable operation under continuous heavy duty. Maintain oil cleanliness to ISO 18/16/13 or better for extended service intervals.

The pump shares a common housing with the A10VO/A10VSO series, allowing quick control‑mode changes by swapping the rear cover. Available controls for mining/construction include: LR (constant power, to prevent engine stall), DFR (electro‑proportional, remote stepless adjustment), and DR (load‑sensing, for multi‑function circuits).

Applications: large excavators, telescopic handlers, forestry harvesters; mining trucks, underground loaders, drilling rigs; injection moulding, die‑casting, hydraulic test benches.

Installation: ensure precise shaft alignment, fill housing with clean oil before first start, and flush the system. Set compensator pressure to the minimum required during commissioning to reduce thermal load.

Common issues: reduced efficiency (contamination/wear), noise (suction restriction or cavitation), and failure to reach set pressure (faulty control spring or blocked orifices).

Check official technical datasheets for Rexroth hydraulic pumps: Bosch Rexroth official website

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