A10VSO10 Rexroth Variable Piston Pump 250bar Open Circuit

Product Overview

The A10VSO series from Bosch Rexroth comprises open-circuit variable-displacement axial piston pumps of swash-plate design, covering sizes A10VSO10, A10VSO28, A10VSO45, A10VSO60, A10VSO63, A10VSO85 and specific codes such as A10VSO10DFR1/52L-PUC64N00. Flow is proportional to drive speed and displacement; the swash plate allows stepless adjustment. Designed for open-circuit hydrostatic drives with a wide range of control options. Manufactured to exact OEM dimensions and interfaces for 100% drop-in interchangeability. Every unit undergoes 100% simulated operating-condition testing to verify pressure, flow and sealing integrity under industrial and mobile high-pressure applications.

Technical Specifications 

• Models: A10VSO10 / A10VSO28 / A10VSO45 / A10VSO60 / A10VSO63 / A10VSO85 (example: A10VSO10DFR1/52L-PUC64N00)
• Pump Type: Variable displacement axial piston pump (open circuit, swash-plate)
• Geometric displacement: 10.5 cm³/rev (10), 28 cm³/rev (28), 45 cm³/rev (45), approx. 60–85 cm³/rev (other sizes)
• Nominal pressure: 250 bar (A10VSO10 series 52); 280 bar (larger sizes series 31/32)
• Peak pressure: 315 bar (A10VSO10); 350 bar (larger sizes)
• Maximum speed (at Vg max): 3600 rpm for A10VSO10 (2000–3000 rpm for other sizes)
• Control methods: DFR1 (pressure + flow control), DR (pressure control), DFR, etc.
• Weight: several kg to tens of kg depending on size
• Other: Through-drive capability, SAE/ISO flange and shaft options

(Data sourced from official Bosch Rexroth RE 92713 and related technical documentation.)

Key Technical Advantages

• High-precision swash plate and piston-shoe design: Precision machining and wear-resistant materials deliver high volumetric efficiency and low internal leakage even under continuous high-pressure operation.
• Versatile control options and fast response: DFR1 pressure-flow compensator automatically adjusts displacement to demand, reducing energy consumption and protecting the system.
• Excellent suction characteristics and long-life design: Optimized flow paths and bearing structure support high-speed operation and extended service life.
• 100% drop-in interchangeability and simulated testing: Mounting flange, shaft end and ports match OEM exactly; full duty-cycle validation before shipment ensures sealing integrity and minimizes downtime.

Application Areas

Industrial power units, injection molding machines, presses, auxiliary circuits on construction machinery, marine hydraulic systems and any application requiring medium-to-high-pressure open-circuit variable pumps.

Expert Maintenance Tips

Clean ports and drive shaft thoroughly before installation. Use recommended hydraulic oil and verify system cleanliness. Pre-fill the case with oil before start-up. After replacement, run at low speed under no load, then gradually increase load while checking for noise or leakage. Regularly monitor case pressure and filters; avoid prolonged over-pressure or cavitation. Perform pressure and flow verification tests according to the official Rexroth manual.