A11VO260 Rexroth Variable Piston Pump 350bar Open Circuit

Product Overview

The A11VO series from Bosch Rexroth comprises open-circuit variable-displacement axial piston pumps of swash-plate design, covering sizes A11VO40, A11VO60, A11VO75, A11VO95, A11VO130, A11VO145, A11VO190, A11VO260 and specific codes such as A11VO260DRS/11R-NPD12N00. Flow is proportional to drive speed and displacement; the swash plate allows stepless adjustment. 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 demanding mobile and industrial high-pressure applications.

Technical Specifications 

• Models: A11VO40 / A11VO60 / A11VO75 / A11VO95 / A11VO130 / A11VO260 (example: A11VO260DRS/11R-NPD12N00)
• Pump Type: Variable displacement axial piston pump (open circuit, swash-plate)
• Geometric displacement: 42 cm³/rev (40), 58.5 cm³/rev (60), 74 cm³/rev (75), 93.5 cm³/rev (95), 130 cm³/rev (130), 260 cm³/rev (260)
• Nominal pressure: 350 bar
• Peak pressure: 400 bar
• Maximum speed (at Vg max): approx. 1800–2000 rpm for A11VO260 (2100–3000 rpm for smaller sizes)
• Control methods: DRS (pressure control with load sensing), DR (constant pressure), LR (power control), etc.
• Weight: approx. 32–125 kg (A11VO260 approx. 125 kg)
• Other: Through-drive capability, optional charge-pump versions (A11VLO)

(Data sourced from official Bosch Rexroth RE 92500 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: DRS load-sensing control automatically adjusts displacement to demand, reducing energy consumption; power and pressure controls protect the drive 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

Construction machinery (excavators, loaders, cranes), agricultural equipment, marine hydraulic systems, industrial power units, material-handling machines and any application requiring 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.