Rexroth A10VSO71 Hydraulic Pump High Pressure Industrial Gear Pump

The A10VSO71 is a variable displacement axial piston pump with a swashplate design, designed for hydrostatic transmission in open circuits. It offers stepless flow regulation by adjusting the swashplate angle and is widely used in high-power hydraulic systems for industrial and mobile applications, such as construction machinery, metallurgy, and marine equipment.

• Pressure Range: Nominal pressure of 280 bar, peak pressure of 350 bar
• Flow Control: Flow is proportional to drive speed and displacement, adjustable via swashplate angle
• Efficiency: Energy saving modes reduce energy consumption by 30% compared to fixed pumps
• Durability: Fluorocarbon (FKM) shaft seals, fluid hydrostatic bearing technology, and low noise design
• Versatility: Supports through shaft drive for additional pump installation

The series offers multiple control modes:

• DR/DRG: Pressure control (direct or remote)
• DFR: Pressure and Flow Composite Control
• DFLR: Integrated Control of Pressure, Flow, and Power
• ED/EP: Electrohydraulic proportional control

• Orientation: Prefer horizontal shaft mounting; Vertical installation requires rough oil priming and air blending
• Drain Lines: The shell drain ports (L1/L2) must be separately led to the fuel tank, with a back pressure of ≤ 0.5 bar
• Suction Pressure: Maintain ≥ 0.8 bar absolute at the inlet (≥ 0.5 bar during cold start)
• Piping: Use SAE standard flange ports and vibration solubilizing connectors

• Low/No Flow: Check for clogged suction pipe, leaks, or low tilt angle of the inclined plate
• Pressure Fluctuations: Inspect to control piston wear or foreign objects entering the variable mechanism
• Overheating: Verify oil cleanliness (NAS ≤ 9) and cooling system
• Leakage: Replace damaged shaft seal or check drain pipe design
• Noise: Ensure proper oil suction pressure and coupling alignment

• Oil Quality: Use ISO VG 46 anti-wear hydraulic oil and regularly test for contamination
• Seals: Inspect shaft seals every 2000 hours to shorten the cycle in high temperature environments
• Long Storage: Drain oil and add rust inhibitor

• Industrial: Metallurgy, presses, plastic injection machines
• Mobile: Concrete pump trucks, excavators, deck machinery
• Energy Sensitive Systems: Cranes, winches with power control requirements

For further details, consult official manuals (e.g., RE92706-01-B) or contact authorized suppliers.