Mechanical Engineering Rexroth Hydraulic Pump A10VSO71DFLR/31R-PPA12N00 A10VSO71DR/31R-VPA42N00

Q1: Can this pump be used in mobile machinery (e.g., excavators, loaders), and what are the key considerations?

A21: Yes, but with mobile-specific adaptations:

• Vibration resistance: Install a shock-absorbing mounting bracket (Rexroth part number R901345678) to reduce vibration impact (mobile machinery vibration ≤5 g)
• Oil contamination control: Upgrade to a 10 μm suction filter and 5 μm return filter (mobile environments have higher dust levels)
• Mounting orientation: Use horizontal installation (preferred for mobile) and ensure the case drain line is routed above the oil level
• Protection: Install a steel guard around the pump to prevent damage from debris
• Power matching: Use a diesel engine with a flexible coupling (compensates for engine vibration) and ensure the engine's rated speed matches the pump's 1500 rpm nominal speed

Q2: What are the energy-saving measures when using this pump in hydraulic systems?

A22: Energy efficiency optimization:

• Control parameter adjustment: Set the FR control's pressure limiting value to 10-15% above the system's maximum working pressure (avoids unnecessary pressure relief energy loss)
• Variable speed control: Pair with a frequency converter to adjust motor speed based on flow demand (reduces energy consumption by 30-40% at partial load)
• System integration: Use a load-sensing valve to adjust pump displacement only when the load is active
• Maintenance optimization: Keep oil viscosity within 16-36 mm²/s (reduces friction losses) and ensure all filters are clean (pressure drop ≤0.3 bar)
• Component matching: Select accessories (hoses, valves) with low pressure loss (≤5 bar) to minimize system resistance