Mechanical Axial Piston Pump A4VSO40DR/10L-PPB25N00 A4VSO40DR/10L-PPB25N00 A4VSO40DR/10L-PPB13N00

Q: How to protect the pump from sand and dust in desert mining applications (e.g., sandstorms)?

A: Desert environment protection requires multi-layered defense against abrasive particles:

• Intake System Upgrade: Replace the standard tank breather with a triple-stage filter (Rexroth R901423567)
• Mechanical Sealing: Install a labyrinth dust cover (stainless steel) on the pump's drive shaft
• Filtration Enhancement: Install a 25μm inline filter (Rexroth DF 200) in the pressure line
• Maintenance Protocol: Shorten oil change intervals to 1.5 months and clean filters daily during sandstorms
• Coating Protection: Apply a ceramic-based anti-abrasion coating (Rexroth WearShield 3000) to the pump housing

These measures extend pump life in deserts by 3x compared to standard configurations.

Q: What modifications are needed for the pump to operate in cold regions (e.g., Siberia, -40°C to -10°C)?

A: Cold-region adaptation focuses on preventing oil viscosity issues and seal hardening:

• Oil Selection: Use ultra-low-temperature hydraulic oil (Rexroth HLP 32 LT)
• Preheating System: Install a 5kW electric heater (Rexroth HT 050) in the tank
• Seal Upgrade: Replace NBR/FKM seals with HNBR seals (order code suffix "HN")
• Line Insulation: Wrap the suction and pressure lines with foam insulation
• Startup Procedure: Activate the heater 30 minutes before startup; jog the motor 10 times

These modifications ensure reliable startup and operation in extreme cold.