A4VSO180DR/30L-PPB25N00 Loader Ship Steel Plant Coal Mine Hydraulic Pump German Rexroth

The Rexroth A4VSO180DR/30L-PPB25N00 is a genuine German-manufactured A4VSO series open-circuit axial piston variable pump, featuring DR constant pressure (pressure compensated) control. With a displacement of 180 cm³/r and PPB25 SAE flange & ports, the pump maintains a preset system pressure by reducing displacement toward zero once the set pressure is reached—delivering only enough flow to maintain the commanded pressure level.

This simple, robust control makes the A4VSO180DR a trusted choice across multiple heavy industries: ship deck machinery, loader/earthmoving auxiliary circuits, steel mill hydraulic power units, and coal mine surface installations. Rated for 350 bar continuous / 400 bar peak, it handles the toughest operating environments with reliability.

The DR control is the most straightforward variable pump control:

• Pump delivers full flow until system pressure reaches the set value
• Once set pressure is reached, the pump automatically reduces displacement to near-zero
• Only enough flow is delivered to compensate for system leakage—minimizing heat generation
• Pressure setpoint is adjusted via a mechanical spring (integral hex adjuster)
• No external pilot or electrical signal required—self-contained operation

This simplicity makes DR the preferred choice for marine, mining, and steel plant HPUs where reliability and ease of maintenance are paramount.

• Ship & Marine: deck crane hydraulics, anchor winch systems, hatch cover HPUs, ballast pump drives
• Loader & Earthmoving (Auxiliary): wheel loader auxiliary circuits, bulldozer implement pumps, grader hydraulic systems
• Steel Plant: rolling mill auxiliary HPUs, furnace door/clamp circuits, coil handling systems, caster segment adjustment
• Coal Mine (Surface): coal preparation plant HPUs, conveyor tensioning, stacker/reclaimer hydraulics, mine winder auxiliary circuits
• General Industrial: hydraulic presses, test benches, machine tool hydraulics

Distributed through Rexroth's authorized global dealer network, including:

• Europe: Germany, Italy, France, UK, Spain, Netherlands, Austria, Switzerland, Poland, Sweden, Norway (marine sector)
• Asia-Pacific: China, Japan, South Korea, India, Taiwan, Thailand, Malaysia, Vietnam, Australia, New Zealand
• Americas: USA, Canada, Mexico, Brazil, Chile (mining & industrial regions)
• Middle East & Africa: UAE, Saudi Arabia, Turkey, South Africa