XHS Series Radial Piston Hydraulic Motor Replacement | High-Torque Poclain-Type Motor

Genlu Hydraulic proudly introduces our industrial-grade XHS Series radial piston hydraulic motors. Engineered for heavy-duty mobile machinery and industrial drive systems, this series offers elite starting torque, superior low-speed stability, and a compact, integrated footprint. We specifically highlight our supply capability for precision-tuned units such as the XHS05-60, XHS05-75, XHS05-90, and XHS05-110.

The XHS series utilizes a classic radial piston design with a rotating cylinder block and stationary distribution plate, delivering high mechanical efficiency. Genlu guarantees 100% Drop-in Interchangeability across mounting footprints, shaft splines, port configurations, and displacement performance compared to original XHS Series assemblies. Every motor undergoes 100% full-load and volumetric-efficiency verification on our digital test benches, certifying rugged, consistent performance for your most demanding applications.

Technical Specifications 

• Product Series: XHS Series Radial Piston Motor

• Representative Models: XHS05-60, XHS05-75, XHS05-90, XHS05-110

• Displacement Range: 60 cc/rev to 110 cc/rev

• Nominal Operating Pressure: 250 bar (Continuous)

• Peak Transient Pressure: 350 bar

• Max Output Torque: Up to 450 – 800 Nm

• Max Speed: 400 – 800 rpm

• Bearing Design: Integrated heavy-duty cylindrical roller bearings

• Approximate Unit Weight: 25 – 35 kg

Key Technical Advantages:

• Direct-Drive Capability: The radial piston geometry supports high radial loads, eliminating the need for bulky external gearboxes and simplifying drivetrain design for mobile equipment.

• Superior Low-Speed Smoothness: Optimized port timing and precision piston-to-bore tolerances ensure continuous, smooth torque delivery even at speeds as low as 5 rpm, eliminating stick-slip issues.

• Modular Seal System: Features high-pressure, wear-resistant shaft seals and dedicated case-drain pathways, preventing seal failures caused by backpressure fluctuations during frequent cycling.

• High-Pressure Shock Resilience: Precision-ground piston/bore sets with advanced wear-resistant coatings resist damage from pressure transients, extending service life during heavy-load startups and rapid stops.

Application Areas:

• Mobile Drive Systems: Mini-excavators, skid-steer loaders, and compact off-highway vehicles.

• Material Handling: Small industrial conveyor drives and winch assemblies.

• Municipal Equipment: Street sweepers and compact road construction machinery.

Expert Maintenance Tips:

• Proper Case Drain Routing: Always route the case drain directly to the reservoir via a dedicated line. Connecting it to a common return line will result in internal housing pressure buildup and premature seal failure.

• Strict Fluid Cleanliness: Radial piston components are highly sensitive to particulate contaminants. Maintain ISO 4406 18/16/13 standards and monitor return-line filter differential pressure regularly.

• Avoid Dry-Running: Always pre-fill the motor housing with clean fluid before installation. If the machinery is to be towed while inactive, ensure a bypass circuit is open to prevent dry-friction damage to the piston/bore surfaces.