XHS High Pressure Radial Piston Motor | XHS7 Series Replacement

Genlu Hydraulic proudly introduces our XHS Series high-pressure radial piston motors. Specifically engineered for heavy-duty applications in construction machinery, mining equipment, and large-scale industrial rigs, this series leverages a radial piston design to deliver massive torque at low speeds. Our product line covers the full spectrum from XHS05 to XHS9, with specialized optimizations for high-displacement models including the XHS7-2000, XHS7-2500, and XHS7-3000. Genlu unequivocally guarantees 100% Drop-in Interchangeability in mounting dimensions, splined shaft specifications, port configurations, and displacement precision relative to original XHS series standards. Backed by our uncompromising 100% Simulation Load Testing, each unit is validated for start-up torque efficiency, mechanical efficiency at high pressure, and full-cycle durability, ensuring relentless, low-speed/high-torque power for your most demanding industrial applications.

Technical Specifications 

• Product Series: XHS Series High-Pressure Radial Piston Motor

• Size Range: XHS05 – XHS9

• Representative Models: XHS7-2000, XHS7-2500, XHS7-3000

• Rated Operating Pressure: 25 – 31.5 MPa

• Peak Pressure: Up to 40 MPa

• Torque Output: Ultra-high start-up torque for heavy-duty demand

• Speed Characteristics: Low-speed, high-torque with excellent speed stability

• Structural Configuration: Multi-piston radial layout with hydrostatic balanced valving

Key Technical Advantages:

• Low-Speed, High-Torque Performance: The radial piston architecture inherently provides exceptional mechanical efficiency, delivering consistent torque even at creeping speeds and eliminating “stuck-start” issues on heavy loads.

• Hydrostatic Balanced Valving: Critical valving components utilize hydrostatic balancing, drastically reducing friction between moving parts, lowering heat generation, and significantly extending overall motor service life.

• Shock-Load Resilience: Housed in high-strength ductile iron and featuring vacuum-heat-treated internal components, these motors possess superior fatigue and pressure-spike resistance, ensuring reliability under extreme stress.

• Modular Customization: Options available for integrated brakes, rotational sensors, and various mounting flanges, providing the flexibility needed for integration into diverse mobile and industrial hydraulic systems.

Application Areas:

• Mining: Tunnel boring machine drive heads, crusher drives, and large conveyor systems.

• Construction: Rotary drilling rig drives, tracked chassis propulsion, and crane swing systems.

• Port & Logistics: Gantry crane travel drives and marine anchor winches.

• Industrial: Heavy-duty mixing equipment, industrial press drives, and critical closed-loop hydraulic circuits.

Expert Maintenance Tips:

• Case Drain Management: Radial piston motors must maintain a full housing with an independent case drain line back to the reservoir. Never allow back-pressure to develop in the housing, as it will lead to front shaft seal failure.

• Fluid Cleanliness Management: Precision clearances require strict adherence to cleanliness standards. We recommend 20μm filtration, maintaining ISO 4406 18/16/13. Contamination is the leading cause of piston seizure.

• Cold Start Protection: If equipment is stored in low-temperature environments, perform a warm-up circulation cycle before loading to ensure optimal oil viscosity. This prevents damage to the valving components caused by inadequate lubrication during cold start-up.