OMFB HDS Series Piston Pump | HDS40 HDS47 HDS55 HDS64 | ISO 7653 32X36

The OMFB HDS Series from LIC Hydraulic represents the industry standard for high-pressure bent-axis piston pumps in the mobile hydraulic sector. Covering sizes HDS 40, 47, 55, and 64, this series is specifically designed for truck Power Take-Off (PTO) applications. Models like the HDS 47 D-R ISO comply with ISO 7653 mounting standards and feature the robust $32\text{x}36$ spline shaft. We guarantee 100% mechanical interchangeability and subject every unit to 100% simulated high-load testing, ensuring professional-grade reliability at a continuous $350\text{ bar}$ rating.

Technical Specifications

• Displacements: $40\text{cc}, 47\text{cc}, 55\text{cc}, 64\text{cc}$

• Mounting Standard: ISO 7653 (4-bolt)

• Drive Shaft: DIN 5462 / ISO 14 ($32\text{x}36$ Spline)

• Porting Options: BSP (G) or UNF threads available

• Rotation: Configurable Right-hand (D-R) or Left-hand to match your PTO direction

• Pressure Rating: Continuous $350\text{ bar}$ ($5000\text{ psi}$); Peak up to $400\text{ bar}$

Key Technical Advantages

• Bent-Axis High Efficiency: The bent-axis geometry provides a superior power-to-weight ratio and higher mechanical efficiency than traditional swashplate pumps, minimizing heat generation under full load.

• Compact & Rugged Design: Engineered for the harsh under-chassis environment of commercial trucks. The high-tensile housing is built to withstand frequent hydraulic spikes and heavy vibrations.

• Wide Temperature Resilience: Precision-hardened internal components ensure consistent lubrication and sealing performance across extreme seasonal temperatures, significantly extending the Mean Time Between Failures (MTBF).

• Versatile Field Conversion: OMFB’s clever design allows for easy rotation direction changes on-site, providing flexibility for different vehicle configurations and reducing inventory requirements.

Application Areas

• Tipping Trucks: Hydraulic lifting systems for heavy-duty dump trucks.

• Refuse Vehicles: Compression and lifting logic for garbage compactors and sweepers.

• Truck-Mounted Cranes: Power source for mobile lifting equipment and recovery vehicles.

• Forestry & Agriculture: Grab loaders, timber trucks, and tractor auxiliary circuits.

Expert Maintenance Tips

• Avoid Cavitation: Ensure the suction line is unrestricted and adequately sized. Bent-axis pumps are sensitive to inlet vacuum; cavitation will lead to rapid pitting on the piston shoes and valve plate.

• PTO Engagement Logic: Always engage the PTO with the clutch fully depressed. High-torque shock loads from improper engagement can shear the $32\text{x}36$ spline shaft or damage the internal gear set.

• Filtration Standard: Maintain oil cleanliness at ISO 4406 18/16/13. Using high-quality anti-wear hydraulic oil is critical for protecting the precision-lapped surfaces of the bent-axis assembly.