OMFB HDT Series Piston Pump Replacement | HDT-ISO-108D High Pressure Hydraulic Pump

Genlu Hydraulic proudly introduces our industrial-grade HDT Series high-pressure bent-axis piston pumps. This series is fully engineered to match global standards, providing a seamless, high-value drop-in replacement for OMFB original equipment. We specifically highlight our supply capability for precision-tuned units such as the HDT-ISO-108D(R) (602-001-11083) and HDS 64 D (108-015-06035).

Designed for the rigorous demands of tipper trucks, refuse compactors, and heavy-duty mobile hydraulics, the HDT series combines brute force with extended operational longevity. Genlu guarantees 100% Drop-in Interchangeability across ISO mounting flanges, DIN 5462 shaft splines, and porting configurations compared to original OMFB assemblies. Every pump undergoes 100% full-pressure load cycling and seal-integrity verification on our digital test benches, certifying consistent performance in high-frequency start-stop applications.

Technical Specifications 

• Product Series: OMFB HDT / HDS Series High-Pressure Bent-Axis Piston Pump

• Representative Models: HDT-ISO-108D(R) (602-001-11083), HDS 64 D (108-015-06035)

• Geometric Displacement: 108 cc/rev (HDT-108D) / 64 cc/rev (HDS 64 D)

• Nominal Operating Pressure: 350 bar

• Peak Transient Pressure: 400 bar

• Maximum Rated Speed: 1800 – 2000 rpm (Application-dependent)

• Rotation Direction: Unidirectional (CW/CCW options)

• Mounting Interface: ISO 4-bolt Flange

• Drive Shaft Specification: 8x32x36 DIN 5462 Splined Shaft

• Housing Material: High-strength ductile cast iron

Key Technical Advantages:

• High-Dynamic Bent-Axis Architecture: The classic bent-axis piston design minimizes clearance losses between pistons and the valve plate, ensuring optimal volumetric efficiency even under sustained high-pressure operation.

• Reinforced Ductile Iron Housing: Engineered for structural rigidity, the high-density ductile iron housing withstands massive torque shocks common in PTO-driven mobile machinery, eliminating the risk of stress-related casing fractures.

• CFD-Optimized Flow Distribution: Internal ports are engineered through Computational Fluid Dynamics (CFD) to minimize vortex loss. This boosts suction efficiency and significantly reduces fluid noise during high-speed operation.

• Heavy-Duty Tapered Roller Bearings: The main shaft is supported by reinforced double-row tapered roller bearings capable of absorbing heavy radial and axial thrust loads, ensuring a service life exceeding 5000 hours even in demanding direct-drive scenarios.

Application Areas:

• Mobile Machinery: Hydraulic power for tipper trucks, refuse compactors, and truck-mounted cranes.

• Specialized Heavy Transport: Municipal sanitation trucks, fire trucks, and high-pressure spray equipment.

• PTO-Driven Hydraulics: Diverse high-pressure hydrostatic circuits powered by standard vehicle take-offs.

Expert Maintenance Tips:

• Maintain Unrestricted Case Drain Routing: The HDT series generates substantial internal heat during operation. Always route the case drain line independently back to the reservoir with an appropriately sized hose. Connecting it to the main return line will cause casing backpressure, leading to instant shaft seal failure.

• Enforce Pre-Operational Priming: The rotating group is sensitive to dry-start scuffing. Always fill the housing with clean hydraulic fluid through the highest drain port after mounting to ensure the pistons are primed before initial startup.

• Monitor PTO Coupling Integrity: Excessive backlash in the PTO coupling can lead to high-frequency pulse vibrations. Regularly grease the coupling interface and inspect for wear to prevent fatigue damage to the pump’s drive shaft splines.