HMV75-02 Linde Hydraulic Motor 420Bar

Product Overview

The HMV75-02 is a heavy-duty axial variable displacement piston motor engineered on the proven Linde Hydraulics 21° swashplate technology platform. Designed specifically for high-pressure closed and open-circuit hydrostatic transmissions, this motor covers cross-reference numbers including HMV135-02, H2X233U02294, and 0001HYX235E03058, offering 100% direct drop-in interchangeability with OEM Linde motors. Every manufactured unit undergoes 100% full-load simulated factory testing prior to dispatch, guaranteeing superior volumetric efficiency, excellent starting torque, and smooth operation under severe working conditions.

Technical Specifications

• Primary Model Code: HMV75-02 (Cross-reference: HMV135-02, H2X233U02294, 0001HYX235E03058)

• Brand Platform: Linde Hydraulics HMV 21° Swashplate Series

• Motor Design: Swashplate Axial Variable Displacement High-Pressure Motor

• Maximum Displacement: 75.9 cm³/rev

• Rated Continuous Pressure: 420 bar (6090 psi)

• Peak Operating Pressure: 500 bar (7250 psi)

• Maximum Drive Speed: 4100 rpm

• Control Types: Hydraulic Proportional (H2) / Electrical Proportional (E2) / Minimum Displacement Cut-off

• Unit Weight: Approx. 32 kg

Key Technical Advantages

• 21° Swashplate Power Density: Optimized kinematics combined with a 21° swashplate angle provide maximum torque output per unit mass and outstanding low-speed breakaway characteristics.

• Precision Nitrided Bimetallic Tribology: Cylinder blocks and piston shoes utilize high-strength nitrided steel paired with sintered bronze valve plates, micro-ground to achieve zero internal bypass leakage and resist thermal galling under continuous 420 bar loads.

• 100% Direct Drop-in Fit: Flange mounting patterns, shaft splines, main high-pressure ports, and pilot control connections match original Linde specifications exactly for effortless installation without plumbing modifications.

• 100% Simulated Factory Load Testing: Dynamically tested under maximum working pressure and rated RPM on automated test benches to verify zero external leakage and rapid displacement response.

Application Areas

• Construction Machinery Drives: Main hydraulic travel drives for crawler excavators, rotary drilling rigs, aerial work platforms, and wheel loaders.

• Agricultural & Heavy Hydraulics: Hydrostatic traction drives for self-propelled combine harvesters, agricultural sprayers, and forestry equipment.

Expert Maintenance Tips

Flush the hydraulic main circuit thoroughly and replace all fluid filters prior to installing the motor. Maintain oil cleanliness strictly at ISO 18/16/13 (NAS Class 8) or cleaner using ISO VG 46/68 anti-wear hydraulic oil. Always pre-fill the motor housing completely with clean hydraulic oil through the highest case drain port before initial start-up, perform short cranking cycles to bleed trapped air, and protect friction pairs against dry wear.