HMF055-02 HMV75-02 HPV135-02 Linde High Pressure Motor Pump

Product Overview

The HMF055-02 0001 / HMV75-02 2571 / HPV135-02 belongs to the Linde Hydraulics Series 02 high-pressure axial piston motors and pumps. These units offer true drop-in interchangeability with original Linde products—SAE-standard mounting flanges and ports—so no piping modifications are required. Every unit is 100% tested under simulated operating conditions to guarantee reliable performance in high-pressure closed or open circuits. Featuring swashplate design, the series supports fixed displacement (HMF/HMA) and variable displacement (HMV/HMR/HPV) versions with high starting torque, smooth low-speed operation, high power density, and dynamic response, ideal for propel and working hydraulic systems.

Technical Specifications 

• Model: HMF055-02 / HMV75-02 / HPV135-02 (Series 02)
• Displacement: HMF055 54.7 cm³/rev; HMV75 75.9 cm³/rev; HPV135 135.7 cm³/rev
• Nominal pressure: 420–450 bar
• Peak pressure: 500 bar
• Maximum operating speed: HMF055 approx. 4300 rpm; HMV75 approx. 3800 rpm; HPV135 approx. 3000 rpm
• Control type: Fixed displacement / variable (hydraulic, electro-hydraulic servo, etc.)
• Weight: approximately 28–72 kg (depending on size)
• Housing pressure: max. 2.5 bar
• Circuit compatibility: Open and closed

Key Technical Advantages

1. Precision swashplate and rotary group: High-hardness pistons and optimized valve design deliver high volumetric efficiency, smooth low-speed running, and high starting torque.
2. High power density and compact design: Series 02 achieves high torque output in a small package, suitable for space-constrained applications.
3. Dynamic response and reliable control: Precise servo control with fast response and multiple control options.
4. Drop-in interchangeability and long service life: SAE-standard interfaces, hydrodynamic bearings, and quality materials ensure durability.
5. High-pressure capability and low noise: Rated 450 bar, peak 500 bar with noise-optimized design.

Application Areas

• Propel drives and working circuits on construction machinery
• Cranes and aerial work platforms
• Agricultural and forestry equipment
• Material handling and industrial vehicles
• Closed-circuit hydrostatic transmission systems

Expert Maintenance Tips

Ensure suction/charge lines are adequately sized; route case drain independently with pressure not exceeding 2.5 bar. Fully bleed the system before first start-up and maintain high fluid cleanliness (ISO 4406). Use recommended viscosity hydraulic oil and inspect filters and oil temperature regularly. Set variable controls correctly. For long-term storage, fill with clean oil and seal all ports to prevent corrosion.