HMF105-02 2508 Linde Fixed Displacement Piston Motor 105 cm³ 450 bar

Product Overview

The HMF105-02 2508 (P/N 5469661251) belongs to the Linde HMF-02 series of high-pressure fixed displacement axial piston motors (sizes covering HMF28, HMF35, HMF75, HMF105, HMF135). Featuring a swash-plate design for open and closed circuit systems, these motors offer excellent low-speed stability and high starting torque. Fully interchangeable with genuine Linde units, they enable direct drop-in replacement without modification to mounting interfaces or piping. Every unit undergoes 100% simulated operating-condition testing to ensure high power density and long service life under high pressure.

Technical Specifications 

• Model: HMF105-02 2508 (series includes HMF28 / HMF35 / HMF75 / HMF105 / HMF135)
• Displacement: HMF105 105 cm³/rev (series approx. 28.6–135.6 cm³/rev)
• Nominal Pressure: 450 bar
• Peak Pressure: 500 bar
• Maximum Operating Speed: HMF105 3500 rpm (series 3200–4500 rpm)
• Maximum Intermittent Speed: HMF105 3800 rpm
• Output Torque (at Δp=430 bar): approx. 719 Nm
• Control Type: Fixed displacement
• Design: Swash-plate axial piston, suitable for open and closed circuits
• Weight: approx. 33 kg
• Brand / Series: Linde HMF-02 high-pressure fixed displacement piston motor

Key Technical Advantages:

1. High-Pressure Fixed Design & Power Density: Continuous rating of 450 bar and peak of 500 bar combined with compact swash-plate construction deliver high power density for heavy-duty drives.
2. Excellent Low-Speed Performance & High Starting Torque: Optimised start-up and low-speed characteristics ensure smooth operation and strong starting torque for precise control applications.
3. Open/Closed Circuit Compatibility & Optional Features: Directly usable in open or closed circuits. Optional purge valves and high-pressure relief valves enhance system flexibility.
4. Robust Bearings & Extended Service Life: High-load-capacity bearings and precision manufacturing ensure reliable long-term operation under high-pressure, high-speed conditions.
5. True Interchangeability & Compact Installation: Fully compatible with OEM SAE mounting flanges and spline shafts, enabling rapid replacement and minimising downtime.

Application Areas

• Travel and swing drives on construction machinery (excavators, loaders, cranes)
• Agricultural and forestry equipment hydraulic transmissions
• Port and material-handling equipment
• Industrial open/closed circuit hydraulic systems
• Any mobile or stationary application requiring high starting torque and low-speed stability

Expert Maintenance Tips

1. Ensure proper SAE flange alignment during installation. Tighten shaft-end fasteners to specified torque and verify correct rotation and port connections.
2. Use anti-wear hydraulic oil meeting required cleanliness levels; system filtration should be at least 10 μm. Thoroughly bleed air before initial start-up.
3. Regularly check case pressure (max. 2.5 bar) and oil temperature to prevent over-pressure. Ensure free flow if optional purge valves are fitted.
4. During service, inspect pistons, slippers and valve plate for wear; replace complete rotating groups when necessary. Store long-term units in a dry environment and rotate the shaft periodically.