TMT400 Danfoss Orbital Motor 410.9cm³ 350bar High Torque

Product Overview

The Danfoss TMT400 (and TMT250, TMT500 series) is a Danfoss TMT/TMV series high-torque low-speed orbital hydraulic motor (Geroler type) designed for tough applications, featuring pressure capability up to 350 bar, high starting torque, and excellent efficiency. With a displacement of 410.9 cm³/rev, continuous torque up to approximately 1520 Nm, maximum output around 37 kW, and speeds up to 305 rpm, it delivers reliable performance. Our TMT400V 11025856 and companion models including TMT250, TMT400, TMT500, OMT, OMR, OMTW, and TMVW are manufactured to original technical specifications, offering 100% interchangeability (flange, shaft end, ports, and dimensions fully match OEM) and 100% simulated-duty testing. They provide robust operation under heavy loads, low speeds, high pressure, and frequent reversals as cost-effective direct replacements for genuine Danfoss motors.

Technical Specifications

• Model: TMT400V 11025856 (series also available in TMT250, TMT400, TMT500, OMT, OMR, OMTW, TMVW)
• Displacement: 410.9 cm³/rev
• Continuous pressure drop: up to 250 bar
• Intermittent pressure drop: up to 350 bar
• Peak pressure drop: up to 400 bar
• Maximum continuous speed: 305 rpm
• Maximum intermittent speed: approx. 360 rpm
• Maximum continuous torque: approx. 1520 Nm
• Maximum intermittent torque: approx. 2120 Nm
• Maximum continuous output: approx. 37 kW
• Control: Fixed displacement, bidirectional
• Design: Geroler orbital motor with disc valve drive and tapered roller bearing support
• Approx. weight: 25–30 kg (depending on configuration)

Key Technical Advantages

1. Geroler gear set and disc valve design deliver high starting torque, smooth operation across the full speed range, and excellent efficiency even under high pressure and thin oil conditions.
2. High radial and axial bearing capacity with tapered roller bearings supporting the output shaft provides long service life under heavy loads and shock conditions.
3. High-pressure shaft seal design supports elevated return pressure without a drain line, offering a compact structure suitable for both open and closed circuits.
4. Full dimensional and performance interchangeability plus rigorous simulated-duty testing guarantee drop-in replacement of original Danfoss units, minimizing downtime and lifecycle costs.

Application Areas

Ideal for skid-steer loaders, trench compactors, forestry harvester heads, beet harvesters, agricultural equipment, construction machinery, and industrial drives requiring low-speed high-torque performance. Typical functions include propel drives, work functions, and rotary systems needing high starting torque.

Expert Maintenance Tips

• Verify exact match of mounting flange, shaft end (spline), and port orientation before installation; observe radial and axial load limits.
• Maintain hydraulic fluid cleanliness to recommended standards using specified viscosity oils; regularly check shaft seals and case leakage.
• Monitor speed, torque, and temperature during commissioning; avoid prolonged over-pressure or over-speed operation.
• Use matching seal kits during service; record operating parameters to detect early efficiency decline.