OMT400 151B3004 Danfoss OMT OMV High Pressure Orbital Motor

Product Overview

The OMT400 (151B3004), OMT160, OMT200, OMT250, OMT400, OMT500, and OMV/OMVW series are Danfoss (formerly Sauer-Danfoss) low-speed high-torque (LSHT) orbital hydraulic motors. Featuring a gearwheel set with hydraulically balanced disc valve, these motors deliver high starting torque, high volumetric efficiency, and excellent radial/axial load capacity. Fully interchangeable with genuine Danfoss units and subjected to 100% simulated operating condition testing, they are designed for continuous duty under high pressure, frequent reversals, and harsh conditions. Precision manufacturing and tapered roller bearings ensure long-term reliability in demanding mobile and industrial applications.

Technical Specifications 

• Model: OMT160
  • Displacement: 161.1 cm³/rev
  • Continuous pressure drop: 200 bar
  • Intermittent/peak pressure drop: 240 bar (peak 280 bar)
  • Maximum continuous speed: 625 rpm
  • Maximum intermittent speed: 780 rpm
  • Maximum continuous torque: 470 Nm
  • Maximum intermittent torque: 560 Nm
  • Control type: Fixed-displacement gerotor, bidirectional
  • Approximate weight: 20 kg
• Model: OMT200
  • Displacement: 201.4 cm³/rev
  • Continuous pressure drop: 200 bar
  • Intermittent/peak pressure drop: 240 bar (peak 280 bar)
  • Maximum continuous speed: 625 rpm
  • Maximum intermittent speed: 750 rpm
  • Maximum continuous torque: 590 Nm
  • Maximum intermittent torque: 710 Nm
  • Control type: Fixed-displacement gerotor
  • Approximate weight: 20.5 kg
• Model: OMT250
  • Displacement: 251.8 cm³/rev
  • Continuous pressure drop: 200 bar
  • Intermittent/peak pressure drop: 240 bar (peak 280 bar)
  • Maximum continuous speed: 500 rpm
  • Maximum intermittent speed: 600 rpm
  • Maximum continuous torque: 730 Nm
  • Maximum intermittent torque: 880 Nm
  • Control type: Fixed-displacement gerotor
  • Approximate weight: 21 kg
• Model: OMT400 / 151B3004
  • Displacement: 410.9 cm³/rev
  • Continuous pressure drop: 180 bar
  • Intermittent/peak pressure drop: 210 bar (peak 240 bar)
  • Maximum continuous speed: 305 rpm
  • Maximum intermittent speed: 365 rpm
  • Maximum continuous torque: 1080 Nm
  • Maximum intermittent torque: 1260 Nm
  • Maximum continuous oil flow: 125 L/min
  • Control type: Fixed-displacement gerotor, 40 mm cylindrical shaft, G3/4 ports
  • Approximate weight: 23 kg
• Model: OMT500
  • Displacement: 523.6 cm³/rev
  • Continuous pressure drop: 160 bar
  • Intermittent/peak pressure drop: 180 bar (peak 210 bar)
  • Maximum continuous speed: 240 rpm
  • Maximum intermittent speed: 285 rpm
  • Maximum continuous torque: 1220 Nm
  • Maximum intermittent torque: 1370 Nm
  • Control type: Fixed-displacement gerotor
  • Approximate weight: 24 kg
• OMV / OMVW Series (representative)
  • Displacement range: approx. 314.5–801.8 cm³/rev
  • Continuous pressure drop: up to 200 bar (size-dependent)
  • Maximum continuous torque: up to approx. 1880 Nm
  • Maximum continuous power: up to approx. 53.5 kW
  • Control type: Fixed-displacement gerotor, wheel-mount versions available

(Note: Data from official Danfoss technical literature. Intermittent values limited to max. 10% of every minute; peak values to max. 1%. Exact shaft, flange, and port configurations depend on the full model code.)

Key Technical Advantages

• Hydraulically balanced disc valve and precision gearwheel set deliver high volumetric efficiency and smooth low-speed operation, even under high pressure and thin oil conditions.
• Tapered roller bearings provide superior radial and axial load capacity, suitable for both static and dynamic side loads.
• High-pressure shaft seal design supports high return pressure without a mandatory drain line, simplifying system plumbing.
• Full drop-in interchangeability with genuine Danfoss motors plus 100% simulated duty-cycle testing ensure reliable performance in high-pressure, frequent-reversal, and harsh environments while reducing maintenance costs.

Application Areas

Vehicle propulsion and drive axles, winches and hoists, augers and trenchers, forestry and agricultural machinery, material handling and conveyor systems, snow removal equipment, construction attachments, marine equipment, and a wide range of medium- to heavy-duty mobile and stationary hydraulic systems.

Expert Maintenance Tips

Verify system cleanliness and oil viscosity (premium mineral oil recommended) before installation. Ramp pressure gradually on start-up to avoid dry running. Periodically inspect shaft seals and monitor bearing side loads. When a drain line is used, ensure return pressure remains within limits. Prefer genuine or verified interchangeable units for replacement to ensure exact port and flange match. Strictly observe intermittent and peak duty time limits. Maintain proper oil cleanliness to maximize service life.