Danfoss OMM Series Gerotor Motor
Small-frame orbital power for tight installations.
The Danfoss OMM is a compact gerotor orbital motor built for smooth, reliable performance where space is tight. Spanning displacements from 8 to 50 cc with continuous flows up to 20 L/min, it delivers constant operating torque and high starting torque across its full speed range — a dependable choice for lawn and turf gear, materials handling, small machinery and special-purpose drives.
A high-pressure shaft seal handles high return pressure without a drain line, keeping circuits simple. Output reaches 3.2 kW with pressure drops up to 140 bar, all in a robust, hard-wearing package.
Key features
- Compact displacement range 8–50 cc
- Continuous flow up to 20 L/min, output up to 3.2 kW (4.3 hp)
- Maximum pressure drop up to 140 bar
- High starting torque and constant torque across the speed range
- High-pressure shaft seal — high return pressure without a drain line
- High radial and axial bearing capacity
- Open- and closed-loop ready, suits a wide range of hydraulic fluids
Stocked and supported locally — talk to our team for the right OMM configuration.
| Base Model | cm³/rev | Max. speed @ Max. intermittent flow (rev/min) | Max Pressure (bar) | Max Cont Torque (Nm) | Max Cont Oil Flow (l/min) | Power (KW) | Weight (Kg) |
| OML 8 | 8 | 2500 | 140 | 7 | 16 | 1.1 | 1 |
| OML 12.5 | 12.5 | 1600 | 140 | 11 | 16 | 1.1 | 1 |
| OML 20 | 20 | 1000 | 140 | 18 | 16 | 1.1 | 1.1 |
| OML 32 | 32 | 625 | 140 | 29 | 16 | 1.1 | 1.2 |
| OMM 8 | 8.2 | 2450 | 225 | 11 | 16 | 1.8 | 1.9 |
| OMM 12.5 | 12.5 | 1940 | 225 | 16 | 20 | 2.4 | 2 |
| OMM 20 | 19.9 | 1250 | 225 | 25 | 20 | 2.4 | 2.1 |
| OMM 32 | 31.6 | 800 | 225 | 40 | 20 | 2.4 | 2.2 |
| OMM 40 | 39.8 | 630 | 225 | 45 | 20 | 2.2 | 2.3 |
| OMM 50 | 50 | 500 | 225 | 46 | 20 | 1.8 | 2.4 |
