
Rugged drive solutions
Rugged drive solutions
Inline gear motors
Inline gear motors
Rugged drive solutions to meet your needs
Our inline gear motors are engineered for rugged application and enable high radial forces to be accomodated on the output shaft in a wide torque range. Other features include:
- torque range (90 to 550 Nm)
- excellent efficiency
- coaxial design
- 5 gearbox sizes
- 3 housing designs
Your Contact

Demag Cranes and Components Corp.
Demag Cranes and Components Corp.
6675 Parkland Blvd., Suite 200
Cleveland, Ohio 44139
United States
Product information
The benefits at a glance
Maximum flexibility
- 5 gearboxes for torques from 90 to 550 Nm
- Direct input or coupling connection
- 3 housing designs
Drive output to meet your needs
- Coaxial design
- Solid shaft with key
Convenient online configuration with Demag Drive Designer
- View technical data
- Design support by means of 2D and 3D geometries in all standard file formats
- Provision of electrical circuit diagrams
- Delivery time indicator
- Transfer selected configuration to Demag Shop
Technical data
Type D helical geared motors
Transmission ratio (i) | |||
Gearbox size | Output torque lb-ft [Nm] | 2-stage | 3-stage |
D11 | 66 [90] | 2.88 - 66.5 | - |
D21 | 96 [130] | 2.88 - 66.5 | - |
D31 | 148 [200] | 3.23 - 61.6 | 66.4 - 253 |
D41 | 243 [330] | 3.23 - 58.6 | 49.5 - 240 |
D50 | 406 [550] | 2.78 - 61.4 | 71.9 - 251 |
D11 - D41: aluminium housing
D50: grey cast iron housing
Features and accessories
Gear motors
Options | A offset gearboxes | W right angle gearboxes | D incline gearboxes |
Torque brackets | ■ | ■ | |
Foot rails/plates | ■ | ■ | |
Mounting flange | ■ | ■ | ■ 1) |
Extended temperature range | ■ | ■ | ■ |
Special paint finish | ■ | ■ | ■ |
Special lubricants | ■ | ■ | ■ |
Gearbox venting 2) | ■ | ■ | ■ |
Double gearboxes 3) | ■ | ■ | ■ |
1) For sizes D11 - D41
2) Standard for size 50
3) For particularly low speeds