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ComponentsSolutionsGearboxes and rope winchesDAT 350 wind

The slewing drive DAT 350 wind is part of the Liebherr series-production for wind turbines. The gearbox size 350 can be designed with a short output shaft (design 1) or long output shaft (design 2) and is suitable for use as yaw and pitch gearbox.

metricimperial

  • Reference output torque, dynamic - 21,000 Nm

  • Output torque Tmax - 49,500 Nm

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Reference output torque, dynamic
21,000 Nm
Output torque Tmax
49,500 Nm
Areas of application
Wind energy
Gear transmission ratios (yaw)
960.0 / 1,004.3 / 1,090.2 / 1,237.5 / 1,443.8 / 11,625
Gear transmission ratios (pitch)
116.4 / 132.1 / 154.2 / 165.6 / 175.0 / 185.7 / 198.0 / 212.5

Variants

TypeDesign 1Design 2
Diameter of centering seat (mm)340268 / 270
External diameter (mm)405450
Pitch circle diameter (mm)375410
Housing diameter (mm)340340
Number of bolts2418
Diameter of bolts (mm)17.517.5
Installation depth (mm)90160
Height of centering seat (mm)10.017.0 / 64.0
Gearbox height (mm)500420
Flange height (mm)2530
Number of teeth (output pinion)1114
Gear module of output pinion1613
Height of output pinion (mm)115135
Weight (three-stage model) (kg)235240
Diameter of output pinion (mm)220225

Components for Wind Turbines

Slewing Drives for Wind Turbines

Yaw systems
Yaw gearboxes, so called wind tracking mechanisms, adjust the nacelle to the particular wind direction. In order to transmit the required high adjustment forces, the use of several slewing drives is recommended.
Pitch systems
Pitch gearboxes control the angles of attack of the rotor blades and adapt them to the variable wind speeds. For highest accuracy at rotor blade positioning, Liebherr offers slewing drives with reduced play upon request.

Slewing bearings

For over 70 years Liebherr has been manufacturing top-quality large diameter slewing bearings. Depending on requirements, various dimensions are available.

Contact

Please contact us – we will answer your questions and put together an individual offer for you. If you need a component as a spare part for your Liebherr machine, please contact your local service partner.

Swivelling drives

Liebherr develops special swivelling drives for applications which are exposed to high dynamic loading during the rotating movement (e.g. excavator).