Product segments

DAT 250 wind

Name: DAT 250 wind Slewing drive
Brand: Liebherr

Slewing drive

The slewing drive DAT 250 wind is part of the Liebherr series-production for wind turbines. The gearbox size 250 can be designed with a short output shaft (design 1) or long output shaft (design 2) and is suitable for use as a pitch gearbox.

metric

imperial

Reference output torque, dynamic - 8,500 Nm
8,500 Nm
Output torque Tmax - 21,900 Nm
21,900 Nm

Reference output torque, dynamic	8,500 Nm
Output torque Tmax	21,900 Nm
Areas of application	Wind energy
Gear transmission ratios (pitch)	105.5 / 120.9 / 127.4 / 132.6 / 150.3 / 164.9 / 188.7 / 194.8

Variants

Type	Design 1	Design 2
Diameter of centering seat (mm)	220	190 / 210
External diameter (mm)	280	270
Pitch circle diameter (mm)	250	245
Number of bolts	12	12
Diameter of bolts (mm)	17.5	14.0
Installation depth (mm)	68	185
Height of centering seat (mm)	20.0	15.0 / 45.0
Gearbox height (mm)	400	325
Flange height (mm)	25	113
Number of teeth (output pinion)	15	14
Gear module of output pinion	12	10
Height of output pinion (mm)	110	105
Weight (three-stage model) (kg)	115	110
Diameter of output pinion (mm)	215	170

Components for Wind Turbines

Slewing Drives for Wind Turbines

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).