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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.

Product portfolio Large diameter bearings

<h2>Slewing bearings</h2>

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

<h2>Contact</h2>

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.

<h2>Swivelling drives</h2>

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

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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

Type	Design 1	Design 2
Diameter of centering seat (mm)	340	268 / 270
External diameter (mm)	405	450
Pitch circle diameter (mm)	375	410
Housing diameter (mm)	340	340
Number of bolts	24	18
Diameter of bolts (mm)	17.5	17.5
Installation depth (mm)	90	160
Height of centering seat (mm)	10.0	17.0 / 64.0
Gearbox height (mm)	500	420
Flange height (mm)	25	30
Number of teeth (output pinion)	11	14
Gear module of output pinion	16	13
Height of output pinion (mm)	115	135
Weight (three-stage model) (kg)	235	240
Diameter of output pinion (mm)	220	225