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The slewing drive DAT 300 wind is part of the Liebherr series-production for wind turbines. The gearbox size 300 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	15,900 Nm
Output torque Tmax	32,700 Nm
Areas of application	Wind energy
Gear transmission ratios (yaw)	975.0 / 1,140 / 1,230 / 1,330 / 1,422.7 / 1,537.8
Gear transmission ratios (pitch)	121.1 / 137.1 / 138.8 / 163.6 / 181.0 / 183.8 / 187.2 / 208.0

Type	Design 1	Design 2
Diameter of centering seat (mm)	310	250 / 290
External diameter (mm)	415	363
Pitch circle diameter (mm)	380	325
Housing diameter (mm)	300	290
Number of bolts	12	18
Diameter of bolts (mm)	20.0	17.5
Installation depth (mm)	130	233
Height of centering seat (mm)	25.0	15.0 / 72.5
Gearbox height (mm)	375	275
Flange height (mm)	30	49
Number of teeth (output pinion)	16	13
Gear module of output pinion	14	12
Height of output pinion (mm)	130	110
Weight (three-stage model) (kg)	195	170
Diameter of output pinion (mm)	260	190