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The slewing drive DAT 450 wind is part of the Liebherr series-production for wind turbines. The gearbox size 450 can be designed with a short output shaft (design 1) or long output shaft (design 2) and is suitable for use as a yaw 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	63,800 Nm
Output torque Tmax	121,700 Nm
Areas of application	Wind energy
Gear transmission ratios (yaw)	712.5 / 1,140 / 1,260 / 1,628.9 / 1,954.2 / 2,143.8

Type	Design 1	Design 2
Diameter of centering seat (mm)	395	360 / 440
External diameter (mm)	483	540
Pitch circle diameter (mm)	435	500
Housing diameter (mm)	440	440
Number of bolts	24	30
Diameter of bolts (mm)	26.0	22.0
Installation depth (mm)	115	337
Height of centering seat (mm)	32.5	10.0 / 70.0
Gearbox height (mm)	620	465
Flange height (mm)	50	30
Number of teeth (output pinion)	13	12
Gear module of output pinion	22	22
Height of output pinion (mm)	165	210
Weight (three-stage model) (kg)	630	515
Diameter of output pinion (mm)	350	330