Slew Drive Motor

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Slewing drive bearings are usually found in application such as: wind turbines, heavy load transporters, solar trackers, harbor cranes, hydraulic equipment, crane steering mechanisms, automation systems, heavy load manipulators, yaw and pitch control tables.

The slewing drive is a gearbox that can safely hold radial and axial loads , as well as transmit a  torque for rotating. The rotation can be in a single axis , or in multiple axes together. Slewing drives are made by manufacturing gearing,bearings,  seals, housing, motor and other auxiliary components and assembling them into a finished gearbox.

Slewing drives function with standard worm technology, in which the worm on the horizontal shaft acts as the driver for the gear. The rotation of the horizontal screw turns a gear about an axis perpendicular to the screw axis. This combination reduces the speed of the driven member and also multiplies its torque; increasing it proportionally as the speed decreases.The speed ratio of shafts depends upon the relation of the number of threads on the worm to the number of teeth in the worm wheel or gear .

As technology has improved, more slewing drives are using hourglass worm technology, in which the worm is shaped to engage more teeth in the gear. This increased tooth engagement results in greater strength, efficiency and durability.

Single-Row Four Point Angular Contact Slewing Ball Bearing External Gear 9e-1b32-3031-1399

0883450321297 2
Bearing 17.706

Excavator Kato HD250se Swing Circle, Slewing Ring, Slewing Bearing


Swing Circle, Slewing Ring, Slewing Bearing for Excavator Liebherr 926

Inch Assembly; Standard P
90110 Bearing

Excavator Komatsu PC200-2/220-2 Slewing Ring, Swing Circle, Slewing Bearing

0.0 NSK
0747023047376 30.5

Excavator Hitachi Ex225u Slewing Ring, Slewing Bearing, Swing Circle

Bearing B04120
Needle Bearing 30MM Roller Diameter

Excavator Komatsu PC220-7 Slewing Ring, Swing Circle, Slewing Bearing

Bearings 8865590618057
0 0.0

Four-Point Contact Slewing Bearing, External Gear K11.20.0845.000

0029176716317 B04270

Excavator Carterpillar Cat374D Swing Circle, Slewing Bearing, Slewing Ring

Bearings N/A

Excavator Hitachi Ex200 Slewing Ring, Swing Circle, Slewing Bearing

0.0 Double Row | Extra H
254 Yes

Slewing Bearing Ring with External Gear 231.21.0675.013

Roller Bearings 920
128 mm 237.000 mm

Slewing Bearing for Truck Crane Dongyang Ss1926

6.2 Inch | 157 Milli 1002-07818

Slewing Bearing for Material Stacker Reclaimer 1797/3230

0.0 B00234