Three Row A Roller Slewing Bearing

This Three Row a Roller Slewing Bearing is comprised of an Inner Ring, Outer Ring, three rows of rollers and seals. Three independent rows of rollers efficiently carry axial, radial and moment loads. With the most capacity per unit size this design also offers the highest stiffness and a low torque. The rectangular design allows for Internal, External, or no-gear designs.
Typical Capacity Range:
LoadEnglishMetric
Axial (Thrust)100,000 a 17,300,000 lb444,822a 76,954,230 N
Radial10,000 a 5,000,000 lb 44,482a 22,241,110 N
Moment20,000 a 63,000,000 ft-lb27,116 a 85,416,660 Nm

Typical Size Range mm (inch)
O.D.I.D.Width
634(24.96)336 ( 13.23)148 (5.83)
4782 (188.3)4218 (166)270 (10.63)

XZXD Slewing Ring Bearings:
Turntable Bearings
Single row a four point contact ball
Single row a crossed roller
Double row a angular contact ball
Three row a roller
Ball/Roller combined

Typical Applications:
Off-shore equipment, stackers/reclaimers, dock cranes, tunnel-boring machines, shipboard cranes, heavy mill equipment, mining equipment, excavators, radar and satellite antennas.