Four-point Contact Ball Bearing comprises an inner ring and an outer ring. Featuring compact design, light weight and four-point contact ball configuration, this slewing ring is designed with excellent dynamic load capacity to handle axial, radial and tilting moment loads.
Four-point contact ball slewing rings are particularly versatile and are widely used in cranes, lifting equipment and other engineering machinery.
Outer diameter: 602mm~4726mm
Ball diameter: 30mm~75mm
Rated load: 129kN~3410kN
Four-point contact ball bearing is comprised of an outer ring and an inner ring in integral structure or split structure. The two split rings of bearings in split structure are bolted together before delivery. Usually cages or spacers can be found in four-point contact ball bearings. In addition, bearings in full-filled ball structure is used only for large loads, thereby the full-filled ball structure bearings features good loading capacity and larger friction, the latter may result in scratches on the contact balls.
Four-point contact ball bearing details
Range of external diameter: 100 mm to 15000 mm
Ring material: 42CrMo / 50Mn/ C45
Ball/roller material: GCr15
Cage material: steel 20 or ZL102 cast aluminum alloy
Spacer material: nylon 6 / nylon 66
Quenching hardness of raceway: HRC55-62
Tooth type: no gear, internal gear, external gear
Applications
Excavator
Crane
Rotary conveyor
Port machinery
Wind power generation
Amusement facilities
Three various types of four-point contact ball bearing
Four-point Contact Ball, with No Gear
Four-point Contact Ball, with External Gear
Four-point Contact Ball, with Internal Gear
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