Four Point Contact Ball Slewing Bearing

1. Type: External gear, Internal gear, No gear
2. Size: For No Gear Type
Inner Diameter: 320-4272mm ,Outer Diameter: 550-4726mm
Weight: 85.6-3100kg
For Internal Gears Type
Inner Diameter: 398-4272mm ,Outer Diameter: 602-4726mm
Weight: 80-3100kg
For External gear type
Inner Diameter: 398-4272mm ,Outer Diameter: 602-4726mm
Weight: 80-3100kg
3. Feature: Cross cylindrical roller slewing bearings main structural characteristics: 1:1 cross arrangement of cylindrical rollers.The bearing with this structure features high stability, high precision, and high impact resistance. For example, the cannon’s rotary base uses this kind of bearing.
4. Application: Slewing bearings are widely used in cranes, excavation machines, construction machinery, port cargo handling machinery, large turnplates of high precision radars and missile launchers, etc.
5. Material:50Mn/42CrMo/S48C/42CrMo4/16Mn

1. Type: External gear, Internal gear, No gear 2. Size: For No Gear Type Inner Diameter: 260-4272mm ,Outer Diameter: 480-4726mm Weight: 55-4000kg For Internal Gear Type Inner Diameter: 458-4272mm ,Outer Diameter:662-4726mm Weight: 94-4000kg For External Gear Type Inner Diameter: 470-4272mm ,Outer Diameter: 694-4726mm Weight: 93.1-4000kg 3. Feature: Four-point contact ball slewing bearings contact angle is usually 35°. If there is only a radial load, each steel ball contacts the raceway at four points. If there is only a unidirectional axial load, each steel ball contacts the raceway at two points. It can bear axial loads in two directions as well as a certain eccentric load, i.e. torque. Such kind of bearing has features and properties of both single-row and double-row angular contact ball bearings. If it is used in a high-speed scenario, two-point contact must be ensured for its normal working. 4. Material:50Mn/42CrMo/S48C/42CrMo4/16Mn