Four point contact ball bearing is a kind of separated bearing, bearing can bear two-way axial load angular contact ball bearing. Its inner and outer ring raceway is peach type cross section, when no load or pure radial load action, the steel ball and the collar presents as four-point contact.
When there is only pure axial load, the steel ball and the collar become two-point contact, can withstand two-way axial load. four point contact ball bearings can also withstand moment load, both single-row angular contact ball bearings and double-row angular contact ball bearings. four point contact ball bearings can only form two-point contact to ensure normal operation. So it is generally suitable for those pure axial load or axial load with large synthetic load in two-point contact, four point contact ball bearing limit speed is high, also suitable for those high-speed operation.
1.Four point contact ball bearing is separable type structure, single bearing can replace the front combination or back combination of angular contact ball bearing.
2.Can bear radial load, two-way axial load, can limit the axial displacement in two directions, but than the current specifications of the double-row angular contact ball ball bearings occupy less axial space.
3.Four point contact ball bearing compared with other ball bearings, when the radial clearance is the same, the axial clearance is smaller, the limit speed is higher.
5.Four point contact ball bearing is suitable for bearing pure axial load or axial load mainly axial, radial combined load. Due to the double half inner ring (or outer ring), the number of balls installed increased, with a larger bearing capacity.
6.In normal working conditions, the bearing with any direction of the axial load, can form a contact angle, the steel ball and the inner and outer raceway each contact in a point, to avoid contact area of large sliding friction. Therefore, the bearing is not suitable for radial force-based and load.