ZYS precision bearing, ball bearings, roller bearings, bearing parts

 Four-point contact ball bearing is a separable bearing, or a set of angular contact ball bearings that can bear bidirectional axial load. The inner and outer ring raceways are peach-shaped sections. When there is no load or pure radial load, the steel ball and the ring appear as four-point contact, which is also the origin of this name. When only the pure axial load acts, the steel ball and the ferrule become two-point contact, which can bear the bidirectional axial load. Four-point contact ball bearings can also Bearing moment load, it has the functions of single row angular contact ball bearing and double row angular contact ball bearing. Four-point contact ball bearings can only ensure normal operation when they form two-point contact. Therefore, it is generally suitable for those occasions where there is two-point contact under pure axial load or synthetic load with large axial load. The four-point contact ball bearing has a high limit speed and is also suitable for those high...

A vertical lift powered by an electric motor, equipped with a box-shaped pod,  elevator bearing  used Crew or transport goods in multi-storey buildings. There is also a step type, the step board is installed in Bring continuous operation, commonly known as automatic elevators. The structure of the elevator includes: Four spaces: Machine room part, shaft and pit part, car part, maintenance floor part; Eight major systems: Traction system, guidance system, car, door system, weight balance system, Electric drive system, electrical control system, safety protection system.