double four point angular contact ball bearing 7205

double four point angular contact ball bearing 725

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.
The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from one raceway to another, and a line perpendicular to the bearing axis.

Double row angular contact ball bearings can withstand larger radial load and axial joint load and torque load, limit the axial displacement of the two aspects. Mainly used for limiting the axial displacement of the shaft and the shell.
Double row angular contact ball bearing inner and outer ring of the tilt between the limited, allowing the tilt angle depends on the internal clearance of the bearing, bearing size, internal design and role in bearing the force and torque, and the maximum allowable inclination angle should ensure that the bearing will not produce high additional stress.