Double row angular contact ball bearing have raceways in the inner and outer rings that are displaced with respect to each other in the direction of the bearing axis. This means that they 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 with increasing contact angle. The contact angle a 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 load is transmitted from one raceway to another, and a line perpendicular to the bearing axis.
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Double row angular contact ball bearings with a larger outer diameter have filling slots in one direction and have a pressed steel or machined brass cage. Bearings with E design have high load carrying capacity. They also have filling slots on one side and that allows incorporating large number of balls.
They are also available with shields (non-rubbing type) and seals (low friction and rubbing type) on both sides. They are filled with lithium based grease that inhibits rust and can operate from temperatures -30° C to 110° C.
