Axial Deep Groove Ball B. SKF 51222

The SKF 51222 axial deep groove ball bearing accommodates unidirectional axial loads and is designed for shafts with a 110 mm bore and a 38 mm overall height.

The 51222 axial deep groove ball bearing is a separable rolling bearing designed for pure axial loads from a single direction. The assembly comprises a shaft ring, a housing ring and the guided ball set. SKF manufactures this model from standard rolling-element bearing steel (100Cr6) to tolerance class P0/PN or ABEC 1. This bearing design cannot accommodate radial forces. The sheet steel cage guides the rolling elements evenly at operating temperatures ranging from –30 to +150 degrees Celsius.

What loads does the 51222 axial deep-groove ball bearing support?

This single-acting bearing transmits only axial forces in a defined direction along the shaft axis. The separate arrangement of the shaft ring, housing ring and ball unit simplifies the installation of the individual components into the machine. Radial loads must be completely ruled out due to the design, as the raceways of the rings are profiled exclusively to accommodate axial forces.

What requirements does the rigid design place on the installation environment?

As the 51222 axial deep-groove ball bearing is not angularly adjustable and is supplied without a shim, the contact surfaces must be flat and perpendicular to the axis of rotation. Even slight misalignments of the shaft axis lead to uneven edge loads on the raceways. Precise alignment of the housing and shaft seats protects the rolling elements from one-sided loading during operation.

The open design requires a suitable lubrication supply for the rolling elements and raceways prior to commissioning. Furthermore, the design must ensure that a minimum axial load is applied during operation to prevent the balls from sliding.