Axial Deep Groove Ball B. FAG 51211

The FAG 51211 axial deep-groove ball bearing, with dimensions of 55x90x25 mm, supports single-sided axial forces in mechanical engineering.

The 51211 axial deep-groove ball bearing is a separable rolling bearing comprising a shaft ring, a housing ring and a guided set of balls. FAG manufactures this bearing from standard roller bearing steel (100Cr6), combined with a dimensionally stable sheet steel cage. The design accommodates axial loads only and guides shafts with a diameter of 55 mm axially in one direction. This design cannot accommodate radial forces. It is used wherever pure thrust forces in the longitudinal direction of the shaft need to be controlled.

What is the 51211 axial deep groove ball bearing suitable for?

Design engineers select the 51211 axial deep groove ball bearing primarily for bearing arrangements where high axial compressive forces act from a single direction. Thanks to its design to tolerance class P0/PN (corresponding to ABEC 1), the component is suitable for standard requirements in general mechanical engineering. The permissible temperature range is from –30 to +150 degrees. As the bearing has a separable design, the shaft and housing washers can be fitted independently of one another, which facilitates maintenance work and inspections on assemblies.

Why is alignment crucial for the 51211 axial deep-groove ball bearing?

This rolling bearing is not angularly adjustable and does not include a separate shim. Both the shaft ring and the housing ring have flat contact surfaces. The mating surfaces on the housing and shaft must therefore be manufactured to be plane-parallel and at right angles to the axis of rotation. Misalignment or skewing leads to uneven edge loads on the rolling elements, which accelerates wear. Suitable lubrication is also required for operation, as the bearing is designed as an open type without integrated mechanical seals.