Four Point Contact B. FAG QJ208 -MPA

The FAG QJ208-MPA four-point bearing accommodates high axial forces in both directions whilst maintaining compact dimensions of 40 × 80 × 18 mm.

The QJ208-MPA four-point bearing belongs to the radial ball bearing group and is primarily designed to accommodate axial forces from two directions within a limited axial installation space. FAG Rolling Bearings manufactures this version with a split inner ring and a solid brass cage. As an open rolling bearing without an integrated seal, the component is designed for use with external lubrication systems and operates within a temperature range of -30 to +150 degrees.

What is the QJ208-MPA four-point bearing suitable for in operation?

The bearing is primarily used where varying axial loads occur and the axial installation space is insufficient for double-row angular contact ball bearings. The model is often used purely as an axial bearing in combination with a separate radial bearing. As the outer ring has no retaining grooves, it rests evenly against the housing, contributing to stable guidance.

What advantages does the split inner ring offer during installation?

The two-piece design of the inner ring allows a greater number of rolling elements to be fitted, which increases the axial load capacity. Furthermore, the bearing is not self-retaining. You can fit the outer ring, together with the brass cage and ball set, separately from the two inner ring halves. When fitting, ensure compliance with tolerance class P0/PN (ABEC 1) and the standard radial bearing clearance.