Four Point Contact B. FAG QJ213 -MPA

The FAG QJ213-MPA four-point bearing, with dimensions of 65 × 120 × 23 mm, accommodates high axial forces on both sides whilst maintaining a narrow overall width.

The QJ213-MPA four-point contact bearing is a special radial ball bearing designed for shaft diameters of 65 mm and an outer diameter of 120 mm. As a single-row bearing with four-point contact, it guides shafts axially in both directions, either without play or with defined guidance. FAG’s manufacturing process complies with the standard tolerance class P0/PN (ABEC 1). As this design is an open bearing, it can be integrated directly into existing lubrication circuits.

What is the QJ213-MPA four-point bearing suitable for?

This bearing is primarily used where high axial loads from varying directions occur, but where the installation space in the axial direction remains limited. In gearbox construction and general mechanical engineering, a four-point contact bearing often replaces double-row angular contact ball bearings. It is frequently used purely as a guide bearing in combination with a separate radial bearing that absorbs the transverse forces. Furthermore, the component is suitable for applications with operating temperatures ranging from -30 °C to +150 °C.

What are the advantages of a split inner ring and a brass cage?

The split inner ring allows a large number of balls to be accommodated within the bearing, which increases the axial load capacity. Furthermore, this design enables separate assembly: the outer ring, together with the ball race, and the two inner ring halves can be fitted onto the shaft and housing in succession. The solid brass cage guides the rolling elements with minimal vibration and is also suitable for higher thermal loads. In this version, which has no groove in the outer ring, the bearing is secured by its precise fit within the bearing housing.