Four Point Contact B. FAG QJ332 -N2-MPA

The FAG QJ332 -N2-MPA four-point bearing, with a 160 mm bore, brass cage and retaining grooves, is designed to provide reliable axial guidance in industrial applications.

The QJ332 -N2-MPA four-point contact bearing belongs to the group of radial ball bearings with a special four-point contact design. The design accommodates high axial forces in both directions and requires less axial installation space than double-row angular contact ball bearings. Fitted with a brass cage and manufactured to tolerance class P0/PN (ABEC 1), this open bearing is suitable for demanding applications. The permissible temperature range is from –30 to +200 degrees.

What is the QJ332 -N2-MPA four-point bearing suitable for in practice?

The QJ332 -N2-MPA four-point bearing is primarily used where high axial forces need to be accommodated within a limited axial installation space. Typical applications utilise the bearing as a pure axial bearing in combination with a separate radial bearing. The two retaining grooves in the outer ring, offset by 180 degrees, prevent the outer ring from rotating unintentionally within the housing. Thanks to the split inner ring, the component can be fitted precisely and separately.

What is the function of the retaining grooves and the split inner ring?

The two retaining grooves in the outer ring serve to prevent rotation by means of a positive-fit locking mechanism using suitable locking pins in the bearing housing. The split inner ring allows the ball row to accommodate a greater number of rolling elements, which specifically increases the axial load capacity. The standard radial bearing clearance is designed to ensure balanced operating clearance during standard operation. As this is an open bearing without an integrated seal, the bearing location must be lubricated via the surrounding housing and protected from contamination.