Deep Groove Ball Bearings FAG 6318 -2Z

The FAG 6318 -2Z deep-groove ball bearing, with main dimensions of 90 × 190 × 43 mm and cover plates on both sides, offers robust protection against contamination.

The 6318 -2Z deep-groove ball bearing belongs to the group of single-row radial rolling bearings and primarily accommodates radial forces as well as axial loads in both directions. Manufactured from standard roller bearing steel 100Cr6, this FAG roller bearing design features a standard radial clearance and tolerance class P0/PN (corresponding to ABEC 1). A dimensionally stable sheet steel cage guides the rolling elements during operation. The components are designed for a temperature range of -30 to +120 degrees.

What is the 6318-2Z deep groove ball bearing suitable for?

This size is primarily used in machine designs with a shaft diameter of 90 mm, where high load-carrying capacities and the ability to withstand combined radial and axial forces are required. Thanks to the grooved geometry without a groove or flange on the outer ring, the bearing transmits rotational movement at medium to high speeds. The cylindrical outer contour allows for flush mounting in the bearing housing and ensures even load distribution across the entire raceway.

What features do the cover plates of the -2Z variant offer?

The suffix -2Z denotes a metal split seal on both sides. These sheet metal cover plates protect the bearing interior from coarse dirt particles and foreign matter without rubbing against the inner ring. Compared to contact seals, this keeps the frictional torque low, thereby minimising heat build-up at high circumferential speeds. Installation is recommended in dry to moderately dusty operating environments where smooth running and protection against particles are required.