Deep Groove Ball Bearings FAG 6318 -C3

The FAG 6318-C3 deep groove ball bearing, measuring 90 × 190 × 43 mm, offers increased clearance (C3) for industrial applications at temperatures ranging from -20 to +150 degrees.

The single-row deep-groove ball bearing 6318 -C3 from FAG accommodates radial loads as well as axial forces in both directions. Manufactured from standard roller bearing steel (100Cr6) and guided by a dimensionally stable sheet steel cage, the component operates within a temperature range of -20 to +150 degrees. Thanks to its tolerance class P0/PN (ABEC 1), the rolling bearing is suitable for a wide range of industrial applications. As an open design without sealing washers, the construction allows lubricant to be supplied directly via the surrounding system.

What are the applications for the open deep-groove ball bearing 6318-C3?

Typical applications include general mechanical engineering, industrial gearboxes and larger electric motors. As the design features no seals, the bearing is particularly suitable for housings with external sealing and central oil or grease lubrication. The open design allows for free lubricant flow and minimises internal frictional resistance. Furthermore, the smooth outer ring without a flange facilitates installation in precision-machined housing bores.

What does the C3 clearance rating mean for the 6318 deep-groove ball bearing?

The designation C3 indicates a slightly increased radial clearance compared with the standard version. This additional clearance between the rolling elements and raceways helps to prevent the bearing from becoming stressed when it heats up or in the case of tight fits. If temperature differences occur between the inner and outer rings during operation, the C3 bearing clearance compensates for thermal expansion. An external seal on the bearing housing reliably protects the open bearing from contamination.