Deep Groove Ball Bearings SKF 6318 /C3

The SKF 6318/C3 single-row deep groove ball bearing offers high radial load-carrying capacity with a 90 mm bore, a 190 mm outer diameter and C3 clearance.

The 6318/C3 deep groove ball bearing is an open, single-row radial rolling bearing from SKF designed for demanding industrial applications. It primarily accommodates radial loads, guides the shaft during operation and, thanks to its deep raceways, is also suitable for moderate axial forces in both directions. Manufactured from standard 100Cr6 rolling-bearing steel, the rings and rolling elements offer high dimensional stability. The integrated sheet steel cage guides the balls evenly and keeps friction to a minimum during operation.

In which applications is the open deep-groove ball bearing 6318 /C3 used?

This open radial deep-groove ball bearing is primarily used in industrial bearing installations subject to high loads. As the bearing is open, lubricating oil or grease from the surrounding system can reach the raceways unhindered. This design is suitable for applications where the surrounding housing is fitted with an external seal. Systems with continuous oil lubrication thus allow unhindered access of lubricant.

What are the advantages of the increased C3 bearing clearance in the design?

The version with C3 bearing clearance has greater radial clearance than the standard version. This compensates for thermal expansion caused by heating during operation, as well as for tight fits on the shaft, thereby preventing stress in the bearing. With tolerance class P0 (ABEC 1), the component meets the standardised requirements for dimensional and concentricity accuracy. This provides a thermally stable rolling bearing suitable for operating environments ranging from -20 to +150 degrees.