Deep Groove Ball Bearings FAG 6226 -M-C3

The FAG 6226 -M-C3 deep-groove ball bearing, with a 130 mm bore, brass cage and C3 clearance, offers a high level of operational reliability for industrial applications subject to thermal stress.

The single-row deep-groove ball bearing 6226 -M-C3 is an open rolling bearing designed to accommodate radial loads as well as axial loads acting in both directions. Manufactured from standard roller bearing steel (100Cr6), this bearing has a bore of 130 mm, an outer diameter of 230 mm and a width of 40 mm. The combination of a robust brass cage and a slightly increased clearance (C3) makes this design ideal for applications in heavy machinery where operational heating or additional dynamic forces occur.

Under what operating conditions is the 6226 -M-C3 deep groove ball bearing with brass cage required?

The bearing is primarily used in designs where high radial loads, combined with axial guiding forces, act on large shaft diameters. As the design is an open bearing, lubrication is supplied via the surrounding housing system, for example via an oil bath or a continuous grease supply. The solid brass cage is designed to withstand mechanical vibrations, accelerations and alternating loads during continuous operation.

Why are the brass cage and C3 clearance crucial for this bearing?

The designation ‘M’ stands for a solid brass cage, which guides the rolling elements precisely and remains thermally stable. Together with the C3 bearing clearance, the bearing specifically compensates for operational temperature differences between the inner and outer rings. In the case of tight fits on the shaft or in the housing, the slightly increased radial clearance prevents the balls from becoming stressed. From a design perspective, an effective housing seal must be provided at the bearing location to keep dirt particles and moisture out of the open rolling chamber.