Deep Groove Ball Bearings FAG 6308 -MA-C3

The FAG 6308 -MA-C3 single-row deep-groove ball bearing, measuring 40x90x23 mm, features a solid brass cage with external guidance and a slightly increased C3 clearance.

The FAG 6308 -MA-C3 deep groove ball bearing is an open, single-row rolling bearing made from standard bearing steel (100Cr6). It primarily accommodates radial loads and can also guide the shaft under axial forces in both directions. The design, which has no flange or ring groove on the outer ring, complies with tolerance class P0/PN or ABEC 1. The open design allows for direct lubrication via the surrounding unit.

For which operating conditions is the 6308 -MA-C3 deep groove ball bearing suitable?

This radial ball bearing is suitable for rotating shafts and bearing locations where significant operating heat or tight fits occur. With a specified temperature range of –30 to +120 degrees, the bearing is designed for a wide variety of industrial environments. As no integrated sealing washers are fitted, it is typically used in enclosed housings with an external lubrication circuit, in which oil or housing grease circulates freely around the rolling elements.

What are the distinctive features of the brass cage and C3 bearing clearance in the 6308 -MA-C3?

The -MA designation refers to a solid brass cage that is guided on the outer ring. This design ensures the balls remain dimensionally stable and produce minimal vibration, even under high acceleration or fluctuating speeds. In addition, the slightly increased radial clearance (C3) compensates for thermal expansion of the shaft and inner ring during operation. In the case of tight fits or temperature differences between the inner and outer rings, the increased radial clearance prevents the rolling elements from becoming jammed.