Deep Groove Ball Bearings FAG 6212 -C3

The FAG 6212-C3 single-row deep-groove ball bearing, with dimensions of 60 × 110 × 22 mm and an increased clearance of C3, offers a solution for applications subject to thermal stress.

The 6212-C3 deep groove ball bearing is an open, single-row radial ball bearing manufactured to standard tolerance P0/PN. The bearing, made from standard rolling-element steel 100Cr6, primarily accommodates radial and axial forces in both directions. The open design, without integrated sealing washers, allows for the direct supply of lubricating oil or grease from the surrounding housing. A sturdy sheet steel cage guides the rolling elements evenly into the deep raceways of the inner and outer rings.

What is the 6212-C3 deep-groove ball bearing suitable for in operation?

This rolling bearing is suitable for bearing arrangements where shafts with a diameter of 60 mm are guided and where increased heat generation is to be expected during operation. Thanks to the increased bearing clearance (C3), the radial operating clearance is maintained even if the inner and outer rings heat up unevenly. Typical applications can be found in general mechanical engineering and gearbox construction, provided that the surrounding housing design ensures external sealing against dirt and moisture.

Why is the increased bearing clearance C3 important for this design?

The designation C3 indicates a radial clearance that exceeds the normal standard value. This is intended to prevent the rolling elements from becoming jammed between the raceways should tight fits on the shaft and housing cause the bearing rings to expand or contract. This bearing clearance also compensates structurally for temperature differences in the range from -20 to +150 degrees. During design, care must be taken to ensure that the open bearing is fitted in such a way as to be protected from contamination and is regularly lubricated with a suitable lubricant.