Deep Groove Ball Bearings FAG 6220 -C3

The 6220-C3 deep-groove ball bearing from FAG Wälzlager, with a 100 mm bore and C3 clearance, offers reliable running characteristics under thermal loads.

This single-row deep groove ball bearing 6220-C3 from FAG Rolling Bearings is designed as an open bearing without an integrated seal. It primarily accommodates radial forces as well as axial loads in both directions. Manufactured from standard rolling-element bearing steel 100Cr6 and fitted with a sheet steel cage, this design is suitable for operating temperatures ranging from –20 to +150 degrees Celsius. The outer ring is cylindrical in design and has no flange or groove. It is manufactured to tolerance class P0/PN (ABEC 1).

What is the 6220-C3 deep groove ball bearing suitable for in industrial applications?

Maintenance engineers and designers typically use this size for shaft mountings in mechanical and plant engineering with a shaft diameter of 100 mm. As no sealing washers are fitted, the bearing runs with low friction and generates minimal frictional heat. It is primarily installed in enclosed housings where external oil or grease lubrication is provided. As the lubricant can access the bearing freely, it can be integrated into existing lubrication circuits, provided the design is protected against contamination.

What does the C3 radial clearance mean for this design?

The suffix C3 indicates a slightly increased radial clearance compared with the standard version. This increased radial clearance helps to compensate for thermal expansion caused by operational heating. It also compensates for the radial constriction of the inner ring that occurs with tight press fits on the shaft. In this way, the low-friction running of the rolling elements is maintained even when there are temperature differences between the bearing rings.