Deep Groove Ball Bearings FAG 6220 -Z-C3

The FAG 6220 -Z-C3 deep-groove ball bearing, with a 100 mm bore, sheet metal cover and C3 clearance, offers stable operation under thermal stress.

The 6220 -Z-C3 deep-groove ball bearing is a single-row radial ball bearing made from standard rolling-element steel (100Cr6) with a cylindrical bore. The design accommodates high radial loads as well as moderate axial forces in both directions. Thanks to the sheet steel cage and the outer ring without a flange or groove, this rolling bearing fits precisely into cylindrical housing bores. The combination of a single-sided sheet metal cover and tolerance class P0/PN ensures low-vibration operation in industrial drives.

What is the 6220 -Z-C3 deep groove ball bearing suitable for in operation?

Typical applications for this size include rotating drive shafts and bearing locations in mechanical engineering where combined radial and axial forces occur. Design engineers prefer to use this bearing at mounting points where one side needs to remain protected from contamination, whilst the open opposite side is supplied with lubricant via the interior of the housing. Thanks to its dimensions of 100 mm internal diameter and 180 mm external diameter, this design performs well in applications involving continuous rotational movement.

What do the ‘Z’ cover plate and ‘C3’ clearance mean for installation?

The suffixes define specific properties for demanding installation conditions. The ‘Z’ suffix denotes a non-contacting cover plate made of sheet steel on one side of the bearing, which minimises friction losses and prevents lubricant leakage. The designation C3 indicates an increased radial bearing clearance. This additional radial clearance compensates for temperature-induced expansion of the shaft or fit oversizes when the inner ring is pressed on, without the bearing becoming stressed during operation.