Deep Groove Ball Bearings SKF 6208 -2Z/C3

The SKF 6208 -2Z/C3 deep-groove ball bearing (40x80x18 mm) features non-contacting sheet metal shims and increased C3 bearing clearance for radial loads at higher operating temperatures.

The single-row deep groove ball bearing 6208 -2Z/C3 is a standardised rolling bearing made from conventional 100Cr6 bearing steel. The bearing is primarily designed to accommodate radial forces as well as moderate axial forces in both directions. This version features a 40 mm bore, an outer diameter of 80 mm and a width of 18 mm. Thanks to its manufacture to standard tolerance P0, the component can be fitted precisely onto cylindrical shafts. A sheet steel cage guides the rolling elements at a uniform distance within the bearing.

What is the 6208-2Z/C3 deep groove ball bearing suitable for?

This ball bearing is primarily used in bearing arrangements involving high speeds and predominantly radial loads. In addition to the main load, it accommodates moderate axial forces in both directions. Designed for a temperature range of -20 to +120 degrees, the bearing operates reliably in thermally demanding environments. The flangeless cylindrical outer ring allows for direct installation in standardised housing bores.

What is the function of the 2Z cover plates and the C3 clearance?

The sheet steel cover plates on both sides (designation 2Z) keep coarse dirt particles out of the bearing interior. As the covers operate without contact, they do not generate any additional friction and allow for high speeds. The suffix C3 also indicates a slightly increased radial bearing clearance. This increased clearance between the balls and raceways serves to compensate for thermal expansion caused by operational heating or to accommodate reduced residual clearance resulting from tight fits on the shaft and housing.