Deep Groove Ball Bearings SKF 6205 -2Z/C3

The SKF 6205 -2Z/C3 deep-groove ball bearing, with a 25 mm bore, end shields on both sides and C3 clearance, offers reliable operation at high speeds and under high temperatures.

The 6205 -2Z/C3 deep groove ball bearing is a single-row radial ball bearing made from standard rolling-element steel (100Cr6) in SKF’s Explorer series. With dimensions of a 25 mm bore, 52 mm outside diameter and 15 mm width, it is suitable for rotating shafts subject to predominantly radial loads. Thanks to the non-contact cover plates on both sides, the bearing keeps out dirt particles whilst retaining the lubricant within the rolling element chamber. A robust sheet steel cage guides the rolling elements evenly.

What loads and operating conditions can the 6205-2Z/C3 deep-groove ball bearing accommodate?

The bearing design primarily accommodates radial forces as well as moderate axial forces in both directions. Manufactured to the Explorer class with dimensional accuracy P6 and running accuracy P5, the rolling bearing runs very smoothly. In applications involving higher speeds, the non-contacting 2Z arrangement produces minimal friction losses, whilst the specified temperature range of –20 to +120 degrees ensures stable running characteristics.

What does the C3 bearing clearance mean for the 6205 -2Z/C3 deep groove ball bearing?

The designation C3 indicates a slightly increased radial clearance. This clearance between the rolling elements and raceways compensates for thermal expansion that occurs at higher operating temperatures or with tight press fits on the shaft and housing. If your system generates significant heat or if you are fitting the inner and outer rings with a tight fit, the C3 bearing clearance prevents the rolling elements from seizing. For standard applications without temperature differences, standard clearance is often sufficient; under dynamic heating, C3 ensures smooth running.