Deep Groove Ball Bearings SKF 6205 -Z/C3

The SKF 6205 -Z/C3 deep groove ball bearing, with a 25 mm bore, single-sided sheet metal cover and C3 clearance, offers reliable running characteristics under thermal loads.

The 6205 -Z/C3 deep groove ball bearing is a single-row radial ball bearing in the SKF Explorer design, made from standard rolling-element bearing steel (100Cr6). With key dimensions of 25 mm inner diameter and 52 mm outer diameter, and a width of 15 mm, this bearing type primarily accommodates radial loads whilst also handling moderate axial loads. The integrated sheet steel cage guides the rolling elements evenly within the raceway. With dimensional accuracy to P6 and running accuracy to P5, the component meets defined specifications for concentricity and form tolerances in continuous industrial use.

What is the 6205-Z/C3 deep groove ball bearing suitable for in operation?

Typical applications include rotating shaft bearings and drive systems with housing lubrication. The single-sided sheet metal cover ensures that one side of the bearing remains accessible for lubricant entry from inside the housing, whilst the metal cover plate protects against the ingress of coarse contaminants from the outside. Designs thus benefit from open lubricant circulation whilst maintaining basic protection. Manufacture from 100Cr6 rolling-bearing steel gives the raceways high wear resistance under normal operating conditions within a temperature range of –20 to +150 degrees Celsius.

When is the combination of a Z-cover plate and C3 bearing clearance appropriate?

The increased radial clearance (C3) compensates for operational thermal expansion when temperature differences occur between the inner and outer rings or when tight fits are specified. Compared with bearings with standard clearance, the increased radial clearance helps to prevent the rolling elements from becoming stressed when heated. The single-sided Z-seal operates without contact and, unlike sliding seals, does not generate any additional frictional torque. During design, the open side should face the lubrication side of the housing.