Deep Groove Ball Bearings SKF 6204 /C3

The SKF 6204/C3 deep groove ball bearing, measuring 20x47x14 mm and featuring an increased C3 clearance, ensures smooth running at elevated operating temperatures.

The 6204/C3 deep groove ball bearing is a single-row rolling bearing made from 100Cr6 standard bearing steel. In the SKF Explorer version, this open design combines dimensional accuracy to tolerance class P6 with running accuracy to class P5. Designed for shaft diameters of 20 mm, this rolling bearing accommodates radial loads as well as axial forces. A sturdy sheet-steel cage guides the rolling elements at operating temperatures ranging from –20 to +150 degrees Celsius. The open design allows external lubricant to reach the raceways unimpeded.

Where is the 6204/C3 deep groove ball bearing used?

This open ball bearing is primarily used in enclosed assemblies where lubricating oil or grease is supplied via a housing. Common applications include enclosed housing designs and shaft bearings with on-site sealing of the entire system. As the rolling elements are exposed, friction losses are lower than with contact-sealed variants. The design, rated up to +150 degrees, allows operation even in high-temperature environments. The flangeless cylindrical outer ring fits flush into suitable housing bores.

Why is the C3 bearing clearance crucial for this rolling bearing?

The designation C3 indicates a slightly increased radial clearance compared with the standard version. This variant serves to prevent the rolling elements from becoming stressed when temperature differences occur between the rotating shaft and the housing during operation. If the shaft expands due to heat, sufficient operating clearance is maintained within the bearing housing. Similarly, the C3 bearing clearance compensates for the narrowing of the inner ring that occurs during press-fitting with a tight fit. The combination of increased clearance and precise P5 running accuracy thus contributes to the desired smooth running.