Deep Groove Ball Bearings SKF 6217 /C3

The SKF 6217 /C3 deep groove ball bearing (85x150x28 mm) offers increased radial clearance for industrial applications subject to thermal stress.

The 6217 /C3 deep groove ball bearing is a single-row rolling bearing manufactured by SKF, designed for predominantly radial and moderate axial loads. Manufactured from standard 100Cr6 bearing steel, this open-type bearing has an inner diameter of 85 mm, an outer diameter of 150 mm and a width of 28 mm. Thanks to its open design, lubricant reaches the rolling elements and raceways unhindered during operation. A sheet steel cage guides the balls evenly in the raceway and ensures smooth running under a wide variety of operating conditions.

Under what operating conditions is the 6217 /C3 deep-groove ball bearing with C3 clearance required?

This deep-groove ball bearing is primarily used where operating temperatures between –20 and +150 degrees occur due to friction or external heat. Thanks to the increased radial clearance, the component compensates for thermal expansion between the shaft and the housing, allowing the rolling elements to roll freely. As no seals are integrated, this design is particularly suitable for oil- or grease-lubricated housings with external sealing.

What does the C3 bearing clearance mean for the 6217 deep-groove ball bearing?

The designation C3 indicates a slightly increased radial clearance compared with the standard version. This increased clearance between the balls and the raceway reduces the risk of internal stresses should tight fits on the shaft cause the inner ring to expand or temperature differences arise between the inner and outer rings. During design, care must be taken to ensure clean operating conditions and a suitable lubricant supply, as the open component offers no integrated protection against particles.