Deep Groove Ball Bearings SKF 6203 /C3

The SKF 6203/C3 deep groove ball bearing is an open rolling bearing measuring 17 × 40 × 12 mm, with increased radial clearance and P6/P5 precision.

The 6203 /C3 deep groove ball bearing is a single-row rolling bearing made from standard bearing steel (100Cr6) in SKF’s Explorer performance class. With a bore of 17 mm, an outer diameter of 40 mm and a width of 12 mm, this design primarily accommodates radial loads. Due to its open design without integrated seals, the bearing is particularly suitable for assemblies with on-site lubrication within a temperature range of -20 to +150 degrees Celsius.

What is the 6203/C3 deep groove ball bearing suitable for?

Design engineers and maintenance technicians use this design primarily in enclosed gearboxes and housings where oil lubrication or external sealing is already in place. The sheet steel cage guides the rolling elements with low vibration during continuous rotational movement. Thanks to tolerance classes P6 for dimensional accuracy and P5 for running accuracy, the bearing supports smooth rotation in designs that impose concentricity requirements exceeding standard tolerances.

What does the C3 bearing clearance mean for your bearing design?

The C3 designation indicates a slightly increased radial bearing clearance compared with the standard version. This increased clearance between the balls and raceways is necessary when thermal expansion occurs during operation or when tight fits on the shaft and housing reduce the bearing clearance after installation. During design, care must be taken to ensure that the open bearing remains protected from contamination and receives a continuous supply of suitable lubricants.