Deep Groove Ball Bearings SKF 6203 -2Z/C3

The SKF 6203 -2Z/C3 deep groove ball bearing, with dimensions of 17x40x12 mm, end shields on both sides and a C3 clearance, offers a reliable solution for rotating shafts.

The 6203 -2Z/C3 deep-groove ball bearing is a single-row radial ball bearing made from standard rolling-element bearing steel (100Cr6), with an inner diameter of 17 mm, an outer diameter of 40 mm and a width of 12 mm. The manufacturer, SKF, produces this version in the Explorer class with increased dimensional accuracy P6 and running accuracy P5. Two non-contacting sheet metal cover plates protect the interior from coarse particles without generating additional friction. As a result, the component absorbs predominantly radial and moderate axial forces in both directions with low vibration.

What is the 6203-2Z/C3 deep-groove ball bearing suitable for in industrial applications?

Design engineers and maintenance technicians primarily use this bearing unit in rotating shaft assemblies subject to combined loads. Thanks to the combination of a sheet steel cage and a non-contact gap seal, the bearing operates with low friction even at higher speeds. The permissible temperature range of –20 to +120 degrees enables operation in industrial environments where significant heat is generated. As the outer ring is flangeless, the component fits easily into standardised cylindrical housing bores.

What are the advantages of the C3 radial clearance and tolerance class P6/P5?

The designation C3 indicates a slightly increased radial bearing clearance as supplied. This radial clearance compensates for thermal expansion that occurs during operation when the shaft or inner ring heats up. In addition, the extra bearing clearance absorbs slight deflections or stresses that may arise from tight fits. Combined with dimensional accuracy to Class P6 and running accuracy to Class P5, the shaft runs particularly smoothly and quietly. This contributes to a long service life in automated industrial plants.