SKF 6203-2Z Metal Shielded Single Row Deep Groove Ball Bearing 17x40x12mm

The SKF 6203-2Z double shielded deep groove ball bearing is a versatile component for rotating assemblies requiring a 17mm shaft bore and a compact 40mm outside diameter. Its 12mm width fits standard 6203 bearing housings, while its single row deep groove construction accommodates radial loads together with axial forces in either direction, subject to the bearing's rated capacity. SKF specifies a basic dynamic load rating of 9.95kN and a basic static load rating of 4.75kN, supporting informed selection for continuously rotating shafts and intermittent mechanical loads. As an SKF Explorer bearing, it is designed for efficient running and consistent performance in appropriately specified applications. The 6203 series offers a useful balance between compact dimensions, load capacity and rotational speed.

The 2Z suffix identifies a steel shield on each side, rather than rubber contact seals. These non-contact shields help retain the factory-applied grease and restrict larger airborne particles while producing less frictional resistance than contacting seals. They are therefore particularly suitable for relatively clean motor housings, cooling fans and enclosed drive assemblies, although they provide less protection against water and fine contamination than contact-sealed alternatives. SKF lists a reference speed of 38,000rpm and a limiting speed of 19,000rpm; the limiting speed is not a guarantee of permissible continuous operation under every load and temperature condition. Normal (CN) radial internal clearance differs from the increased clearance of the 6203-2Z/C3 variant. For replacement work, confirm the shield arrangement, clearance and mounting dimensions to ensure compatibility with the original equipment.

Typical Applications:

Small and medium industrial electric motors

Ventilation fans and air circulation units

Compact centrifugal pumps and drive assemblies

Conveyor rollers and light industrial transmissions

Workshop machinery and mechanical power transmission systems