The SKF 6003-2Z double-shielded deep groove ball bearing combines a 17mm bore with a compact 35mm outside diameter and 10mm width, making it suitable for rotating assemblies with limited radial and axial installation space. Its single row deep groove raceways accommodate radial loads together with axial forces acting in either direction, within the bearing's rated capacity. As an SKF Explorer bearing, it is engineered for efficient rotation and consistent performance in appropriately designed machinery. SKF specifies a basic dynamic load rating of 6.37kN and a basic static load rating of 3.25kN. These figures help engineers assess fatigue life and loading conditions, particularly in small electric motors, belt-driven mechanisms and light-duty transmission equipment.
The 2Z designation identifies two non-contact sheet steel shields, one on each side of the bearing. These help retain the factory grease and provide a barrier against larger particles, while their non-contact construction minimises friction compared with rubber contact seals. However, metal shields do not provide the same protection against fine dust, water or moisture as a suitable contacting rubber seal. SKF lists a reference speed of 45,000rpm and a limiting speed of 22,000rpm; the limiting speed and actual application conditions must be considered when selecting an operating speed. The bearing has normal (CN) radial internal clearance and a sheet metal cage. For replacement purposes, confirm the complete 6003-2Z designation, as 6003-2RSH contact-sealed and 6003/C3 clearance variants have different operating characteristics.
Typical Applications:
Small electric motors and ventilation fans
Compact belt drives and pulley assemblies
Light-duty gearboxes and power transmission equipment
Precision automation and mechanical positioning systems
Workshop machinery and enclosed rotating shaft assemblies