SKF 608-2Z Metal Shielded Single Row Deep Groove Ball Bearing 8x22x7mm

The SKF 608-2Z shielded miniature deep groove ball bearing is a compact rolling bearing for 8mm shafts, providing low-friction rotational support within a 22mm outside diameter and 7mm width. Its single row deep groove construction accommodates predominantly radial loads alongside axial forces in either direction, within the bearing's rated capacity. SKF specifies a basic dynamic load rating of 3.45kN and a basic static load rating of 1.37kN, allowing designers and maintenance engineers to assess bearing life and operating loads. The 608 designation is widely used in compact rotating assemblies, but the complete suffix is important: this 2Z version uses metal shields, rather than the contacting rubber seals found on alternatives such as the 608-2RSH.

The two non-contact steel shields help retain the factory grease while offering protection against larger particles, without the additional rubbing resistance of contact seals. This makes the SKF 608-2Z particularly appropriate for clean or relatively well-protected environments where low friction and speed capability are priorities. SKF lists a reference speed of 75,000rpm and a limiting speed of 38,000rpm; these are catalogue ratings rather than guaranteed continuous operating speeds under every load and temperature condition. The bearing has normal (CN) radial internal clearance and a pressed steel cage. When replacing an existing bearing, confirm the 8 x 22 x 7mm dimensions, shield arrangement and clearance class, and apply mounting force to the ring being fitted to avoid damaging the raceways.

Typical Applications:

Small electric motors and compact cooling fans

Precision guide rollers and tracking mechanisms

Light-duty conveyor and transfer roller assemblies

Model engineering and miniature mechanical drives

Compact automation and instrument assemblies