EZO 608-2RSC3 Sealed Miniature C3 Ball Bearing 8 x 22 x 7 mm

The EZO 608-2RSC3 is a single row deep groove ball bearing with two contact rubber seals (2RS) and C3 radial internal clearance. It measures 8 x 22 x 7 mm (bore x outer diameter x width) and carries a basic dynamic load rating of 3,293 N and a basic static load rating of 1,379 N, with a limiting speed of 34,000 rpm on grease.

The 608 size is one of the most common small bearings, used in roller skates and skateboards, 3D printers, fans, small motors and general light machinery. The 2RS seals hold the grease in and keep dust and splashes out, and the C3 clearance suits press fits and bearings that run warm.

Where this product is used

• Skateboards, scooters and roller skates
• Fans, small motors and appliances
• 3D printers and light machinery

Features

• Two contact rubber seals (2RS) of nitrile rubber (NBR) hold the factory grease in and keep dust, dirt and splashes out
• C3 radial internal clearance, larger than Normal, which suits interference fits and temperature differences between the rings
• Basic dynamic load rating 3.29 kN and static load rating 1.38 kN, with a limiting speed of 34,000 rpm on grease

Key specifications

Selecting the right option

Contact rubber seals (2RS) give better protection against dust, dirt and splashes than shields and hold the factory grease in. The seal lips add friction, so a sealed bearing runs slower than an open or shielded bearing of the same size, and a high speed application is better served by an open or shielded bearing.

C3 radial internal clearance is larger than Normal (CN). Choose C3 where the bearing will run with an interference fit on the shaft or in the housing, or where the inner ring will run warmer than the outer ring, because both take up clearance. Keep Normal clearance for light fits, low temperature rise and quiet running.

Fitting and use

Check the load and speed against the figures for your size before ordering and apply a suitable safety factor. Deep groove bearings must always carry a minimum radial load so the balls roll rather than slide, and heavy axial loads should be checked with AIMS before ordering.

Press on the ring that is being fitted, not the other ring or the balls: force goes through the side face of the inner ring on a shaft and through the outer ring in a housing.

Sealed bearings are lubricated at the factory and built for inner ring rotation. Do not wash them or heat them before mounting, and do not rely on them for high speed outer ring rotation.