What the 608ZZ ball bearing is used for

The 608ZZ ball bearing is a standard 8 x 22 x 7 mm bearing used in many 3D printers and motion assemblies. This classic skate bearing supports smooth rolling movement in common printer components such as idlers, supports, and selected carriage systems.

Key features and common functions

• Standard 608ZZ format: Uses the widely recognised 8 x 22 x 7 mm bearing size.
• Classic skate bearing style: Commonly selected where a printer or mechanical assembly is designed around 608-size bearings.
• Useful in multiple printer assemblies: Found in extruder idlers, shaft supports, and belt idlers across a wide range of machines.
• Suitable for selected carriage designs: Used in some linear carriages, including SeeMeCNC's Cheapskate bearings.
• Also used for Z axis support alignment: Typically seen on Z axis lead screw alignment plates.

Where a 608ZZ bearing is commonly used in 3D printers

This bearing is commonly installed anywhere a printer uses the classic 608 form factor for rolling support or guided movement. Typical 3D printer applications include extruder idler mechanisms, shaft support points, belt idler locations, and some carriage assemblies that rely on this bearing size.

For builders, repair work, and replacement part sourcing, the 608ZZ bearing is a common choice when the printer hardware specifically calls for an 8 x 22 x 7 mm skate bearing.