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What are the different size bearings and their typical use ?
Last Updated: 03/23/2011
608 Bearings ( Most common bearings)
Inside Diameter - 8 millimeters
Outside Diameter - 22 millimeters
Width (unsealed) - 7 millimeters
Width (two shields) - 7 Millimeters
Typical Use - Commonly used for inline skate wheels, scooter wheels, and skateboard wheels, and sometimes also used for quad speed skate wheels.

627 Bearings
Inside Diameter - 7 millimeters
Outside Diameter - 22 millimeters
Width (unsealed) - 7 millimeters
Width (two shields) - 7 millimeters
Typical Use - Often used in artistic and recreational quad roller skate wheels and sometimes also in quad speed skate wheels.

688 Bearings
Inside Diameter - 8 millimeters
Outside Diameter - 16 millimeters
Width (unsealed) - 4 millimeters
Width (two shields) - 5 millimeters
Typical Use - Extra light "micro-bearing" that is the standard bearing used in some of the newer fitness and speed skate wheels.

698 Bearings
Inside Diameter - 8 millimeters
Outside Diameter - 19 millimeters
Width (unsealed) - 6 millimeters
Width (two shields) - millimeters
Typical Use - Extra light "micro-bearing" that is the standard bearing used in some of the newer fitness and speed skate wheels.
Tags: bearings, size


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