What are the standard sizes of skateboard bearings?

Generally, in the skateboard industry, the 608 skateboard bearing (8x22x7mm) is the most popular and widely used bearing. Most customers choose this specification, but there are also other miniature skateboard bearings used in skateboards.

1.608 Bearing

Inner Diameter - 8 mm

Outer Diameter - 22 mm

Width (non-sealed) - 7 mm

Width (double shielded) - 7 mm

Typical Uses - Commonly used in inline skate wheels, scooter wheels, and skateboard wheels, and sometimes in quad speed skate wheels.

2.627 Bearing

Inner Diameter - 7 mm

Outer Diameter - 22 mm

Width (non-sealed) - 7 mm

Width (double shielded) - 7 mm

Typical Uses - Often used in artistic and recreational quad roller skate wheels, and sometimes in quad speed skate wheels.

3.688 Bearing

Recently, the inline skating industry has been using the "688" bearing, which is a micro bearing designed for wheels with mini hubs. This is done to reduce the weight of the wheels and bearings while still maintaining a relatively low rolling resistance.

Inner Diameter - 8 mm

Outer Diameter - 16 mm

Width (unsealed) - 4 mm

Width (double shielded) - 4 mm

Typical Uses - Ultra-light "micro bearings" used in some newer fitness and speed skate wheels.

4.698 Bearing

Inner Diameter - 8 mm

Outer Diameter - 19 mm

Width (non-sealed) - 6 mm or width (two shields) - 6mm

Typical Uses - Ultra-light "micro bearings" used as standard bearings in some new fitness wheels and speed skate wheels.

Mastering skateboard bearing techniques can help enhance rolling performance and extend bearing life:

I.Regular Cleaning:Periodically disassemble the skateboard bearings, using bearing cleaner and cloth to remove dust and dirt to keep them smooth.

II.Proper Lubrication: After cleaning, use the appropriate lubricant (like bearing oil) to lightly drop into each bearing, avoiding excess to prevent resistance.

III.Avoid Moisture: Try to avoid skating in damp environments, as moisture can cause skateboard bearings to rust and damage internal components.

For more information, feel free to contact QIBR