If your in-line wheels seize up or spin slowly and vibrate, they might need new bearings. Rust around the outside of the wheels and/or the sound of dirt grinding inside are also signs that it is time for a change.
Use an Allen wrench to remove the axle from the front wheel.
Step2
Pull out the front wheel.
Step3
Remove the old bearings from either side of the wheel. They should pop right off if you use a bolt or something similar.
Step4
Place new bearings on either side of the wheel. If necessary, use a flat surface for extra leverage.
Step5
Place the wheel in the wheel frame.
Step6
Use the Allen wrench to replace the axle. If your spacer is aluminum, tighten the axle bolts as far as they will go. If your spacer is plastic, tighten the bolts as far as they will go, then loosen them slightly.
Step7
Spin the wheel to see how easily it rolls. If it doesn't spin freely, loosen the axle. If it wobbles, tighten the axle.
Step8
Repeat the steps for the remaining wheels.
Tips & Warnings
Consult the manufacturer's instructions for information about your specific type of skate.
If you skate through water or sand, you'll want to change your bearings every year. If you cover terrain that isn't as rugged, change the bearings approximately every three years.