In order to decide what size rollers you need to buy for a replacement, you must measure all the way across the width of the roller head using a tape measure. Standard roller sizes are at one inch, two inches or three inches. Exceptions are sizes that are usually �� short: ��, 1 ��, or 2 ��.
On the sides of the door, and attached to the hinges, are garage door rollers. These are circular and contain ball bearings. Any exposed ball bearings need to be lubricated. Since it can be difficult to get inside the rollers, some formulas of grease come with thin tool attachments for this work. Sep 14, 2020