How to lube the rollers by yourself?
After you’ve shut off the power, cleaned the grease from the garage door tracks, and inspected each roller to ensure none are cracked, misshapen, worn down, or otherwise in need of replacement, you can lube your rollers.
If your garage door has steel rollers, apply the lubricant directly onto the ball bearings on the rollers’ innermost part. Then, wipe off any excessive grease to prevent your door from becoming unbalanced.
If you have nylon rollers with exposed bearings, you apply the lubricant to the exterior of where the rollers and shaft meet. Wipe off any lubricant that gets on the nylon.
If you have nylon rollers with sealed ball bearings, you won’t have to lubricate them.