Plus the seal on the bearing will protect dust dirt and grime from getting to the bearing grease.
Roller garage door motor replacement.
Dura lift nylon garage door rollers quiet the opening and closing of sectional garage doors by up to 75.
Most doors are installed with bearingless metal or plastic door rollers that are much noisier and have shorter cycle lifes 10 000 cycles is the door industry standard.
Pull the garage door so the roller lines up with the bent track and pop the roller out to replace it.
A replacement roller kit for old noisy or broken sectional track style garage doors the nylon wheel results in the quieter and smoother opening and closing of your garage door.
To do this you need to switch off the power supply disconnect the motor from the garage door mechanism and then undo all the connections between the motor and the opening mechanism.
Continue working on the rollers one at a time until you ve replaced all but the top 2 rollers.