Posted May 6th, 2016 at 4:29 pm by Dan Musick
We received an email this week from a do-it-yourselfer who had installed a Clopay door with an EZ Set torsion spring set up. On his door he has a single spring with a winder at the left end of the torsion assembly. At the right end of the torsion tube there is a bearing housed in a plastic frame that slides into the end bracket, as pictured here.
In the past year the bearing on the right side has come out of the plastic bearing holder a few times. When this happens, the shaft grinds on the bearing frame as the door operates. And, because the cable drum and cable is lower on the right side, this side reaches the floor first when closing, and there is a gap under the left end of the door.
The bearing probably came out because the bearing holder was installed backward. On an improperly installed bearing assembly, the race of the bearing faces the inside. Since there is nothing to hold it, it can come out.
The correct way to fix this is to reverse the black plastic bearing housing.
The bearing holder fits into the end bracket with the race of the bearing touching the cable drum.
When installed this way, the bearing cannot come out of the plastic holder.
On many installations the bearing is turned correctly, but the drum is not installed next to the bearing. If there is a gap between the drum and the bearing, the bearing may slip out. We have also found that a gap can cause the right side of the drum to scrape on the frame, causing the cable to come off the drum when the door opens. The cable drum at each end of the torsion shaft must be touching the race of the bearing.
If the only problem is the bearing being installed backward, and if it looks like too big of a project to correct, you can just install a hose clamp next to the race of the bearing. You can also drill and pin the shaft next to the bearing.