"Danny D." wrote:
Disassembling my first torsion spring setup, on my 8'wide by 7'tall
garage door, I just found something unexpected.

My single-spring 7'wide garage door doesn't have a center bearing.
http://www3.picturepush.com/photo/a/...g/11428496.jpg

Is that normal not to have a center bearing?
http://www4.picturepush.com/photo/a/...g/11428497.jpg

I have a bearing on each end, but no center bearing?
http://www3.picturepush.com/photo/a/...g/11428516.jpg

The reason I ask is that the center, when hand spun, with no weight on it
other than the loose spring, has about a 1/4 inch sag in the center.
http://www5.picturepush.com/photo/a/...g/11428533.jpg

Seems to me, I was expecting a center bearing.

Can it be that single-spring torsion systems don't have center bearings?

Here's my single door's center bracket. As far as I know the door is
original to the house, so it's about 57 years old. The torsion spring was
replaced something like 10 years ago, but not by me.

To be honest, I don't know if that's a bearing or a bushing, but the bar is
definitely supported in the center bracket by whatever that is. The
bracket is mounted with 2 lag bolts, one into the header and the other into
the cripple stud. It does not move at all as the door goes up and down..

Bearing or Bushing:

http://i440.photobucket.com/albums/q...3209104153.jpg

Bracket Mounting:

http://i440.photobucket.com/albums/q...3209023586.jpg