Replacing the rollers may not be necessary or sufficient. The track on which
they glide wears down much faster than the rollers!
You might consider getting a snap-on, stainless steel, track. It's the thing
onto which the rollers, um, roll. Before you snap it in place, fill in the
low spots with "Liquid Steel" or similar.
By diligent searching, you should be able to find an 8-foot track for about
An Anderson door that I installed had the track wear down to the point
it was barely usable in just a few years. The sliding door at the
back of the house was the most used entry door by a large margin and
it got a good bit of use, but only three people in the house. The
rollers held up for some reason - not sure why.
You merely have a different experience. I've replaced three tracks that were
worn to a frazzle and pock-marked with depressions. After replacing the
tracks, the rollers worked swell. But you're right: ultimately the track
wears down such that the door slides metal on metal and the rollers aren't
I have the same experience. Replaced rollers twice and the track
shows no signs of wear. I agree with Smitty. The only thing that
would wear the gtrack out would be forcing the door to slide metal on
metal, i.e., waiting too long to replace rollers.
The track won't wear down if the door frame is sliding metal-on-metal. By
"track" I mean the raised, rounded, rail onto which the rollers roll.
The fact that you've had to replace the rollers every 30 days (or whatever)
could be a sign that the track *IS* worn down.
Try this: Invest about ten bucks in one of those snap-on rails and forget
about the problem for the next twenty years.
And I'm not calling you a hopeless twit (isn't it fortunate that we're so
civil on this newsgroup?).
Here's how I think it happens.
Aluminum is relatively soft. Someone coming in the door scraps the dirt from
their shoe onto the rail.
The roller either:
a) Pick up the grain/pebble and bangs it the length of the rail, or
b) Pushes it straight down into the rail with about 80 pounds of pressure,
c) Grips the grit in the Nylon and scrapes the rail like a piece of
The rail becomes pitted and holds more grains/pebbles. More for the roller
to pick up.
The process repeats thousands of times.
Eventually the rail is so abraded, the doors frame starts rubbing against
the track. This can be (temporarily) fixed by adjusting the wheels to lift
the door higher.
Here's the test: Have you ever seen a worn-down wheel? I've seen some worn
ones and some broken ones, but never something substantially smaller than
its replacement. And by "substantial" I mean 1/8"-1/4" reduction in
Look at the wheel assembly. The wheels never extend below the part of the
door that moves - the "rail" on which the wheel rides extends UP a
quarter-inch into the door frame. Obviously if the rail wears down enough,
no amount of new wheel will EVER contact it.
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