XYZ WOOD PARTS

I will use it on wood parts. The biggest problem with a radial bearing
rail movment is dirt and grit,scratches in the cold rolled steel rail.
I can sew up a primative bellows system to protect the rails and
beaings. Its not going to be pretty! Results is what counts. I
calculate radial load per bearing at 1000 lbs static. There will be
four on top plus three bearings on sides, with center, spring loaded.
The bearings are from Mitchiel Motion picture dollys used to push
Panaflexes around a studio. They are double rubber sealed with a tini
bit of California beach sand left in them. I will have the bearings
role raw on the rails. I think, monster radial bearings equalls long
life on a cold rolled shaft. The next best thing is use,free radial
rollar type bearings because they cover more race contact area. On a
motion picture dolly these bearings can handle three people plus
300lbs of camera equipment on them and can be pushed at medium speeds
for miles with out any problems to the bearings. The dolly allso
weighs 400 lbs! The stabillity in movements you have seen in most
walking rolling shots in most popular movies. This is my viewpoint
for sticking with primative means.

Smack me in the head if i am wrong, i might learn something!

John Mars