Is there a heavy duty version of this roller?

Question

I have replaced the wheels on my 4'door (8' doorwall) 3 times now.  The adjustment screw pushes out on one side only.  I have installed nuts inside (even an acorn nut on the inside end of the adjuster) but the 3/4" wide case collapses... the door is very heavy.  Do you have a heavy duty model wheel assembly to replace the 81-033?  maybe a double roller type?  I'll buy 6 or 8 of them (several door walls).
Thanks

Paul · Accepted Answer

If you feel you're handy enough, you might be able to adapt our 81-030 double wheel assembly. You would reverse the adjusting screw with the frame screw. You would then install the roller from underneath the door with a stub-end screw so not to break the glass. Even better, maybe pack some rubber strips to prevent breakage.