Trunnion ram bearing fix

[ieezitin]

Tom

thank you for the little math on heating and expansion rates, one worry would be to me that it may distort the plate it has three machined surfaces.

here are a couple of shots of the old one that i have tried to repair but failed.

This shot shows i placed the old pin back in the plate and held the plate square to the pin then i back welded it.





this shot shows what it looks like from the front, this whole plate is buried in the spur-gear hub which has a milled channel to receive this plate. The hole you see at the top is for the bronze bush threaded to an acme rod for ram forward advanced motion






This shot shows the milled ledge, the outer one fits into the spur-gear channel the perpendicular one on the 90* is there to accept a plate the is bolted to the gear face this plate holds it in place and stops it from walking forward, the fit on the plate was in my opinion was designed for a clearance fit but the spigot was probably a close running fit.

well this repair failed due to the spigot being out in one direction by about .002, when i intalled it back on the machine it squealed and the plate got hot.






Thanks for all of everyone's input.

Anthony