C
chiliviking
Guest
I had a crash today with my Sheldon lathe and it ate the teeth off the gear in the reverser/lead screw drive assy. The gear was phenolic so it sheared the teeth without further damage. I called National Acme ( dealer for Sheldon parts) and was told the gear was not in stock but was available. I asked how much and was told $595 and it would take 4 to 6 weeks. When I regained conciuosness I said thank you , have a nice day. He was insulted that I thought that was a rediculous price.
I ordered an involute gear cutter from MSC and will make my own. I now need to decide on a material that will have properties similar to the original phenolic. If this happens again I want the gear to shear rather than tear up the whole gear train. If using a plastic material of some kind I will press a brass bushing in the center. The gear is engaged any time the lead screw is turning so wear is a factor.
What suggestions to you all have?
I ordered an involute gear cutter from MSC and will make my own. I now need to decide on a material that will have properties similar to the original phenolic. If this happens again I want the gear to shear rather than tear up the whole gear train. If using a plastic material of some kind I will press a brass bushing in the center. The gear is engaged any time the lead screw is turning so wear is a factor.
What suggestions to you all have?