I thought I had a full set of change gears... I was trying to cut a 1mm thread pitch and was setting up the gears, it called for a 40 tooth and 127 tooth, I put the 127 on and went through the stack and no 40... How do I tell if the gears are Metric or Imperial? The lathe is a JET but it came from URPE in Spain in the early 80's.
I'm leaning toward Metric, OD is 4.25" or 108mm, Shaft size is 22.22mm or .875" but the key slot is what I'm basing my assumption on as it's 6mm or .236" not .250
If it's metric the module comes out to 1.5, the gear I'm measuring is a 70 tooth.
Also what else do I need to know to find a replacement gear
Thanks
I'm leaning toward Metric, OD is 4.25" or 108mm, Shaft size is 22.22mm or .875" but the key slot is what I'm basing my assumption on as it's 6mm or .236" not .250
If it's metric the module comes out to 1.5, the gear I'm measuring is a 70 tooth.
Also what else do I need to know to find a replacement gear
Thanks