Re: Another 4th Axis Thread Fanuc motor Tanshing VRNC-210
Why not bore the gear to fit the Yaskawa shaft. That's what I did with a retrofit that had Fanuc motors with taper shafts. I just bored the gear to a light interference fit and heated it up and dropped it onto the new motor shaft, a nice shrink fit. I made a stop so the gear would be in the correct position. To make doubly sure the gear won't move, use a shaft collar and tighten it on the hub of the gear, this makes a very tight non-slip connection, better than a keyway.
Jim Dawson
Sandy, Oregon, USA