I have a 1956 model Gorton 8 1/2d vertical milling machine with a compound head , power feed and b and s #9 spindle taper and want to put a dro on it but am not familiar with aftermarket add ons or how the reader heads mount. I am looking at a KA mitutoyo unit on sale now. My table is 35 1/4 in long and the longitudinal power feed is limited to about 17inches before a shear pin breaks in the gear train. Travel is 10 in on cross feed. not sure how the slides and readers mount. The back of the table has about 1 3/8 inches of clearance from the table top to a street elbow drain for the coolant system. I think this is where the slide reader mounts and it cannot obviously be wider than that. I assume you have to drill into the table to mount these things. any advice?
19 years ago