Something you should know if you happen to be using the early haas indexers, is that they were either stepper motors or open loop, or both, I can't remember for sure. Anyway, when they stopped they may or may not be at the intended programmed angle. One example would be, if they were rotated too fast for the weight of the attached fixture/part they would stop short or overshoot the programmed angle depending on the situation. My 1st one (new in 1985) had this problem so I always tried to play it safe using a slower rotation feed. Haas improved their indexers and rotary tables to eliminate the problem somtime after that date but I'm not sure when that occured. I sold my old one as soon as the improved ones became available. |