Hello all,

First time posting. Spent a couple of days looking for a thread that might have an answer to our challenge. Our Bridgeport Interact 412 w a Heidenhain 151 Controller starts up fine. Had been sitting for a while, when we would run a program we would get a gross positioning error. Problem was the ways weren't getting enough lube. sorted it out. Don't get the error message anymore. Now the machine starts up fine, but while running a program, it will randomly stop moving. Spindle still running coolant flowing. During troubleshooting, out of frustration our machinist whacked the table with a soft mallet. Low and behold it started moving. It will randomly stop in X, Y or Z axis. Whack the table, the program will continue in what ever direction it was moving. We're baffled.

Looking for some insight.

Alan