We have a 5X20 Chipmaster at the museum where I volunteer. It has been a lovely little machine,and is very solid and ridgid for its size. We are having a problem with it at the present though, and would appreciate any information about the variable speed drive. It is one of those double cone arrangements with hardened steel balls between them. Tilting the axis if the balls makes the effective radius of the drive and driven cones change, thus varying the output speed. Our problem is that it will no longer change speed smoothly from hight to low speed or vise versa. Has anyone else had this experience? I suspect that the 5 balls are worn slightly, and I'm considering swapping them upside down to get the load onto a previously unused section of the ball. Is this reasonable, or should we just replace it with a shaft and a variable frequency drive?
13 years ago