Eccentric Turning Tips and Tricks

Derrick Hogan, CNC technology instructor at North Georgia Technical College, shows how to offset a workpiece 4 jaw lathe chuck.

Eccentric turning, or offset turning, is a pretty common lathe operation. It is typically done to machine parts with features that are not concentric to the spindle axis, such as the throws of a crankshaft or the eccentric drive used by a steam engine to operate a slide valve. One of the most common ways to offset a workpiece on the lathe is by using a 4 jaw chuck and adjusting the jaws.

In this video, Derrick shows how to design, set up, and machine a workpiece with some simple offset features.

Did you find this tip useful? Leave a comment below and don’t forget to subscribe.