The Three-Jaw Chuck - 3: Disadvantages of the Three-Jaw Chuck
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There are certain disadvantages to using a three jaw chuck. Three jaw chucks get used a great deal resulting in a lot of wear and tear on the chuck. Because of the wear and tear, there should be an appropriate amount of maintenance performed.

Three jaw chucks are considered or assumed to run perfectly concentric, but often that is not the case. Chips get inside the faceplate of the chuck and into the scroll, where the jaws are connected to the chuck. These chips often cause the scroll and the teeth of the jaw bottoms to bind, and eventually these parts will wear away and become less than perfect. As a result, the chuck does not grip the part perfectly even and run out can occur.

Three jaw chucks are limited in the size of parts that they can hold, and generally are not considered the best choice if heavy duty machining is being performed..

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label: three jaw chuck advaantages, disadvantages, mounting, replace jaws, soft jaws, mounting styles