What Is a Three Jaw Chuck?
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A three jaw chuck is used to hold a part on a lathe for round work. This part is notable for its protruding grip design that allows it to be used for expanded work.
On a three jaw chuck, all three jaws close or open at the same time, creating a firm symmetrical grip on the part that is going to be worked on. This feature also causes the chuck to be self-centering, which helps ensure professional grade work. This type of chuck is available in a wide variety of sizes and is tightened onto the part using a key.
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