Mount these chucks to a lathe's spindle to hold round workpieces. Also known as scroll chucks, they are self centering—all jaws move in unison, centering the workpiece as they close. Made of forged steel, these chucks are strong and wear resistant, so they maintain their shape even with continuous use. They’re often used for precision machining. You can run them at higher speeds than cast iron chucks, and they’ll last longer. Use the included lathe chuck wrench to open and close the jaws.

Chucks with fixed jaws come with one set of outside jaws and one set of inside jaws. These jaws are one-piece and keyed, so they’re best for rigid and permanent setups where you don’t need to change your jaw style. They’re commonly used in dedicated turning operations or roughing applications.

Chucks with reversible jaws come with one set of jaws that can be installed for either an inside or outside grip. These jaws are two-piece and tongue-and-groove, so they’re great for when you need to regularly switch top jaws or use soft jaws for custom clamping. This setup offers the best mix of flexibility and repeatable accuracy. Those with six jaws hold your workpiece tighter than chucks with three jaws. They also distribute the clamping force more evenly, so you’re less likely to deform parts with thin walls.

Use high-pressure grease to improve grip and prolong the life of your chuck.

A mounting plate (sold separately) is required to mount the chuck to a lathe. Select a mounting plate that matches the diameter of the lathe chuck, your lathe’s spindle type, and the spindle OD.