More about Chucks

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Chucks are machine components used to hold various cutting and drilling edges in a rigid position while they perform the necessary operation. Essentially specialized clamps, chucks are regularly used in drills, milling and grinding machines, and lathes. Their shape and size rating depends on the type of application for which they are designed. Among the types available are collet, impact wrench, drill, buffing machine and pneumatic (air) chucks.

Air chucks are used for pneumatic devices such as automatic pumps and other inflation devices. They fit at the end of the pneumatic tube and over the valve of the attached inflation device. Collet chucks provide grip and release mechanisms for a wide range of equipment and offer rapid setup times and exceptional precision. Standard collet chucks have a round opening, although they are also made to accept other shapes, such as hexagonal and square parts. Both manual and air-operated fixtures are available, with air-operated designs providing faster tool changing times.

Various types of drill chucks are produced by manufacturers, including Albrecht chucks, Jacobs chucks and hammer drill chucks. Certain chucks can be attached directly to the drill machine spindle, while others require a chuck arbor, which is fit to the drill machine spindle and the drill chuck. For this reason, users must know the spindle size before purchasing a chuck or chuck arbor; whether the spindle is male or female will determine the type of taper needed.

Drill chucks each have a maximum rpm rating, which, given the same materials are used during construction, decreases as the size of the tool increases. This is because a larger tool is performing more work, while the same chuck components are used to hold the tool in place. Mount and shank specifications are also provided. High-torque and precision chucks for various CNC and dedicated machining operations are produced by select manufacturers.