Definition : Devices designed to attach and center rotating tools (typically drill bits and burs) to the equipment that provides the rotatory power (e.g., drill, handpiece). Drill chucks typically consist of a clamp-like device with three jaws that permit self-centering of the rotating tool, most chucks have a capacity up to 0.5 inch (13 mm) diameter, but some may allow larger diameters up to 1 inch (25 mm). Drill chucks are usually provided with a special key to tighten and loosen the rotating tool; some chucks permit attachment of rotatory tools using only twisting hand pressure (i.e., keyless chucks). Drill chucks are used in healthcare facilities for drilling devices during surgical, dental, orthopedic, and postmortem procedures; they are also intended for rotatory drills used to repair medical and other hospital devices.
Entry Terms : "Handpiece Chucks, Drill" , "Chucks, Drill"
UMDC code : 23676