Chucks are attachments used to hold a workpiece or cutting tool on a machine tool. There are many different types of products. Choices include: clamping chucks, collet chucks, core chucks, diaphragm chucks, draw bar chucks, electrostatic chucks, fixturing chucks, gear chucks, grinding chucks, Jacobs chucks, lathe chucks, magnetic chucks, milling chucks, pull down chucks, roll chucks, safety chucks, scroll chucks, speed chucks, spindle chucks, universal, vacuum chucks, and woodworking chucks. Specialty chucks and proprietary chucks are also commonly available. Product specifications for chucks include: number of jaws, capacity or jaw opening, chuck size or diameter, rated speed, clamping or holding force, chuck actuation, and materials of construction. Chuck features include outer diameter (OD) clamping, inner diameter (ID) clamping, integral brakes, independent jaws, interchangeable jaws, workpiece compensation, and machinability. Quick-change, quick-release, square, rectangular, retracting, self-centering, through-hole, locking, and keyless chucks are also available. 

Clamping chucks, collet chucks, core chucks, drill chucks, diaphragm chucks, draw bar chucks, electrostatic chucks, fixturing chucks, Jacobs’s chucks, pull down chucks, and roll chucks are used in machining applications. Collet chucks hold a workpiece or tool with a multi-finger collet. Typically, the collet fingers expand and retract together. Core chucks and roll chucks have jaws which expand outward to grip the inner diameter (ID) of a roll or tube. Diaphragm chucks mount the top jaws on a steel membrane or diaphragm. Typically, these top jaws are custom-fabricated for specific workholding applications. Drill chucks are keyed or keyless chucks that are used primarily with drilling machines. They are often called Jacobs chucks or Jacobs-style chucks, a reference to the company that standardized a popular, heavy-duty, drill chuck. With draw bar chucks and pull down chucks, the radial movement of the jaws is affected by axial actuation against a fixed, tapered surface. Electrostatic wafer chucks (electrostatic chucks) are designed for semiconductor-manufacturing equipment. Fixturing chucks or clamping chucks are used to locate and hold fixtures, vises, pallets, and molds for automated machining operations.

Chucks are attachments used to hold a workpiece or cutting tool on a machine tool. There are many different types of products. Choices include: clamping chucks, collet chucks, core chucks, diaphragm chucks, draw bar chucks, electrostatic chucks, fixturing chucks, gear chucks, grinding chucks, Jacobs chucks, lathe chucks, magnetic chucks, milling chucks, pull down chucks, roll chucks, safety chucks, scroll chucks, speed chucks, spindle chucks, universal, vacuum chucks, and woodworking chucks. Specialty chucks and proprietary chucks are also commonly available. Product specifications for chucks include: number of jaws, capacity or jaw opening, chuck size or diameter, rated speed, clamping or holding force, chuck actuation, and materials of construction. Chuck features include outer diameter (OD) clamping, inner diameter (ID) clamping, integral brakes, independent jaws, interchangeable jaws, workpiece compensation, and machinability. Quick-change, quick-release, square, rectangular, retracting, self-centering, through-hole, locking, and keyless chucks are also available. 

Clamping chucks, collet chucks, core chucks, drill chucks, diaphragm chucks, draw bar chucks, electrostatic chucks, fixturing chucks, Jacobs’s chucks, pull down chucks, and roll chucks are used in machining applications. Collet chucks hold a workpiece or tool with a multi-finger collet. Typically, the collet fingers expand and retract together. Core chucks and roll chucks have jaws which expand outward to grip the inner diameter (ID) of a roll or tube. Diaphragm chucks mount the top jaws on a steel membrane or diaphragm. Typically, these top jaws are custom-fabricated for specific workholding applications. Drill chucks are keyed or keyless chucks that are used primarily with drilling machines. They are often called Jacobs chucks or Jacobs-style chucks, a reference to the company that standardized a popular, heavy-duty, drill chuck. With draw bar chucks and pull down chucks, the radial movement of the jaws is affected by axial actuation against a fixed, tapered surface. Electrostatic wafer chucks (electrostatic chucks) are designed for semiconductor-manufacturing equipment. Fixturing chucks or clamping chucks are used to locate and hold fixtures, vises, pallets, and molds for automated machining operations.

Gear chucks, grinding chucks, lathe chucks, magnetic chucks, milling chucks, safety chucks, scroll chucks, speed chucks, universal chucks, vacuum chucks, and woodworking chucks are used in a variety of applications. Gear chucks are designed to hold gears during machining. Grinding chucks used in grinding equipment. Lathe chucks are designed for use with lathes or turning centers. Magnetic chucks use the magnetic force from a permanent magnet or electromagnet to achieve chucking or holding action. Milling chucks are designed to hold machine tools for milling operations. Safety chucks have special guards and safety features to prevent finger damage or other operator injury. Scroll chucks have jaws that move together, in and out radially. Speed chucks are designed for rapid tool or workpiece chucking and unchucking. Universal chucks have jaws that move together, toward or away from the center (i.e., self-centering, concentric). Vacuum chucks apply a vacuum to the back of the workpiece to achieve chucking or holding action.