500001009 - 5/16 Inch Drill Chuck with MT2 Arbor Assembly

Precision Tooling for Accurate Machining

The 5/16" (8mm) Drill Chuck with MT2 Arbor is an essential accessory for machinists and maintenance professionals seeking reliability and precision in their drilling operations. Designed to interface seamlessly with machines equipped with a #2 Morse Taper (MT2) spindle, this chuck assembly transforms your drill press or lathe tailstock into a versatile station capable of holding a wide range of straight-shank tooling. The 5/16-inch (8mm) capacity is perfectly suited for small to medium-diameter drilling tasks, covering the most common bit sizes used in precision work.

Constructed from high-grade steel, the chuck body and jaws are engineered to withstand the torque and stresses of continuous use. The internal mechanism ensures smooth operation when opening and closing the jaws, while the included key allows the operator to apply maximum clamping force. This prevents the drill bit from slipping during heavy cuts or when drilling through tough materials like stainless steel or cast iron. The concentricity of the chuck is maintained to strict tolerances, ensuring that runout is minimized, which is critical for achieving accurate hole diameters and preventing tool breakage.

The inclusion of the MT2 arbor simplifies the setup process. The arbor is precision-ground to fit snugly into the machine spindle, providing a rigid connection that transmits power efficiently from the motor to the cutting tool. Whether you are performing repair work, fabricating custom parts, or running a production lot, this chuck provides the stability required for high-quality results. Its compact size also maximizes the available vertical clearance on smaller benchtop drill presses, allowing for larger workpieces to be accommodated.

Maintenance of the unit is straightforward; keeping the jaws clean and lightly lubricated will ensure years of trouble-free service. This assembly is a testament to functional design, combining the classic utility of a keyed chuck with the universal compatibility of the Morse Taper system.