Accupro SPS1303000MSC Keyless Drill Chuck 1/2 Inch 3MT

Product Description

The ACCUPRO SPS1303000MSC is a keyless drill chuck designed for use with taper shank spindles in machining applications. It accepts drill bit shanks from 1/32 inch up to 1/2 inch (0.0313 to 0.5000 inches) and mounts via an integral 3MT (Morse Taper No. 3) shank. The keyless design allows tool changes without a chuck key, speeding up bit swaps during production or setup. Built from steel with ball bearing construction, this chuck delivers a TIR (Total Indicator Runout) of 0.0016 inches, supporting precise hole location and clean entry. Rated to 10,000 RPM, it suits both low-speed drilling and higher-speed light-duty work.

This chuck is suited for drill presses, milling machines, and similar machine tool spindles that accept a No. 3 Morse Taper. It is a standard fit for shop environments where fast, repeatable tool changes are needed without sacrificing concentricity. The 1.89-inch sleeve diameter and compact taper shank profile keep it compatible with a wide range of production and job-shop machines. Machinists, toolroom technicians, and CNC setup personnel are the primary installers of this component.

Key Features

• Keyless chuck design for fast, tool-free bit changes
• Capacity range: 1/32 inch to 1/2 inch (0.0313 to 0.5000 inches)
• Integral 3MT taper shank mount for direct spindle installation
• Ball bearing construction supports smooth, consistent clamping force
• TIR of 0.0016 inches for accurate hole placement
• Maximum rated speed of 10,000 RPM

Compatibility

Designed as a direct-mount replacement chuck for machine tool spindles with a No. 3 Morse Taper (3MT) socket. Fits drill presses, knee mills, and similar equipment configured for 3MT integral shank tooling.

Installation Notes

Installation is performed by machinists or toolroom technicians familiar with Morse Taper tooling. Power down and lock out the machine spindle completely before installing or removing the chuck. Seat the taper shank firmly by hand and then with a mallet strike if required by the machine manufacturer — never force the shank into a dirty or damaged taper socket. Inspect the spindle bore and chuck taper for nicks, burrs, or contamination before assembly to maintain TIR performance.