Accupro CKS1007020MSC Keyless Drill Chuck 3/8 in JT33

Product Description

The ACCUPRO CKS1007020MSC is a keyless drill chuck designed for use with tapered-mount drill presses, portable drills, and similar rotary tool spindles. It accepts drill bit shanks from 1/32 inch up to 3/8 inch, making it suitable for a wide range of twist drills, step bits, and small-shank tooling. The JT33 tapered mount provides a secure spindle fit without the need for threaded adapters. Internal ball bearing construction supports smooth, consistent jaw actuation and helps maintain concentricity under repeated use. The sleeve diameter measures 40 millimeters. At 1.23 pounds, this chuck is a straightforward drop-in replacement for worn or damaged keyless chucks in shop and field service environments. Machinists, maintenance technicians, and tool-room personnel are the primary installers.

This chuck is suited for light-duty to medium-duty drilling applications in steel, aluminum, wood, and plastics. The JT33 taper is common on benchtop drill presses, handheld corded drills, and some lathes used for secondary operations. The keyless design allows bit changes by hand without a chuck key, reducing setup time during production work or service calls. It is appropriate for both shop use and field maintenance where a compact, reliable chuck is required.

Key Features

• Keyless jaw actuation — no chuck key required for bit changes
• Capacity range: 1/32 inch minimum to 3/8 inch maximum
• JT33 tapered mount for secure, tool-free spindle installation
• Ball bearing internal construction for smooth jaw movement and concentricity
• Steel chuck body for durability in production and service environments
• 40 millimeter sleeve diameter

Compatibility

Designed as a direct replacement for JT33 tapered-mount keyless drill chucks on benchtop drill presses, handheld drills, and similar rotary spindle equipment that accept a 3/8 inch maximum shank capacity.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with tapered spindle fits. Disconnect and lock out all power to the machine before removing the existing chuck. Seat the JT33 taper firmly by hand, then use a soft mallet or drawbar method appropriate to the host machine — consult the machine manufacturer guidelines before driving the taper. Inspect the spindle taper bore for wear or damage before seating the replacement chuck.