Jacobs 9681 Keyless Drill Chuck 3/8 in JT2 Tapered Mount

Product Description

The JACOBS 9681 is a keyless drill chuck designed for use with JT2 tapered mount spindles. It accepts drill bits and round-shank tooling up to 3/8 inch (0.394 inch decimal) in diameter. The keyless design allows for hand-tightening without a key, speeding up bit changes in production or service environments. Internal ball bearings provide smooth, concentric clamping action. The steel chuck body is built for repeated use in industrial and trade applications. Machinists, millwrights, and drill press operators working with JT2-arbor equipment will find this a direct-fit replacement or upgrade.

The 9681 is suited for bench drill presses, sensitive drill presses, and portable drilling equipment that use a JT2 taper arbor. It is appropriate for light-to-medium duty drilling in metal, wood, and plastic. The closed length of 3.5 inches and sleeve diameter of 1.61 inches are typical for compact drill press setups where clearance is a consideration. This chuck is installed by trade machinists and industrial maintenance technicians in both shop and field environments.

Key Features

• Keyless design allows fast, tool-free bit changes
• JT2 tapered mount for secure, self-holding spindle connection
• Accepts tooling from 0 to 3/8 inch (0.394 inch) shank diameter
• Ball bearing construction for smooth, accurate chuck operation
• Steel chuck body for durability in production and maintenance use
• Compact closed length of 3.5 inches suits space-limited setups

Compatibility

Designed for drilling equipment with a JT2 tapered spindle. Verify the spindle taper on the host machine matches JT2 before installation.

Installation Notes

Installation requires the host machine spindle to be powered down and locked out before fitting the chuck. The JT2 taper is a self-holding friction fit; seat the chuck firmly onto the arbor using a brass or wooden mallet strike against a draw bar or by hand-pressing with the spindle locked. Do not use steel hammers directly on the chuck body. Removal typically requires a drift key or arbor press; consult the machine manufacturer's service procedure.