Jacobs 33366 Keyless Drill Chuck JT6 Tapered Mount

Product Description

The JACOBS 33366 is a keyless drill chuck designed for tapered-mount applications using a JT6 arbor interface. It accepts drill bits and tooling from 0.039 to 0.512 inches in capacity, covering the full range needed for most drilling operations in metal, wood, and composite materials. The chuck body is constructed of steel and uses a ball-bearing mechanism for smooth, consistent tightening without a key. At 1.44 pounds and with a closed length of 3.74 inches, it is a robust, shop-grade component suited for installation by machinists, maintenance technicians, and industrial trades professionals.

This chuck is appropriate for use on drill presses, lathes, milling machines, and other equipment that accept a JT6 tapered spindle. It is well suited to both light-production and maintenance environments where a keyless design speeds up bit changes without sacrificing holding force. The 1.73-inch sleeve diameter and ball-bearing construction make it a practical choice for higher-cycle operations where operator efficiency matters.

Key Features

• Keyless design allows fast, tool-free bit changes on compatible machines
• Capacity range of 0.039 to 0.512 inches accommodates a wide variety of drill and tooling sizes
• JT6 tapered mount for secure, repeatable seating on compatible spindles
• Ball-bearing mechanism provides smooth chuck operation and consistent clamping
• Steel chuck body for durability in demanding shop environments
• Sleeve diameter of 1.73 inches for positive grip during tightening and release

Compatibility

Designed as an OEM-style replacement or upgrade chuck for drill presses, lathes, and milling machines fitted with a JT6 tapered spindle. Verify spindle taper designation before installation.

Installation Notes

Installation is performed by machinists or qualified maintenance technicians. Power down and lock out the machine before seating or removing the chuck. The chuck is driven onto the JT6 taper using a soft-face mallet or arbor press - do not use steel hammers directly on the chuck body. Removal requires a proper wedge-type chuck removal tool sized for JT6 to avoid spindle or chuck damage.