Value Collection 290-1402 Drill Chuck Arbor JT2 4MT

Product Description

The VALUE COLLECTION 290-1402 is a taper drill chuck arbor designed to connect a Jacobs Taper 2 (JT2) drill chuck to a Number 4 Morse Taper (4MT) spindle. This arbor serves as the mechanical interface between the chuck and the machine spindle, transmitting torque and maintaining concentricity during drilling operations. It is a standard shop consumable used by machinists, tool-and-die workers, and maintenance technicians on drill presses, milling machines, and lathes equipped with a 4MT spindle bore. The part weighs 0.175 pounds and ships as a single unit.

This arbor is suited for use in machine shops, production facilities, and maintenance environments where a JT2-mount chuck must be installed on a 4MT spindle. Typical applications include drill press setups and manual milling machine spindles. The Morse Taper shank self-locks into the spindle under cutting load, while the Jacobs Taper mount accepts any standard JT2-compatible drill chuck.

Key Features

• JT2 Jacobs Taper mount accepts standard JT2-compatible drill chucks
• 4MT Morse Taper shank fits machines with a Number 4 Morse Taper spindle
• Self-locking Morse Taper geometry holds under axial cutting loads
• Lightweight at 0.175 pounds for easy handling during chuck changes
• Sold individually as a single unit

Compatibility

Designed for use with JT2-mount drill chucks on machines equipped with a Number 4 Morse Taper spindle bore.

Installation Notes

Installation is performed by machinists or maintenance technicians. Before mounting or removing the arbor, power down and lock out the machine in accordance with applicable OSHA lockout/tagout procedures. To seat the arbor, align the Morse Taper shank with the spindle bore and drive it firmly into place with a soft mallet. To remove, use a drift key through the spindle drift slot to break the taper lock before extracting the arbor.