Accupro ECIL381000MSC Taper Drill Chuck Arbor JT1

Product Description

The ACCUPRO ECIL381000MSC is a taper drill chuck arbor designed to connect a Jacobs Taper No. 1 (JT1) drill chuck to a straight-shank tool holder or spindle. The arbor features a 3/8-inch straight shank with a 2.5-inch shank length, allowing secure mounting in standard drill press quills and compatible machine spindles. This type of arbor is a standard interface component used by machinists, tool-and-die technicians, and maintenance mechanics to adapt drill chucks to machine spindles quickly and reliably. Weighing 0.1 pounds, it is a compact, lightweight component suited for bench-top and floor-model drill presses.

This arbor is appropriate for use in light- to medium-duty drilling applications on drill presses where a JT1 chuck mount is required. It is commonly installed during chuck replacement or machine setup in job shops, maintenance facilities, and production environments. The straight shank configuration makes it compatible with drill press spindles and tool holders designed to accept a 3/8-inch straight shank.

Key Features

• JT1 (Jacobs Taper No. 1) mount taper for direct chuck attachment
• 3/8-inch straight shank diameter for standard spindle compatibility
• 2.5-inch shank length provides adequate engagement depth
• Lightweight at 0.1 pounds for easy handling during chuck changes
• Single-piece arbor construction for straightforward installation

Compatibility

Designed for use with Jacobs Taper No. 1 (JT1) drill chucks on drill press spindles or tool holders that accept a 3/8-inch straight shank. No specific machine model compatibility was provided in the product data.

Installation Notes

Installation is typically performed by machinists or maintenance mechanics. Power down and lock out the drill press or machine spindle before seating or removing any chuck arbor. The arbor is pressed or driven into the chuck taper and spindle using a soft mallet or arbor press — never strike hardened surfaces directly with a steel hammer. Removal typically requires a chuck drift through the spindle drift slot; consult the machine manufacturer guidelines before service.