Accupro CY01916040MSC Keyed Drill Chuck JT3 Tapered Mount

Product Description

The ACCUPRO CY01916040MSC is a keyed drill chuck designed for use on drilling machines, lathes, and drill presses that accept a JT3 tapered mount. It accepts round-shank tooling from 13/64 inch (0.1969 inches) up to 3/4 inch (0.7500 inches) in diameter. The chuck uses a plain bearing design and is constructed from steel for durability under repeated clamping loads. A K4 chuck key is included. The sleeve diameter measures 65 millimeters (approximately 2.56 inches), the closed length is approximately 4.57 inches, and the open length is approximately 3.35 inches. Machinists, tool room technicians, and industrial maintenance professionals are the typical installers of this component.

This drill chuck is suited for general-purpose drilling operations in machine shop, maintenance, and production environments. The JT3 taper mount is a common standard found on bench drill presses and floor-standing drilling machines across a range of industrial and commercial applications. The chuck is equipped with a Positive Drive Slot, which engages the spindle taper securely and resists loosening during drilling. It is appropriate for use with high-speed steel twist drills, step drills, and similar round-shank tooling within its stated capacity range.

Key Features

• Capacity range from 13/64 inch to 3/4 inch accommodates a wide variety of round-shank tooling
• JT3 tapered mount for secure, repeatable spindle engagement
• Positive Drive Slot helps prevent chuck from backing off the spindle taper under load
• Keyed operation with included K4 chuck key for positive tool clamping
• Plain bearing design suited for general-purpose drilling applications
• Steel chuck body for long service life under production conditions

Compatibility

Designed for use on drilling machines and drill presses equipped with a JT3 (Jacobs Taper No. 3) spindle taper. No specific compatible machine model numbers were provided in the product data.

Installation Notes

Installation is performed by machinists or maintenance technicians. Before mounting or removing any drill chuck, ensure the machine is powered down, locked out, and the spindle has come to a complete stop per applicable lockout/tagout procedures. The chuck taper should be cleaned and free of burrs, oil, and debris before seating to ensure full contact. Drive the chuck onto the JT3 spindle taper with a soft-faced mallet; removal requires a taper drift inserted through the spindle drift slot.