Accupro NP01340400MSC CAT40 Keyless Drill Chuck 1/2 in

Product Description

The ACCUPRO NP01340400MSC is a keyless drill chuck designed for CNC machining centers and milling applications requiring a CAT40 integral shank mount. It accepts drill shanks from 1/32 inch (0.0313 inch) up to 1/2 inch (0.5000 inch), making it suitable for a wide range of drilling, reaming, and light boring operations. The chuck features a ball bearing design and a steel construction, with a sleeve diameter of 48 mm and a total indicated runout (TIR) of 0.0016 inch. A spanner wrench is included. The unit weighs 4.1 pounds and is intended for installation by qualified machining or toolroom personnel.

This chuck is used in vertical and horizontal machining centers equipped with CAT40 taper spindles. It is well-suited for production environments where frequent tool changes are required, since the keyless design allows hand-tightening without a chuck key. Closed length is 126 mm and open length is 115 mm, which affects Z-axis clearance planning in close-tolerance setups. Typical applications include drilling operations in ferrous and non-ferrous materials across job shop and production floor environments.

Key Features

• Keyless design allows rapid tool changes without a chuck key
• CAT40 integral shank mount for direct spindle engagement
• Capacity range of 1/32 inch to 1/2 inch covers standard drill shank sizes
• Ball bearing construction supports smooth chuck operation and consistent grip
• TIR of 0.0016 inch for accurate, repeatable hole positioning
• Includes spanner wrench for chuck body adjustment

Compatibility

Designed for use with CAT40 taper spindle machining centers accepting integral shank drill chucks in the 1/32 inch to 1/2 inch capacity range.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with CAT40 toolholding systems. Power down and lock out the spindle drive before mounting or removing the chuck. Ensure the spindle taper and chuck shank are clean and free of chips or oil film before seating to maintain runout performance. Verify Z-axis clearance against closed length before initiating a cycle.