Accupro NP01640400MSC Keyless Drill Chuck CAT40 5/8 Inch

Product Description

The ACCUPRO NP01640400MSC is a keyless drill chuck designed for CNC machining centers and milling machines equipped with CAT40 spindles. It accepts drill shanks from 1/8 inch to 5/8 inch (0.6250 inch maximum), making it suitable for a wide range of drilling operations without requiring a key for tightening or releasing. The chuck uses an integral shank mount with a taper shank design, providing a rigid, direct connection to the spindle. A ball bearing mechanism supports smooth operation and consistent clamping force. Total indicated runout (TIR) is rated at 0.0016 inch, supporting accurate hole placement across production and toolroom environments.

This chuck is used in production machining, toolroom work, and job shop environments where CAT40 tooling is the standard. The keyless design speeds up tool changes on vertical machining centers and drill presses with CAT40 spindle interfaces. The 55 mm sleeve diameter and taper shank configuration are consistent with standard CAT40 tooling systems found in industrial machine shops. A spanner wrench is included for sleeve adjustment. Installation and tool changes are typically performed by machinists or CNC operators following standard lockout and tooling change procedures.

Key Features

• Keyless operation for fast tool changes without a chuck key
• Capacity range of 1/8 inch to 5/8 inch (0.6250 inch) accommodates a broad selection of drill shanks
• CAT40 integral taper shank mount for direct spindle connection
• TIR of 0.0016 inch for consistent drilling accuracy
• Ball bearing design supports smooth clamping and release
• Includes spanner wrench for sleeve adjustment

Compatibility

Designed for use with CAT40 spindle interfaces on CNC vertical machining centers and drill presses that accept CAT40 integral shank tooling.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Always power down and lock out the machine spindle before mounting or removing tooling. Follow the machine tool manufacturer guidelines for CAT40 tool retention torque and draw bar engagement. Inspect the taper shank and spindle bore for debris or damage before seating the chuck.