Accupro NP01345400MSC Drill Chuck CAT45 Keyless 1/2 Inch

Product Description

The ACCUPRO NP01345400MSC is a keyless drill chuck designed for CNC machining centers and milling machines using CAT45 tooling. It accepts drill shanks from 1/32 inch (0.0313 inches) up to 1/2 inch (0.5000 inches), covering the most common twist drill and end mill shank sizes used in production environments. The chuck features an integral taper shank mount in the CAT45 standard and uses a ball bearing mechanism for smooth, consistent clamping. Total Indicator Runout (TIR) is held to 0.0016 inches, supporting precision drilling and reaming operations. A spanner wrench is included. Machining professionals and toolroom technicians install this chuck on vertical machining centers and CNC knee mills.

This chuck is suited for production and job-shop environments where rapid tool changes and reliable chuck repeatability are required. The keyless design allows hand-tightening and release without a chuck key, reducing changeover time at the spindle. The CAT45 integral shank mounts directly into any CAT45-compatible spindle without an adapter. The 48 mm sleeve diameter and steel construction make it appropriate for moderate to heavy drilling cycles in ferrous and non-ferrous materials.

Key Features

• Keyless operation for fast tool changes without a chuck key
• Capacity range of 1/32 inch to 1/2 inch covers standard twist drills and small end mills
• CAT45 integral taper shank mounts directly to CAT45 spindles
• Ball bearing mechanism for smooth, even clamping force
• TIR of 0.0016 inches for precision drilling and reaming
• Steel construction for durability in production environments
• Includes spanner wrench

Compatibility

Designed for use with CAT45-spindle machining centers and CNC milling machines. Compatible with any machine tool spindle accepting the CAT45 toolholder standard with an integral taper shank mount.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before mounting or removing any toolholder. Clean the spindle taper and chuck shank thoroughly before seating to ensure proper contact and accurate runout. Verify drawbar engagement and retention force before resuming cutting operations.