Iscar 4504119 Milling Chuck Collet 0.9843 in Id

Product Description

The ISCAR 4504119 is a milling chuck collet designed for secure tool holding in CNC milling applications. With an inside diameter of 0.9843 inches and an outside diameter of 1.2598 inches, this collet provides a precision bore-to-shank interface that minimizes runout and maintains concentricity under load. The overall length of 2.8346 inches gives machinists adequate gripping depth for stable cutting tool retention. Weighing 0.427 pounds, the 4504119 is a compact, solid-construction collet suited for high-speed milling operations where tool stability and repeatability are critical. It does not include through-coolant capability.

This collet is intended for use in milling chuck toolholding systems commonly found in production machining environments, job shops, and precision fabrication facilities. It is installed by machinists and CNC setup technicians working with vertical and horizontal milling machines or machining centers that accept the corresponding milling chuck body. The 0.9843-inch bore accommodates tool shanks at that diameter, making it applicable to a range of end mills and cutting tools with matching shank sizes.

Key Features

• Inside diameter of 0.9843 inches for precise tool shank engagement
• Outside diameter of 1.2598 inches for compatibility with matching milling chuck bodies
• Overall length of 2.8346 inches provides secure gripping depth
• No through-coolant passage — suitable for dry or flood-coolant external setups
• Lightweight at 0.427 pounds for easy handling during tool changes

Compatibility

Designed as an OEM-style replacement or direct-fit collet for milling chuck toolholding systems that accept a 1.2598-inch outside diameter collet with a 0.9843-inch bore.

Installation Notes

Installation and removal should be performed by a qualified machinist or CNC setup technician with the machine spindle fully stopped and all motion axes locked. Use the appropriate spanner wrench or collet nut tool specified for the milling chuck body — do not use pipe wrenches or improvised tools that can damage the collet seating surface. Inspect the collet bore and chuck body taper for chips, burrs, or wear before seating, as contamination directly affects runout. Follow the machine tool manufacturer torque guidelines for the collet nut to avoid over-clamping or under-clamping the tool shank.