Kennametal 1108458 ER16 Collet 3.5 Mm

Product Description

The KENNAMETAL 1108458 is an ER16 collet designed for precision workholding in CNC machining centers, milling machines, and high-speed spindle applications. Built to the ER16 collet series standard, this collet accepts a 3.5 mm shank diameter with a minimum collet capacity of 2.5 mm, giving it a working range suited to small-diameter tooling. Total indicator runout (TIR) is held to 0.0152 mm (0.0006 inches), supporting accurate, repeatable tool positioning. Overall length is 27.51 mm (1.083 inches). Machinists and toolroom technicians specify this collet when tight TIR tolerances are required for drilling, reaming, or end milling operations.

This collet fits ER16 collet chucks used in a wide range of machining setups, including CNC machining centers, manual mills, and router spindles equipped with an ER16 nut and chuck body. The 3.5 mm capacity makes it well suited for small-diameter end mills, drills, and reamers commonly used in precision metalworking and mold-making environments. It is a direct replacement or spare collet for any ER16-compatible toolholding system where the 3.5 mm size range is needed.

Key Features

• ER16 collet series — fits standard ER16 chucks and clamping nuts
• 3.5 mm nominal collet capacity with a 2.5 mm minimum collet capacity
• 0.0152 mm (0.0006 inch) TIR for precise, low-runout tool holding
• 27.51 mm overall length for use in compact ER16 chuck bodies
• Single-piece quantity packaging — suitable for replacement or inventory replenishment

Compatibility

Designed for use with ER16 collet chucks and clamping nuts conforming to the ER16 collet series standard. Compatible with any toolholding system that accepts ER16 collets in the 3.5 mm capacity range.

Installation Notes

ER collets are installed and removed by a qualified machinist or toolroom technician using the appropriate ER16 collet nut and spanner wrench. Always de-energize and lock out the machine spindle before changing collets. Insert the collet into the chuck nut before threading onto the spindle to avoid damage to the collet taper. Inspect the collet bore and chuck taper for chips or debris before assembly, as contamination will increase runout and reduce tool life.