Techniks 04208-01.0 ER8 Collet 1mm Through Coolant

Product Description

The TECHNIKS 04208-01.0 is an ER8 series collet designed for precision workholding in CNC machining and toolholding applications. With a 1.00mm collet size and a true indicated runout (TIR) of 0.0050mm, this collet delivers the tight tolerances required for small-diameter tooling. Through-coolant capability allows cutting fluid to reach the tool tip directly, supporting efficient chip evacuation and heat management during high-speed operations. Machinists and CNC operators working with small-bore ER8 chucks will find this collet suited to precision milling, drilling, and engraving work.

This collet is used in machine shop environments wherever an ER8 collet chuck is installed. It is suited for light-duty CNC mills, engravers, and multi-axis machining centers that require accurate, repeatable tool clamping at small diameters. The 1.00mm bore accommodates very fine cutting tools, making it common in die-making, mold work, and micro-machining applications where runout control is critical.

Key Features

• ER8 collet series for use with standard ER8 collet chucks
• 1.00mm collet size accommodates fine, small-diameter tooling
• TIR of 0.0050mm for high-precision runout control
• Through-coolant design channels fluid directly to the cutting zone
• Lightweight at 0.2 pounds for easy handling and quick changeover

Compatibility

Designed as an OEM-style replacement or standard fitment collet for ER8 series collet chucks used in CNC milling, drilling, and engraving machine spindles.

Installation Notes

ER8 collets are installed and removed by a qualified machinist using the appropriate ER8 collet nut and spanner wrench. The spindle or collet chuck must be fully stopped and the machine powered down before changing collets. Ensure the collet bore, chuck taper, and collet nut are clean and free of chips or debris before seating the collet. Do not exceed the collet size range when clamping tooling.