Techniks 04208-3/32 ER8 Collet 0.512in Oal 3/32 Bore

Product Description

The TECHNIKS 04208-3/32 is an ER8 series collet designed for precision tool holding in CNC machining and manual milling applications. It accepts a 3/32 inch bore and delivers a total indicator runout (TIR) of 0.0002 inches, making it suitable for close-tolerance work where concentricity directly affects surface finish and tool life. With an overall length of 0.512 inches, this collet fits standard ER8 collet chucks used across a wide range of spindle configurations. Machinists and toolroom technicians install this collet as part of a collet chuck assembly to secure cutting tools, drills, or round-shank tooling during machining operations.

This collet is suited for light-duty precision machining environments including CNC milling, engraving, and high-speed drilling where a small-bore ER8 collet is required. The compact ER8 series is commonly found on smaller machining centers, engraving spindles, and bench-top CNC routers. The 3/32 inch bore size targets small-diameter tooling typical in precision work, mold work, and detailed machining tasks.

Key Features

• ER8 collet series for compatibility with standard ER8 collet chucks
• 3/32 inch bore for small-diameter tool shank retention
• 0.0002 inch TIR for high concentricity and precision runout control
• 0.512 inch overall length fits compact ER8 chuck bodies
• Lightweight at 0.5 pounds, suited for high-speed spindle applications

Compatibility

Designed as an OEM-style replacement or standard fitment collet for ER8 series collet chucks requiring a 3/32 inch bore capacity.

Installation Notes

Installation is performed by a machinist or toolroom technician. Always power down and lock out the spindle before inserting or removing collets. Seat the collet fully into the collet nut before threading onto the chuck body to avoid cross-threading or collet damage. Inspect the collet bore and chuck taper for debris or wear before use, as contamination directly affects runout performance.