Techniks 04232-04 ER32 Collet 4mm Through Coolant

Product Description

The TECHNIKS 04232-04 is an ER32 series collet designed for use in ER32-compatible collet chucks on CNC machining centers, milling machines, and similar rotating spindle equipment. This collet accepts a 4mm tool shank and features through-coolant capability, allowing cutting fluid to pass directly through the collet to the tool tip. Total Indicator Runout (TIR) is rated at 0.005mm, making it suitable for precision work where tool concentricity directly affects surface finish and tool life. Machinists and CNC operators install this collet as a standard workholding component during tooling setup.

This collet is used in production machining and job-shop environments wherever ER32 toolholding systems are in place. It is appropriate for drilling, reaming, end milling, and tapping operations using 4mm shank tooling. The through-coolant design is particularly useful in deep-hole drilling and high-speed milling applications where direct coolant delivery to the cutting zone improves chip evacuation and tool temperature management. Overall length is 2 inches and overall diameter is 1 inch.

Key Features

• ER32 collet series - fits standard ER32 collet chucks
• 4mm collet size for precise tool shank clamping
• Through-coolant design delivers fluid directly to the cutting tool tip
• TIR of 0.005mm for high-precision concentricity
• 2 inch overall length and 1 inch overall diameter
• Lightweight at 0.3 pounds - minimal spindle load contribution

Compatibility

Designed as a direct-fit replacement for standard ER32 collet chucks accepting 4mm tooling with through-coolant capability.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before inserting or removing collets. Use a proper ER32 collet nut and torque wrench sized for ER32 nuts - do not over-tighten by hand or with improvised tools, as this can damage the collet taper or chuck bore. Inspect the collet bore and chuck taper for chips or debris before seating the collet.