Techniks 04220-13.5 ER20 Collet 13.5mm Through Coolant

Product Description

The TECHNIKS 04220-13.5 is an ER20 series collet designed for precision workholding in CNC machining and toolholding applications. It accepts a 13.5mm clamping diameter and delivers a total indicator runout (TIR) of 0.0002 inches (0.005mm), making it suitable for close-tolerance milling, drilling, and tapping operations. The collet features through-coolant capability, allowing cutting fluid to pass directly through the toolholder to the cutting edge. Machinists and CNC operators install this collet into compatible ER20 collet chucks or toolholders on machining centers, lathes, and drilling machines.

This collet fits standard ER20 toolholding systems used across job shops, production machining environments, and maintenance facilities. The 13.5mm bore size accommodates metric shank tooling in that diameter range. Through-coolant support makes it a practical choice for deep-hole drilling and high-speed operations where heat and chip evacuation are critical concerns. It is installed by machinists and CNC setup technicians as part of routine tooling changes or new program setups.

Key Features

• ER20 collet series for use with standard ER20 chucks and toolholders
• 13.5mm clamping diameter for metric shank tooling
• TIR of 0.0002 inches (0.005mm) for precision runout control
• Through-coolant design supports directed coolant flow to the cutting zone
• Compact, industry-standard ER profile for broad system compatibility

Compatibility

Designed as an OEM-style replacement and standard fitment collet for ER20 collet chucks and toolholding systems accepting 13.5mm bore collets.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Before changing collets, de-energize and lock out the machine spindle per facility lockout/tagout procedures. Use the appropriate ER20 collet nut and spanner wrench to seat and torque the collet chuck assembly according to the toolholder manufacturer guidelines. Inspect the collet bore and seating surfaces for chips or debris before installation to protect TIR performance.