Techniks 04220-05 ER20 Collet 5mm Through Coolant

Product Description

The TECHNIKS 04220-05 is an ER20 series collet designed for precision workholding in CNC machining and milling applications. With a collet size of 5.00mm and a total indicated runout (TIR) of 0.0002 inches (0.0050mm), this collet delivers the tight tolerances required in high-speed and close-tolerance cutting operations. Through coolant capability allows cutting fluid to pass directly through the collet to the tool, improving chip evacuation and extending tool life. It is installed by machinists and CNC setup technicians in production and job-shop environments.

The 04220-05 is suited for use in ER20-compatible toolholders and collet chucks found on vertical machining centers, CNC mills, and multi-axis lathes. The ER20 collet series is one of the most widely adopted standards in precision toolholding, making this collet a common replacement or additional collet for shops maintaining a range of tool diameters. It fits any ER20 collet chuck conforming to the ER20 standard and is appropriate for both roughing and finish passes where runout control matters.

Key Features

• ER20 collet series for broad compatibility with ER20-standard chucks
• 5.00mm collet size for precise clamping of 5mm shank tooling
• TIR of 0.0002 inches (0.0050mm) for tight runout control
• Through coolant design routes cutting fluid directly to the cutting zone
• Single-piece packaging suitable for individual replacement or fleet stocking

Compatibility

Designed as an OEM-style replacement or supplemental collet for use with ER20-standard collet chucks and toolholders in CNC milling and turning applications.

Installation Notes

ER collets are installed and removed by qualified machinists or CNC setup personnel. Power down and lock out the spindle before handling any toolholding components. Use the appropriate ER20 collet nut and a calibrated torque wrench where manufacturer chuck specifications call for it. Inspect the collet bore and chuck taper for contamination or wear before seating the collet, as debris will directly affect TIR performance.