Techniks 04220-10 ER20 Collet 10mm Through Coolant

Product Description

The TECHNIKS 04220-10 is an ER20 series collet designed for precision workholding in CNC machining and toolholding applications. Built to accommodate a 10mm collet size, this collet delivers a total indicator runout (TIR) of 0.0050mm, making it suitable for close-tolerance milling, drilling, and reaming operations. The through-coolant design allows coolant delivery directly to the cutting zone, extending tool life and improving chip evacuation. Machinists and CNC technicians install this collet into compatible ER20 collet chucks as part of standard spindle tooling setups.

This ER20 collet is used in both manual and CNC machine tool environments where consistent grip force and minimal runout are required. Typical applications include vertical machining centers, horizontal machining centers, and toolroom mills using ER20-compatible chuck bodies. The through-coolant feature makes it well suited for deep-hole drilling and high-speed operations where flood coolant alone is insufficient to reach the cutting edge.

Key Features

• ER20 collet series for use with standard ER20 chuck bodies
• 10mm collet size for precise tool clamping
• TIR of 0.0050mm for high-accuracy machining operations
• Through-coolant design channels coolant directly to the cutting zone
• Compact form factor suited for high-speed spindle applications

Compatibility

Designed as an OEM-style replacement and standard fitment collet for ER20-compatible collet chuck bodies used in CNC and manual machine tool applications.

Installation Notes

Installation is performed by qualified machinists or CNC technicians. Before inserting the collet, power down and lock out the machine spindle per standard lockout/tagout procedures. Seat the collet fully into the ER20 chuck nut before engaging the chuck body to avoid damage to the collet taper. When using through-coolant, verify that the machine coolant system pressure is compatible with the chuck and collet assembly before operation.