Parlec ER20-0406 ER20 Collet 0.406 Inch Bore

Product Description

The PARLEC ER20-0406 is an ER20-series precision collet designed to hold cutting tools and workpieces in CNC machining centers, milling machines, and similar rotating spindle equipment. It accepts a nominal bore diameter of 0.406 inches with a minimum collet capacity of 0.3666 inches, giving machinists a defined clamping range for secure tool retention. The overall length is 1.24 inches and the overall diameter is 0.827 inches. This collet is installed and serviced by machinists, toolroom technicians, and CNC setup personnel working in production or job-shop environments.

The ER20-0406 is suited for use in ER20-compatible collet chucks found on CNC mills, machining centers, drill presses, and manual milling machines. The ER20 collet series is one of the most widely used standards in precision toolholding, making this collet a common item in shops running metric or imperial tooling within the ER20 size range. It is appropriate for light to medium-duty cutting operations where consistent runout and repeatable tool positioning are required.

Key Features

• ER20 collet series for use with standard ER20 collet chucks
• 0.406 inch nominal bore diameter with a minimum capacity of 0.3666 inches
• Overall length of 1.24 inches for compact spindle stack-up
• Overall diameter of 0.827 inches
• Lightweight at 0.1 pounds for easy handling during tool changes

Compatibility

Designed as an OEM-style replacement or standard fitment collet for use with ER20-compatible collet chucks and toolholding systems.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before inserting or removing a collet, power down and lock out the spindle drive per applicable machine safety procedures. Seat the collet fully into the collet nut before threading onto the chuck body, and use the appropriate ER20 collet wrench and chuck wrench to achieve proper clamping torque. Inspect the collet bore and chuck taper for chips or contamination before each use to maintain runout accuracy.