Value Collection 204-1108 ER11 Collet 0.125 in

Product Description

The VALUE COLLECTION 204-1108 is an ER11 series collet designed for use in CNC machining centers, milling machines, and high-speed spindle applications. It holds a 0.125 inch (1/8 inch) shank diameter tool with a total indicator runout (TIR) of 0.0005 inches, providing the concentricity required for precise cutting, drilling, and engraving operations. Machinists and toolroom technicians rely on ER collets as the standard workholding solution for rotating spindle tooling. At 0.33 pounds, this collet is a lightweight, direct-fit component suited for both production and job-shop environments.

This collet is intended for use in ER11-compatible collet chucks and spindle noses found on benchtop CNC routers, micro-milling machines, and precision grinding spindles. The ER11 series is one of the most widely used collet standards in light-duty and precision machining. It is appropriate for residential shop use, tool and die work, and light production runs where consistent toolholding accuracy is critical. Machinists installing or replacing collets in ER11 chucks will find this a direct-fit replacement.

Key Features

• ER11 collet series — compatible with standard ER11 collet chucks
• 0.125 inch (1/8 inch) tool shank capacity
• 0.0005 inch TIR for precise concentricity and reduced runout
• Lightweight at 0.33 pounds for easy handling and storage
• UNSPSC Code 27112800 — classified under cutting tool accessories

Compatibility

Designed as a direct-fit replacement for ER11-series collet chucks accepting a 0.125 inch shank diameter tool. Consult your spindle or chuck manufacturer specifications to confirm ER11 collet compatibility before installation.

Installation Notes

ER collets are installed and removed by a machinist or toolroom technician using the appropriate ER11 collet nut and spanner wrench. Power down and lock out the spindle drive before servicing any toolholding component. Never seat a collet in a chuck without a tool inserted, as this can damage the collet bore. Inspect the collet and chuck taper for chips or debris before seating to maintain concentricity.