Sumitomo U102771 ER16 Collet 0.078 Inches

Product Description

The SUMITOMO U102771 is an ER16 series collet designed for precision workholding in CNC machining and milling applications. Rated at 0.0005 inches Total Indicated Runout (TIR), this collet holds tight tolerances required for accurate tool positioning in high-speed spindle work. It accepts tooling up to 0.078 inches (1.98mm) in diameter with a minimum collet capacity of 0.059 inches (1.5mm). The compact form factor measures 1.06 inches in length and 0.71 inches in diameter, making it suitable for standard ER16-compatible spindle and toolholder systems. At 0.15 pounds, it is lightweight and easy to handle during tool changes. Machinists and CNC operators working with small-diameter end mills, drills, and reamers rely on this collet for consistent, repeatable clamping force.

This collet is intended for use in ER16-compatible collet chucks installed on CNC machining centers, milling machines, and routing equipment requiring precise small-diameter tool retention. It is suited for production environments where low TIR is critical to surface finish and dimensional accuracy. Typical users include machine shop technicians and CNC programmers working with fine tooling in ferrous and non-ferrous materials.

Key Features

• ER16 collet series with 0.0005 inches TIR for precision tool retention
• Accepts tool diameters from 0.059 inches (1.5mm) up to 0.078 inches (1.98mm)
• Compact dimensions: 1.06 inches length, 0.71 inches width and height
• Lightweight at 0.15 pounds for fast, easy tool changes
• Sold individually, quantity of one per package

Compatibility

Designed as a direct-fit replacement for standard ER16-compatible collet chucks and toolholders accepting the ER16 collet series.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom technicians. Ensure the spindle is fully stopped and the machine is in an e-stop or lockout state before changing collets. Clean the collet seat and nut threads before installation to prevent runout caused by contamination. Do not exceed the rated clamping torque specified by the toolholder manufacturer.