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The VALUE COLLECTION 204-2514 is an ER25 series collet designed for use in ER-style collet chucks on CNC machining centers, milling machines, and similar rotating spindle equipment. Sized at 0.2185 inches (7/32 inch) in decimal and fractional inch respectively, this collet maintains a total indicator runout (TIR) of 0.0005 inches, supporting close-tolerance workholding and tool-holding applications. It is a standard single-piece collet suitable for machinists and tool-room technicians working with ER25-compatible tooling systems.
This collet is suited for both production and job-shop environments where ER25 chucks are in regular use. Typical applications include end mill holding, reaming, drilling, and light tapping in ferrous and non-ferrous materials. The 0.2185 inch bore accommodates tooling and workpiece stock at or near that nominal diameter within the collet's standard clamping range.
Designed for use with ER25-compatible collet chucks and toolholders. Confirm chuck series and bore diameter requirements before installation, as ER collet series are not interchangeable across different ER sizes.
Installation is performed by qualified machinists or toolroom technicians. Before inserting or removing the collet, ensure the spindle is fully stopped and the machine is powered down or placed in an e-stop state. Seat the collet properly into the chuck nut before threading onto the chuck body to avoid cross-threading or collet damage. Torque the chuck nut using the appropriate ER25 spanner wrench to the chuck manufacturer's specification.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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