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The TECHNIKS 04548-1-1/4 is an ER50 series collet designed for use in ER50-compatible collet chucks on CNC machining centers, milling machines, and other rotating spindle equipment. It provides secure tool clamping across a defined bore range, maintaining concentricity and grip force during cutting operations. With an overall length of 2.362 inches and an outer diameter of 2.05 inches, this collet fits standard ER50 chuck bodies. At 0.5 pounds, it is a solid, precisely machined component intended for installation and setup by machinists and toolroom technicians.
ER50 collets are commonly used in production and job-shop environments where larger-shank tooling is required. This collet is suited for high-speed milling, drilling, reaming, and tapping applications where consistent tool holdout and runout control matter. It is typically installed into an ER50 collet chuck mounted in a CAT, BT, HSK, or straight-shank spindle interface, depending on the machine tool configuration.
Designed as an OEM-style replacement and standard fitment collet for ER50 series collet chuck bodies used in CNC and manual machine tool spindle applications.
ER50 collets are installed and removed by machinists using an ER50 collet nut and appropriate spanner or torque wrench. Always de-energize and lock out the machine spindle before changing tooling. Seat the collet fully into the chuck body before threading the collet nut to avoid cross-threading or uneven clamping. Follow the machine tool manufacturer and shop safety guidelines for torque procedures and spindle speeds.
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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