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The TECHNIKS 04209-11(SET) is an 11-piece ER16 collet set designed for precision workholding in CNC machining and manual milling applications. Built to the ER collet system standard, this set covers a range of tool shank sizes up to 3/8 inches in capacity, with size increments of 1/32 inches to provide close coverage across common tooling diameters. The ER16 series is a widely adopted collet format known for its reliable clamping force and runout accuracy, making it a practical choice for machinists and tool room technicians who need a versatile, ready-to-use collet assortment.
This collet set is suited for use in ER16-compatible collet chucks mounted in machining centers, CNC mills, manual knee mills, and drill presses. The 11-piece configuration covers the full 1/32-inch increment range up to 3/8 inches, allowing a single set to accommodate a broad selection of end mills, drill bits, reamers, and other round-shank cutting tools. It is intended for professional machine shop use in production and job shop environments where consistent tool retention is required.
Designed for use with ER16-series collet chuck holders conforming to the ER collet system standard. Fits any ER16-compatible chuck regardless of machine make or model.
Installation should be performed by a qualified machinist or toolroom technician familiar with ER collet systems. Ensure the spindle is fully stopped and the machine is powered down before changing collets. Seat the collet fully into the collet nut before threading onto the chuck body to avoid cross-threading or collet damage. Inspect collet bores and chuck tapers for chips or debris prior to assembly to maintain clamping accuracy.
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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