Royal Ultra-Precision ER Collets

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Royal Ultra-Precision ER Collets: The Standard for CNC Accuracy

In high-speed machining, runout is the primary cause of premature tool wear and poor surface finishes. While generic collets often vary significantly in quality, Royal Ultra-Precision ER Collets are guaranteed to provide a TIR of 0.0002" (6 microns) or better. This extreme accuracy ensures that your cutting tools run perfectly concentric, providing stronger grip force and significantly longer tool life.

Full Surface Contact Technology

Unlike other brands that offer limited sizes, Royal ER collets are ground to exact inch and metric sizes. This precision manufacturing enables Full Surface Contact between the collet and the cutting tool shank. By matching the collet perfectly to your tool diameter, you achieve less vibration, better part geometry, and the ability to push your machine to its full potential without compromising on quality.

Standard vs. Sealed ER Collets

Depending on your shop's needs, we offer both standard and high-pressure sealed models. Our Sealed ER Collets feature a unique mechanical design that blocks coolant path without the use of rubber or silicone plugs, which can wear out over time. These are high-pressure approved up to 1400 psi, ensuring 100% coolant delivery directly to the tip of the cutting tool for superior chip evacuation and cooling.

Complete Your Set and Save

Whether you need a replacement for a single operation or are outfitting a new machine with a full ER Collet Set, we provide the inventory and technical support you need. Professional shops prefer Royal for their durability and consistency. Most orders of collet sets automatically qualify for our Free Shipping offer, ensuring you get the best value alongside the highest performance in the industry.