Premium ER Elastic Collet Spring Chuck Set for End Mills

The High-Precision ER Collet Set is a collection of collets and accessories designed for clamping cylindrical shank tools with exceptional accuracy. These collets comply with the DIN ISO 15488-B (ER/ESX) standard , ensuring interchangeability and reliable performance. The set is characterized by its high concentricity and repeatability, typically achieving runout accuracy as low as 2 µm , which contributes to improved machining quality, extended tool life, and reduced vibrations.

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Product Description

Technical Highlights:

Exceptional Accuracy: These collets are manufactured to very tight tolerances. High-precision collet chucks utilizing these collets can achieve runout accuracies of around 0.00012" (3 µm) at 3 times the diameter, which is crucial for fine finishing and maintaining tight tolerances.
Large Clamping Range: ER collets are known for their generous clamping range. For example, ER collets from sizes like ER16, ER20, ER25, ER32, and ER40 typically have a compression range of 1 mm (.040"), reducing the number of collets needed to cover a given tool shank size range.
Rigidity and Stability: The design of the ER collet system, especially when used with precision chucks, provides high rigidity. This dampens vibrations, leads to a smoother machining process, protects the machine spindle, and allows for more aggressive cutting parameters.
Standardization: Adherence to ISO 15488 ensures that these precision collets can be used in a vast ecosystem of standard ER collet chucks and tool holders.

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