Ruemlang, Switzerland – July 11, 2024 – BIG KAISER, a leader in premium high-precision tooling systems and solutions for the metalworking industries, announces the HSK-EZ15 MEGA Micro Chuck. This latest version of the MEGA Micro Chuck collet is specifically designed for applications using smaller workpieces such as jewelry, watches, and micromachining.

The HSK-EZ15 MEGA Micro Chuck is designed according to the HSK-EZ15 norm, a new interface used by the latest machine tools, which replaces the previous ATC-E15 norm. HSK-EZ15 sets a new standard for compactness and precision by enabling the miniaturisation of spindles and by meeting the demands for precision, performance and reliability of the microtechnology market.

The new collet is available in three variations with outer diameters of 10mm, 12mm, and 14mm. Each is perfectly suited for high-speed machining from 0.45mm to 6.05mm shaft size, maintaining a perfect runout of under 3µm at four times D. These collet holders can be used at speeds up to 80,000 rpm.

For watchmaking, the MEGA Micro Chuck offers a compact, easy-to-use solution that allows quick retooling for new parts. Its excellent guaranteed runout accuracy (under 3µm) meets the exacting standards of watchmakers. Additionally, it provides high positioning accuracy, excellent repeatability, and noiseless operation.

MEGA Micro Chuck is a collet chuck with a slim body and nut, designed with the highest rigidity for high-speed machining and reduced interference. It has a notch free nut for high-speed applications, which prevents vibration and noise, and offers superior balance and concentricity. This nut design eliminates whistling noise and coolant splattering and assures increased strength of the nut itself.

“HSK-EZ15 is an innovative way of integrating functions into small spindles that were previously only possible with much larger spindles, such as presetting outside the machine to save time and increase productivity. BIG KAISER was the first company to believe in this project and to develop an industrial tool holder that would allow these machines to be sold in series,” said Giampaolo Roccatello, Chief Sales & Marketing Officer for Europe at BIG KAISER. “Using a smaller spindle with its reduced mass and physical dimensions enables a sustained reduction in energy consumption.”

The HSK-EZ15 MEGA Micro Chuck is available now.