PRODUCT SHOWCASE: Schunk Expands its line of Micro-Machining Products


Tribos polygonal clamping technology has been used in high-precision micro-machining for many years by medical and dental technology, watchmaking, and jewelry, as well as mold-making and optical engineering companies. Due to the high demand of the patented toolholding system, Schunk has further expanded the line of precision toolholders.

The Schunk Tribos-Mini, designed for micro applications, is available for high-speed spindle interface HSK-E 20. Compared to conventional steep-angle taper interfaces, the HSK-E 20 ensures exact contact of the toolholder, which allows outstanding change and positioning accuracy. In addition, the close tolerances of the tapered seat result in maximum precision and superior running smoothness at high speeds.

Schunk has made improvements in other interfaces as well: the Tribos-Mini and Tribos-RM series with the interfaces HSK-E 25 and HSK-E 32, starting with clamping diameters of 0.5 mm, are now optionally available in fine-balanced versions with a balancing grade of G 0.3 at 60,000 rpm. Tribos can also be used for applications with high requirements for dimensional stability and surface quality.

For multi-axis machining centers, Schunk has modified the robust Tribos-RM with an extended L1 dimension of 78 mm. The extra length can be used for many different tasks: In addition to direct clamping, it is suitable for clamping of smaller shank diameters. For machining of hard-to-access areas, the toolholder can also be combined with the standardized Tribos-SVL Mini tool extension. The universal five-axis expert is available for the interfaces HSK-A 32, HSK-A 40, HSK-E 32, and HSK-E 40. Its shank diameter is 12 mm for all of these interfaces.

Tribos-Mini is now standardized with diameters of 1 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 6 mm, and 1/8 inch. Tribos-RM with diameters of 3 mm, 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, and 1/8 inch. In addition to the existing interfaces HSK-A 25, -A 32, -A 40, -E 25, -E 32, and -E 40, both holders are now available for HSK-E 20 and for BT 30.