The s191 Linear CNC turning and milling centre has proved its worth with six-sided complete machining (of watch components for example) with backlashfree, repeatable precision in the μm range. Because of this positive response and based on the experience gained the s181, a 5-axis turning and milling centre with a retraction unit for the complete machining of complex and high-precision workpieces was developed using the successful s191 model as a technical basis. The focus is on workpieces from the micromechanics sector, which the Starrag Group divides into the application groups orthopaedics, instruments and dental. In contrast to the s191, the new machine, with its HSK-40 tool spindle (30,000 U/min), is designed to machine very small components either individually or from bar (maximum diameter: 32 mm). It also has an approximately 30 % smaller floor space of 3.5 m² – with a comparable performance and an optimised price. Despite the small fl oor space, the tool magazine can accommodate up to 90 tools.

However the new machine, according to Dr. Pham, not only offers the advantage of a “very good price-performance ratio”, but also the possibility of being tailored. “Because of the numerous options, customers can configure their s181 in a way that corresponds exactly to their machining tasks”, says the Development Manager. The new machine has a very modular design and can assimilate numerous options, some of which are still in planning. An example of one of the options that is already available is a second workstation, which will ideally double productivity: Optionally, up to five powered tools can be used to machine a workpiece on the retraction unit while the tool spindle machines on the main spindle. Dr. Pham: “It definitely does not replace the s191 because the s191 can turn, mill and grind significantly larger components with a bar diameter of 65 mm.”