United Grinding Studer S41

The United Grinding Studer S41 is a CNC universal cylindrical grinding machine built for high-precision external and internal grinding of medium-to-large workpieces. Manufactured by Studer, a brand within the United Grinding Group, the S41 represents the upper tier of Studer's universal cylindrical grinder lineup, designed for tool rooms, aerospace, and precision component manufacturers that require both flexibility and the highest levels of grinding accuracy on a single platform. The S41 is engineered for complex grinding tasks that combine external, internal, and face grinding in a single setup.

The S41 uses Studer's StuderGuide hydrostatic and hydrodynamic guideway system for all linear axes. This guideway technology eliminates metal-to-metal contact in the slide system, providing vibration damping, smooth motion at all feed rates, and long-term geometric accuracy that is not subject to wear degradation over time. The combination of hydrostatic guideways with a polymer concrete (Granitan) machine base provides a machine structure that actively dampens vibration during grinding — a critical characteristic for achieving Ra surface finish values in the tenths and achieving roundness in the sub-micron range on precision shaft and bore features.

The workhead and tailstock arrangement on the S41 accommodates workpieces up to 650 mm in diameter and supports both between-centers grinding and chuck workholding. The wheelhead can be equipped with multiple grinding spindles in different orientations, including internal grinding spindles, allowing the operator to index between external and internal operations within the same setup cycle. Studer's B-axis CNC wheelhead swivel enables compound-angle grinding without manual adjustment, supporting complex form grinding, taper grinding, and radius grinding in a single program.

Studer's StuderWIN operating environment and the StuderGRIND programming software provide a graphical interface for dressing program creation, grinding cycle setup, and process parameter management. The software is designed specifically for grinding processes, providing grinding-specific cycle structures (plunge grinding, traverse grinding, oscilation cycles) rather than generic CNC programming. The S41 is a strong choice for aerospace, energy sector, and precision tooling applications where universal cylindrical grinding on demanding materials requires both machine capability and an intelligent programming environment.