Starrag Bumotec s230

The Starrag Bumotec s230 is a specialized faceting and diamond finishing center designed for watch dials, precision indices, and decorative components in the luxury goods sector. Unlike the general-purpose s191 family, the s230 is purpose-built for faceting, beveling, diamond polishing, and precision engraving.

The s230 features X/Y/Z axis travels of 150 x 150 x 123 mm (5.9 x 5.9 x 4.8 in) with a U-axis stroke of 375 mm and continuous C-axis rotation. The dual-spindle architecture includes a horizontal spindle delivering 1 kW at up to 4,000 RPM with ISO 20 tooling for operations up to 300 mm diameter, and a vertical spindle delivering 2 kW at up to 45,000 RPM with ISO 10 tooling for micro-finishing down to 7 mm diameter features.

Precision is specified at ±0.010 mm, appropriate for decorative finishing where visual quality takes priority. The 8-position tool holder magazine with automatic pneumatic loading provides fast tool changes. An integrated optical vision system (640x480 pixel resolution) enables automatic part alignment and inspection.

The s230 runs on a Siemens 840DI-SL control and uses microlubification for environmentally friendly machining. New machines typically price between $250,000 and $400,000. The s230 occupies a unique niche serving primarily the Swiss and European luxury watchmaking industry.