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Erbicol SA, Viale Pereda 22
6828 Balerna, Switzerland

Ruby & Sapphire

To achieve your goal, you need to be precise!

diamond bladesOur main products are “blanks” (semi-prepared) ruby for the watch industry, white sapphire disks, cylinders and pistons for micro-pumps, plates for scrapers, as well as micro-magnets in rare earth materials for the watch and other industries.

Erbicol is market leader for ruby and sapphire components for the Swiss watch industry, and is recognized by its customer worldwide as a trusted and reliable partner that delivers top quality products and services. Smart management and cost-effective production techniques make us the partner of choice for the machining of extra-hard materials.

The department that deals with the cutting of the synthetic ruby and white sapphires is equipped to cut very small squares with sections up to 0,50 x 0,50 mm with a precision of +/- 0,05 mm and very big diameters such as the disks for watch-glass up to a diameter of 45 mm. We use diamond blades made by ourselves. To fix the pieces we need to cut in big sizes we use our own glue RB884, whereas for small size pieces we use the better known glue RB75.

The department “verifiage” (planar rectification) guarantees flat grinding with parallel sides of all the products we work on such as synthetic Corundum (ruby and sapphires), all types of ceramics and hard metal. The tolerance margins we guarantee are normally +/- 0,01 mm, but in some particular cases we are able planarto go down to +/- 0,005 mm.

One of our strongest points is the centerless grinding of extra hard materials with a diameter from 0,10 mm up to 40 mm with a tolerance margin that can reach a precision of up to +/- 0,001 mm. Our “blanks” for micro magnets, for end stones in ruby, sapphire pistons, for cylinders in ruby for capillaries, for sapphire cylinders for wire guides and other products, are appreciated by our customers for their quality and regularity.

The machines we use allow us to work both with a static shaping process and with a continuous flow technique according to the size required. Our working tools are dimaond grinding wheel of different types and grain according to the piece and to the work to carry out, and the roughness of the surfaces are comprised between Ra 0,2 mü and 0,5 mü.