In my reports coming from Baselworld I mentioned that Rolex had introduced its proper silicon hairspring called Syloxi in a ladies model. Rolex did this very quietly with no additional information available at that time. Today I can offer you the first official information.
You might know that the silicon hairspring technology is only available to a very small group of Swiss manufacturers. They are Patek Philippe, Rolex, the Swatch Group and Ulysse Nardin. After a legal dispute with the big three Ulysse Nardin now is limited in the use of a common used technology only for Ulysse Nardin; so the privately-owned brand cannot sell or give the silicon-harirspring-technology to others. Just to mention it: This is an interesting point, since I have learned that Ulysse Nardin is for sale and an official M & A was started. I have heard a sum of 600 million Swiss Francs …
Now let´s come back to Rolex.
Rolex was part of the big three paying the essential R & D necessary to finally enable the manufacturing process of high-quality silicon hairsprings that could be used in a mechanical watch. Ulysse Nardin did its own development and by the way was the first company to introduce a silicon hairspring on the market.
Rolex in the trio now is the last company to present its proper silicon hairspring. It is called Siloxy.
If you don´t want to read my entire article, these are the essentials you should know:
Rolex says: “The Syloxi hairspring’s performance is based on five patents. The first concerns the material of which it is made, a silicon and silicon oxide composite (hence the name Syloxi), whose thermo-compensating and non-magnetic properties allow the Syloxi hairspring to maintain its high precision when subjected to temperature fluctuations and magnetic fields. Rolex has also developed a patented geometry that optimizes the isochronism of the hairspring as well as its chronometric regularity. The variable pitch and thickness of the coils, optimized along the whole length of the hairspring, ensures constant development in all positions, compensating for the effects of gravity. Rolex also refined and patented the manner of fixing the ends of the hairspring to the balance staff and the balance bridge, thereby enhancing its flatness and concentricity. A flexible central part allows it to be attached to the balance staff without the need for glue. The hairspring remains perfectly perpendicular, flat and is self-centring. The Syloxi hairspring terminates in a more rigid, reinforced crescent-shaped part that allows a two-point fixation to the traversing balance bridge. These fixation points are located at opposite sides of the balance staff ensuring that the hairspring is perfectly centred, perfectly flat and free of any residual mechanical stress in its active zone. This type of fixation also allowed Rolex to optimize the beat adjustment using the Paraflex shock absorber that features a fluting for this purpose, and which is also the signature of calibres equipped with the Syloxi hairspring.”
You want to read more? Good!
So let me let me show you a first quite exclusive picture of Syloxi and then offer you on page 2 of my report the possibility to read and study the full official release about the Rolex Syloxi hairspring …