CERAMIC ENDSTONE FOR THE TOURBILLON CAGE
This reflects a technical and long-term view towards the elimination of wear phenomena, resulting in improved technical tribology.
SPLINE SCREWS IN GRADE 5 TITANIUM FOR THE BRIDGES
This permits better control of the torque applied to the screws during assembly. These screws are therefore unaffected by physical manipulation during assembly or disassembly and age well.
BARREL PAWL WITH PROGRESSIVE RECOIL
This device permits an appreciable winding gain (circa 20%), especially during the start of winding. It is also helpful in the distribution of the mainspring’s internal tension.
WINDING BARREL TEETH AND THIRD-WHEEL PINION WITH CENTRAL INVOLUTE PROFILE
The central involute profile of the winding barrel teeth and pinion provides an optimal pressure angle of 20°. This promotes effective rotary motion and allows for compensation of possible variations in the engagement of the going train, thus insuring excellent torque transmission with a distinct improvement in performance.
- Movement dimensions: 31.20 x 29.45 mm • Thickness: 4.65 mm
- Tourbillon diameter: 12.30 mm
- Balance wheel diameter: 10.00 mm
- Jewels: 23, set in white gold chatons
- Balance: Glucydur, 2 arms, 4 setting screws,
moment of inertia 10 mg•cm2, angle of lift 53° • Frequency: 21,600 vph (3 Hz)
- Balance spring: ELINVAR by Nivarox®
- Shock protection: KIF ELASTOR KE 160 B28
- Barrel shaft: in nickel-free chronifer
(DIN x 46 Cr 13 + S)
with the following characteristics:
stainless - antimagnetic - suitable for tempering.
- Anglage and polishing by hand
- Locking sections hand polished
- Sapphire blasted milled sections
- Lapped and polished contact points • Burnished pivots
- Sapphire blasted surfaces
- Anglage and polishing by hand • Burnished sections
- Satin finished surfaces
- Concave chamfering with a diamond tool
- Circular finished faces
- Rhodium-plating (before cutting the teeth)
- Minimal corrections applied to the wheels in order to preserve geometry and performance.
49.80 mm x 38.00 mm x 8.70 mm
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