CMM.30
-3/+7 SECONDS ACCURACY
Optimised mechanical accuracy with near chronometer-certified performance.
105 HOURS POWER RESERVE
Increased power reserve thanks to a large barrel allowing optimized winding.
HIGH SHOCK RESISTANCE
Caliber impervious to shocks, vibrations, and acceleration up to 5,000 Gs in all directions.
FRENCH MANUFACTURE CALIBER
Caliber designed and developed by Olivier Mory. Micro-components (bridges and mainplates) manufactured directly in our YEMA workshops in Morteau, including assemblies, adjustments and checks.
MOVEMENT
Ø 31mm mechanical hand-wound tourbillon, free-sprung balance wheel
COMPLICATIONS
Tidal cycles
(Lunar time)
FREQUENCY
3Hz (21 600 A/h)
POWER RESERVE
105 Hours
ACCURACY
-3 / +7 seconds
(Adjusted in 6 positions)
MAGNETIC RESISTANCE
2 000 Gauss
SHOCK RESISTANCE
5 000 G
REGULATING ORGANS
Tourbillon cage with free-sprung balance wheel
ESCAPEMENT
LiGa anchor and escapement wheel
JEWELS
19
COMPONENTS
130
DECORATION
ALD (Atomic Layer Deposition)
OWN DESIGN LOCALLY MANUFACTURED
The Calibre Manufacture Morteau 30 (CMM.30) tourbillon unique’s design offers high performance thanks to its clever architecture and high-quality Franco-Swiss components. Entirely designed and developed by Olivier Mory in La Chaux-de-Fonds, the regulating organs are manufactured in Switzerland while the bridges and mainplates are manufactured by YEMA in its Morteau workshops.
FRANCO-SWISS ACCURACY
With its Swiss regulating part, the CMM.30 tourbillon is a high-precision movement ensuring high performance. The free-sprung balance wheel regulates isochronism for lasting precision and stability. In the absence of a regulator, the durability of the hairspring is increased, as is long-term precision. Adjusted in 6 positions, the CMM.30 ensures an accuracy of –3 and +7 seconds per day.
105 HOURS OF POWER RESERVE THANKS TO A LARGE BARREL
The CMM.30 has a single large barrel optimized to ensure a power reserve of 105 hours. Specifically manufactured for the CMM.30 by Générale Ressorts, this large barrel is off-centered in order to make enough room for the gears and the balance wheel so as to preserve a contained thickness.
OPTIMIZED ESCAPEMENT
Interface between the gear train and the regulating organ, the escapement is the place where energy and chronometry intersect in a complex interaction. The escapement is an energy-demanding system, it alone consumes more than half of the barrels’ energy. It is the friction of the anchor pallets on the anchor which, despite their lubrication, dissipates a good part of this energy.
The CMM.30 tourbillon escapement presents notable improvements which reduce this friction thanks to an innovating and particularly sophisticated manufacturing process (LiGA technology). This advanced escapement ensures optimization of the entire mechanics, precision and longevity of the caliber components.
ANTI-MAGNETIC& SHOCK-RESISTANT
Designed for everyday life, the CMM.30 presents robust technical characteristics for a tourbillon caliber. Equipped with non-magnetic components, such as a Swiss-made non-metallic alloy hairspring, a Glucydur balance wheel with an adjustment mass made in gold and micro-components manufactured with LiGA technology materials, the CMM.30 is capable of withstanding exposures to electromagnetic fields up to 2,000 Gauss, a real feat for a tourbillon caliber.
The architecture of the tourbillon cage bridge with its free-sprung balance wheel and the shock absorbers manufactured by Kif make the CMM.30 impervious to shocks, vibrations, and acceleration up to 5,000 Gs in all directions.
TALENTED FRENCH WATCHMAKERS TEAM
Four talented French watchmakers, cumulating over 120 years experience at the most prestigious watch brands, have taken up the challenge of creating YEMA’s first Manufacture Caliber
Olivier Mory
Watchmaker Developer
20+ years experience at Audemars Piguet, Sellita, Piaget, Cartier, Panerai, Skill, YEMA
Patrick Augerau
Senior Watchmaking Engineer
45+ years experience at Omega, Audemars Piguet, YEMA
Jean-Paul Boillot
Master Watchmaker
40+ years experience at YEMA
Nicolas Bailly
Technical Watchmaker
15+ years experience at Cartier, Pro Horlogerie, YEMA
YEMA'S IN-HOUSE WATCHMAKING MACHINING CENTER
During the last two years, YEMA has made substantial investments aimed at insourcing a good part of its production, constantly improving the quality of the manufacturing processes as well as developing a future range of French Manufacture calibers.
This significant development has required substantial R&D, new equipment and the expansion and modernization of our workshops and production lines. YEMA’s Manufacture Calibers benefit from improved precision and performance and will soon equip premium YEMA timepieces.
LOCAL PRODUCTION
Over the past few years, YEMA has made significant investments aimed at insourcing a good part of its production and constantly improving the quality of its manufacturing processes by implementing latest equipment as well as expanding and modernising its workshops and production lines.
In addition, YEMA now works with new local partners in France and Switzerland within a range of 72km of its workshops, to secure a more responsible and higher quality production.
Movement Components
All Manufacture movement components are manufactured in France and Switzerland within a range of 72km from Morteau by recognized craftsman in fine watchmaking. The caliber bridges and mainplates are manufactured in YEMA’s workshops in Morteau where final assembly of all components takes place.
COMPONENTS
ORIGINS
Movement Design
Switzerland
Movement Components
France + Switzerland
Assemblies
France
A DYNAMIC REGIONAL WATCHMAKING ECOSYSTEM
YEMA workshops are based in Morteau, the cradle of French watchmaking, a few steps from the Swiss watchmaking region. This cross-border watchmaking community concentrated along the Jura mountains has gradually transformed into a true regional ecosystem recognized as Intangible Cultural Heritage by the UNESCO in 2020.
