Richard Mille Automatic RM 07-01 Ladies

Unveiled at SIHH 2014, this exceptional ladies’ timepiece boasts a skeletonised automatic movement and features a number of innovations developed by Richard Mille. The design and execution of the watch demonstrates a complete conceptual approach to the movement, case and dial. As a result, everything has been constructed according to extremely rigorous specifications and in complete harmony.

Baseplate and Bridges Made of Grade 5 Titanium
Microblasted grade 5 titanium with electroplasma treatment gives great rigidity to the baseplate, as well as precise surface flatness which is essential for the perfect functioning of the gear train. Bridges are also in grade 5 titanium, microblasted and electroplasma treatment. The skeletonised baseplate and the bridges were subjected to separate and extensive validation tests to ensure optimal strength requirements.

Rotor with Variable Geometry
– Heavy external outside edge and heavy edge ring in 5N red gold
– Weight segment in heavy metal
– Ceramic ball bearings
– Automatic winding system OneWay®  with ball bearings in ceramic
– Bidirectional winding system

This rotor with variable inertia has been incorporated into the caliber CRMA2 as it allows the rotor to be set according to the owner’s activity level. The setting is modified by adj usting the two weights which can be moved into the correct position and fixed in place by spline screws. Inertia of the movement is increased when the two weights are closer to each other and the barrel then rewinds more quickly. If the weights are positioned to the extremities of the rotor, the inertia is decreased, resulting in the barrel winding more slowly.

Free Sprung Balance with Variable Inertia
Guarantees greater reliability when subjected to shock and also during movement assembly and disassembly, hence better chronometric results over time. The regulator index has been eliminated, thus guaranteeing a more accurate and repeatable adjustment is possible thanks to 4 small adjustable weights located directly on the balance.

Fast Rotating Barrel (5 hours per revolution instead of 7.5 hours)
This type of barrel has the following advantages:  – The phenomenon of periodic internal mainspring adhesion is significantly diminished, thereby increasing performance,
– Provision of an excellent mainspring delta curve with an ideal power reserve/performance and regularity ratio.

Newly Developed Gear Teeth Profile
The entire going train of the watch, the primary transmitter of power throughout the movement, utilizes a special profile for the teeth of the wheels. Developed for the caliber CRMA2, the wheels use a 20° pressure angle. This system equalizes any discrepancies that might arise between the axles of each wheel, and promotes an excellent transmission of torque to the balance wheel, thus supporting excellent chronometric characteristics.

Spline Screws in Grade 5 Titanium for the Movement
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.

Movement
CALIBER CRMA2: skeletonised automatic movement with hours, minutes and adjustable rotor geometry.    Power Reserve: Circa 50 hours (±10%)
Movement dimensions: 29.90 x 22.00 mm
– Thickness: 4.92 mm  – Jewels: 25
– Balance: CuBe, 4 arms, 4 setting screws, inertia moment 7.5 mg cm , angle of lift 50º
– Frequency: 28,800 vph (4 Hz)
– Balance spring: AK3
– Shock protection: Incabloc 908.22.211.100 (transparent)
– Escapement wheel jewels: Rubifix (transparent)
 

CASE
The design and execution of the watch demonstrates a complete conceptual approach to the movement, case and dial. As a result, everything has been constructed according to extremely rigorous specifications and in complete harmony. For example, the casing ring is no longer used, and the movement is mounted on chassis mounting rubbers (ISO SW) fixed by 2 titanium screws. Features such as these are evidence of uncompromising workmanship. The caliber CRMA2 is highlighted by the combination of unique materials such as red gold for the caseband and white ceramic for the bezel and the caseback. It is particularly resistant to knocks and scratches and undergoes a long production process which results in a final matt surface finish. The caseband is in satin 5N red gold with polished pillars.

The RM 07-01 is available in TPZ-Z brown ceramic, in ATZ white ceramic and in white or red gold.  The three-part case is water resistant to 50 meters ensured by 2 Nitril O-ring seals. The case is assembled with 12 grade 5 titanium spline screws and abrasion resistant washers in 316 L stainless steel.Dimensions: 45.66 x 31.40 x 11.85 mm.

New Patented Stem-Crown Construction
This newly designed crown allows the integrity of the movement to be fully guaranteed and protected from external influences, since it does not use a classical crown attachment going into the depth of the movement’s heart. The result is that the crown is virtually impossible to dislodge and yet it is easily inserted and removed under the skillful hands of the watchmaker when needed; a typical view towards longevity that typifies the brand’s philosophy. An ideal solution for the long-term protection of the movement.

Spline Screws in Grade 5 Titanium for the Case
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.

Upper Flange
In carbon fiber; index points filled with approved luminous material.

Crystal
Bezel side: in sapphire (1800 Vickers) with anti-glare treatment (2 sides).
Thickness: 1.60 mm
Case back: in sapphire with anti-glare treatment (2 sides)
Thickness: at the center 0.95 mm and outer edges 1.67 mm

Finishing
Movement
– Microblasted anglage
– Microblasted milled section
– Microblasted sinks
– Electroplasma treatment for the baseplate and the bridges

Steel Parts
– Satin finished surfaces
– Anglage hand polished
– Hand polished sinks
– Burnished sections

Profile-Turning
– Lapped and polished ends
– Burnished pivots
– Post faces polished

Wheels
– Concave chamfering with a diamond tool
– Diamond polished angles
– Circular finished faces
– Rhodium-plating (before cutting the teeth)

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