RM 07-01

Automatic Winding

Ladies are increasingly interested in and sensitive to the appeal of wrist watches. The RM 07-01 represents the perfect mechanical synthesis between Haute Horlogerie elegance and the ‘tough love’ provided by new materials.

RM 07-01

AESTHETIC APPEAL, PERFECT INTEGRATION

If the RM 07-01 shines with its extreme mechanical perfection, it also shines with the sensual and curvaceous lines of its tonneau shaped case design -the smallest of the collection- and its dial with a gemstone set center field.
The heart of this timepiece centres on the in-house designed CRMA2 calibre, a highly skeletonised automatic movement developed specifically for the RM 07-01.

CALIBRE CRMA2

The heart of the in-house designed CRMA2 calibre is a highly skeletonised automatic movement.

Hours, minutes and variable-geometry rotor

Power reserve : Circa 50 hours (± 10%)

Dimensions : 45.66 x 31.40 x 11.85 mm

MOVEMENT CHARACTERISTICS

Movement dimensions: 29.90 x 22.00 mm
Thickness: 4.92 mm
Number of jewels: 25
Balance: CuBe, 4 arms, 4 setting screws, moment of inertia 7.5 mg•cm2, angle of lift 50°
Frequency: 28,800 vph (4 Hz)
Balance spring: AK3
Shock protection: INCABLOC 908.22.211.100 (transparent)
Escapement wheel jewels: Rubifix (transparent)

MOVEMENT CHARACTERISTICS

GEM-SET BLACK CERAMIC AND CARBON TPT® CASE

Richard Mille continues to add to the variety of materials, gem settings and bracelets with an exclusive gem-set ceramic and Carbon TPT®.

With this unprecedented marriage of diamond and black case, the brand illustrates its indefatigable determination to develop its offerings for women who are as much fascinated by technicity as by beauty.

Dial : Diamonds set with Jasper, Onyx, Mother of Pearl, Jade, Carbon TPT® or full diamonds set

BASEPLATE AND BRIDGES MADE OF GRADE 5 TITANIUM

Microblasted grade 5 titanium with an 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. The bridges are also in grade 5 titanium, microblasted and electroplasma treated.

The skeletonised baseplate and the bridges were subjected to separate and extensive validation tests to ensure optimal strength requirements.

VARIABLE-GEOMETRY ROTOR

This variable-geometry rotor has been incorporated into the calibre to makes it possible to effectively adapt rewinding of the mainspring to the user’s activity level. The setting can be modified by adjusting two weights that can be adjusted and fixed in place by spline screws. The inertia of the movement is increased when the two weights are closer to each other; the barrel then rewinds more quickly. If the weights are positioned at the extremities of the rotor, the inertia is decreased and the barrel winds more slowly.

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

CARBON TPT® BRACELET

Considered to be a fundamental element by Richard Mille, a watch strap or bracelet deserves our undivided attention. Each one stands out for its aesthetics, which harmoniously continue the lines of the case, while providing resistance and comfort in all circumstances.

Exclusively premiered on the RM 07-01 Ladies’ in Carbon TPT®, the new bracelet – made from this same material – encapsulates this ambition. This micromechanical gem combines suppleness and extreme rigidity to astounding effect, while extending the tonneau shape all around the wrist.

The combination of these materials gives a total bracelet weight of just 29 grams.

Finishing

Movement

• Microblasted anglage
• Microblasted-milled section
• Microblasted sinks
• Electroplasma treatment for the baseplate and the bridges

Steel parts

• Satin-finished surfaces
• Hand-polished anglage
• Hand-polished sinks
• Burnished sections

Wheels

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

Other features

FAST-ROTATING BARREL (5 hours per revolution instead of 7.5 hours)

This type of barrel provides 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.

GEAR TEETH PROFILE

The entire going train of the watch, the primary transmitter of power through the movement, utilises a special profile for the teeth of the wheels. Developed specifically for Richard Mille’s in-house calibres, the wheels employ a 20° pressure angle. This system equalises any discrepancies that might arise between the centres of each wheel, for instance, during thermal changes and normal use, and promotes excellent torque transmission to the balance wheel, thus supporting excellent chronometric characteristics.

SPLINE SCREWS IN GRADE 5 TITANIUM FOR THE BRIDGES AND CASE

This permits better control of the torque applied to screws during assembly. These screws are therefore unaffected by physical manipulation during assembly or disassembly and age well.

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