Remaining focused on the reliability of the movement and the correspondence between each creation and the individual way it is used by its owner, we developed the concept of a variable-geometry rotor for this model.
This automatic model applies all the technical knowledge we’ve accumulated in terms of design, choice of materials (titanium bridges, screws and baseplate) and the experience gained through the creation of our previous tourbillon models.
RM 010
Automatic Winding
RM 010
A REVOLUTIONARY ASSERTION OF THE BRAND’S GRAMMAR
RM 010 AUTOMATIC
CALIBRE RMAS7
Skeletonised automatic winding movement with hours, minutes, date and variable-geometry rotor.
POWER RESERVE
Circa 55 hours (± 10%).
RM 010
BASEPLATE AND BRIDGES MADE OF GRADE 5 TITANIUM
The baseplate and the bridges are crafted of grade 5 titanium, a biocompatible, highly corrosion-resistant and remarkably rigid alloy, which enables the gear train to function effortlessly.
The alloy is 90% grade 5 titanium, 6% aluminium and 4% vanadium. This combination further increases the material’s mechanical properties, which explains its frequent use in the aerospace, aeronautics and automobile industries.
The skeletonised baseplate and bridges have been subjected to intensive and complete validation tests to optimize their resistance capacities.
DATE DISPLAY
Semi-instantaneous, placed in a vertical aperture at 7 o’clock. The calendar disc of sapphire crystal is treated with nonreflective coating on both sides.
VARIABLE-GEOMETRY ROTOR
The Richard Mille RM 010 uses a variable geometry system to optimise the rotor’s winding motion.
Rotor specifications
• Arm in grade 5 titanium
• High palladium content 18K white gold weight segments
• Weight segment with 6 possible positions adjusted by screws in grade 5 titanium
• Ceramic ball bearings
• Unidirectional, anti-clockwise winding direction
This exclusive Richard Mille design makes it possible to effectively adapt rewinding of the mainspring to the user’s activity level, in sporting or non-sporting environments. By adjusting the six-position rib, the rotor’s inertia is modified to either speed up the winding process in the case of leisurely arm movements, or to slow it down during sporting activities.
As a result, this invention allows the movement’s winding mechanism to be optimised and personalised to the owner’s lifestyle.
MOVEMENT CHARACTERISTICS
Movement dimensions: 30.25 x 28.45 mm
Thickness: 4.14 mm
Number of jewels: 32
Barrel arbour: AP 20 steel
Balance: Glucydur®, 4 arms, moment of inertia 4.8 mg•cm2, angle of lift 53°
Frequency: 28,800 vph (4 Hz)
Balance spring: elinvar by Nivarox®
Shock protection: INCABLOC 908.22.211.100 (transparent)
Escapement wheel jewels: Rubifix (transparent)
Three-position stem: Manual winding, date, time setting
MOVEMENT CHARACTERISTICS
CASE
In order to produce each case, 68 different stamping operations are required for the three main components (bezel, caseband and caseback). The machine tooling process requires 8 days of adjusting the machines for the bezel, 5 days for the middle section and 5 days for the caseback. Prior to this process, developing a methodology for carrying out this series of operations took 120 hours, the drawings for the tools 130 hours, and implementation 180 hours.
Each rough case involves 202 separate machining operations. The design and execution of the watch demonstrate a holistic approach to conception of the movement, case and dial.
The tripartite case is water resistant to 50 metres, ensured by 2 Nitrile O-ring seals and is assembled using 12 spline screws in grade 5 titanium and abrasion-resistant washers in 316L stainless steel.
Finishing
Movement
• Baseplate and bridges in hand-ground grade 5 titanium, wet sandblasted, black PVD or Titalyt® treated
• Burnished pivots
• Sandblasted bridges
• Diamond-polished sinks on the bridge side
Steel parts
• Sapphire-blasted surfaces
• Anglage and polishing by hand
• Screw slot and screws bevelled and polished with rounded and polished tip
Wheels
• Sandblasted and rhodium-plated, bevelled wheels (before cutting the teeth)
• Minimal corrections applied to the wheels in order to preserve geometry and performance
Other features
DOUBLE-BARREL SYSTEM
The double-barrel system helps to improve torque stability over a longer period. This is achieved by distributing the stored energy across two winding barrels instead of one, which increases the number of rotations and reduces pressure on the teeth, bearings and pivots, resulting in better long-term performance.
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.
FREE-SPRUNG BALANCE WITH VARIABLE INERTIA
The free-sprung balance offers better reliability in the event of shocks, movement assembly or disassembly, and also guarantees better chronometric results over time. The regulator index is eliminated, and a more accurate and repeatable calibration is possible thanks to 4 small adjustable weights located directly on the balance.
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