RM 50-02 Tourbillon ACJ

RM 50-02 manual winding tourbillon two-second chronograph ACJ

Collaborative approach

Airbus is a world leader that needs no introduction. It is a world leader in applying new aviation design methods, especially those aircraft built by its ultra-luxury subsidiary Airbus Corporate Jets or ACJ for individual customers. Therefore, Richard Mille (Richard Mille) and ACJ naturally teamed up to create this watch masterpiece inspired by their respective worlds.

RM 50-02 Tourbillon ACJ

Caliber RM50-02
Manually wound tourbillon movement with hour, minute, split-second chronograph and running seconds, 30-minute totalizer and power reserve, torque and function indicators.

Power reserve
Approximately 70 hours (± 10%) The chronograph does not run. The actual power reserve result will depend on the usage time of the chronograph.

Frame 5 grade titanium base plate and bridge

RM 50-02 uses advanced hollow design elements in the design of its plywood and bottom plate, made of grade 5 titanium, and extensively hollowed out in every possible area to achieve significant weight reduction. Many parts in the movement are coated with unique aerospace coatings, which are commonly used to protect engine and chassis components from corrosion and environmental conditions.

The bottom plate is made of grade 5 titanium, a biocompatible, highly corrosion-resistant and very strong alloy that allows the gear train to function effortlessly.

The alloy is 90% grade 5 titanium, 6% aluminum and 4% vanadium. This combination further enhances the mechanical properties of the material, which explains its frequent use in the aerospace, aviation, and automotive industries. The bottom plate of the movement RM50-02 has been modified to achieve an extremely high weight/resistance ratio. The hollow base plate and bridge have undergone intensive and complete verification tests to optimize their resistance.

In order to give the movement more depth, some plywoods are made of stainless steel and are given a golden appearance through the aircraft coating process.

A second hand chronograph with even better performance

The modern architecture of the movement allows for the coherence and rational arrangement of each component, avoids unnecessary complexity, and achieves the best use of functions through technical solutions. luxury tourbillon watches

For example, the geometric design of the column wheel that controls the different levers has been studied to ensure the perfect, long-term, stable and synchronized operation of the chronograph device, which is an essential function of a high-performance watch. Chronograph.

In addition, the development of a new generation of rattrapante assembly has reduced the energy consumption of this function by 50% by reducing friction on the spindle. Just like preventing the chronograph second hand from jumping, this is achieved through research focusing on the work of the rattrapante arm.

Function indicator
In a similar way to a car gearbox, the function indicator can identify winding, neutral and manual setting positions when the crown is pulled out. The active position is indicated by the pointer at 4 o’clock: W (winding)-N (neutral)-H (pointer).

Torque indicator

This indicator provides information about the tension of the mainspring, thereby optimizing the chronograph function of the movement. Below 5.3 N.mm, the spring is considered too loose, and above 6.5 N.mm, excessive tension in the spring can adversely affect the operation of the mechanism or actually endanger it.

Power reserve indicator

The power reserve indicator is located on the scale at 11 o’clock and shows the number of hours of energy remaining in the mainspring before it must be wound again. discount watches

Free spring balance with variable inertia
The free-spring balance provides better reliability in the event of shocks, assembly or disassembly of the movement, and guarantees better timing results over time.

Modular time setting device installed on the back of the watch
Provides the following advantages for longevity and maintenance:
• Since the components are installed outside the movement, in the event of possible defects or during maintenance, the time setting components can be changed without affecting the integrity of the bottom plate.
• Installing and removing the module from the back does not require removing the hands or dial.

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Sports characteristics

Movement size: 32.00 x 30.40 mm
Thickness: 7.87 mm
Tourbillon diameter: 12.30 mm
Diameter of balance wheel: 10.00 mm
Number of gems: 37
Balance wheel: Glucydur®, 2 swing arms, 4 positioning screws, moment of inertia 10 mg•cm2, lifting angle 53º
Frequency: 21,600 vph (3 Hz)
Hairspring: elinvar by Nivarox®
Shockproof: KIF Elastor KE 160 B28
Barrel Shaft: Nickel-free Chronifer (DIN x 46 Cr 13 + S) has the following characteristics: stainless steel-anti-magnetic-suitable for tempering

Titanium aluminum housing

The highly unique and novel case shape is made of titanium aluminum alloy (TiAl), with a white ATZ ceramic auxiliary bezel, designed to reflect the outline of the typical window shape of ACJ, and with a clearly visible multilayer hull structure surrounding. Titanium Aluminum is an intermetallic alloy with characteristics between metal and ceramic, physical properties of metal and mechanical properties similar to ceramics. It exhibits extremely high rigidity and is much lighter than classic titanium alloys. It is the same alloy used in the jet turbine blades of Airbus aircraft.

Torque limiting crown
The Airbus logo with a wave pattern is engraved on the crown inspired by a jet engine. The crown also contains a special safety system to prevent accidental over-winding, which may damage the winding stem or exert extreme pressure on the barrel spring.

TORQ-SET® screws
Torq-set® screws use a wave-shaped groove pattern in which each arm of the groove is also offset from its adjacent arm.

These types of screws are used in aerospace applications where the applied torque must be accurately executed and provide safety to prevent tampering. Compared with the cross-shaped design, this configuration provides greater strength in the screw and has excellent torque transmission. richard mille fake