RM 56-01
RM 56-01
RM 56-01

Men's collection

RM 56-01

TOURBILLON SAPPHIRE

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UNRIVALLED LEVEL OF DESIGN AND INNOVATION

When it was unveiled at the 2012 SIHH, the RM 056 split-seconds competition chronograph sapphire, a limited edition of 5 timepieces, caused a shock-wave in the watchmaking world with its pared down purity, its movement with exemplary finishing and its case made entirely of sapphire crystal. Following this technical feat and determined to continue challenging the very limits of fine watchmaking, Richard Mille has created another exceptional piece for 2013: the RM 56-01 Sapphire Crystal.

Main characteristics

The RM 56-01 Sapphire Crystal symbolises all the expertise Richard Mille has accrued in showcasing a caliber through its sheer transparency.
Because the machining of sapphire crystal is an extremely difficult process, the RM 56-01 is only available in a very limited edition of 5 timepieces

01
TORQUE INDICATOR
Supplies information about the mainspring’s tension, thus permitting the optimalization of the chronometric functioning of the movement. Below 53 dNmm, the spring is considered to be too slack, while above 65 dNmm, the excessive spring tension can adversely affect the mechanism’s operation, or else actually endanger it. (These indications appear on the numerical zone to the right of the barrel).

CALIBER RM56-01 Manual winding tourbillon movement with hours, minutes, power reserve indicator, function selector and torque indicator.

02
TORQUE INDICATOR
Supplies information about the mainspring’s tension, thus permitting the optimalization of the chronometric functioning of the movement. Below 53 dNmm, the spring is considered to be too slack, while above 65 dNmm, the excessive spring tension can adversely affect the mechanism’s operation, or else actually endanger it. (These indications appear on the numerical zone to the right of the barrel).

FUNCTION SELECTOR In a manner similar to a car’s gearbox, the function indicator allows one to see the winding, neutral and hand setting positions as the crown is pulled out. Each position is indicated via a hand at 4 o’clock displaying the following functions: W (Winding) – N (Neutral) – H (Hands).

03
TORQUE INDICATOR
Supplies information about the mainspring’s tension, thus permitting the optimalization of the chronometric functioning of the movement. Below 53 dNmm, the spring is considered to be too slack, while above 65 dNmm, the excessive spring tension can adversely affect the mechanism’s operation, or else actually endanger it. (These indications appear on the numerical zone to the right of the barrel).

BASEPLATE, CENTRE BRIDGE AND THIRD WHEEL IN SAPPHIRE CRYSTAL The baseplate has been entirely removed and replaced by large, transparent plates that support the entire movement. The rhomboid crystalline structure of synthetic sapphire crystal Al2O3 has a high melting point of 2,303 Kelvins and a linear-expansion minimal thermal coefficient (6 x 10-6), which combined offer exceptional stability even in the most extreme conditions. Its resistance to abrasion is also eight times greater than that of steel. The third wheel and centre bridge are also made from sapphire crystal. The sapphire crystal of the centre bridge is ribbed to enhance the rigidity of the whole construction, while lightening the structure. All the parts of the RM 56-01 made from sapphire crystal have been treated with an anti-glare coating, and have also been subjected to strict testing to optimise their resistance capabilities.

04
TORQUE INDICATOR
Supplies information about the mainspring’s tension, thus permitting the optimalization of the chronometric functioning of the movement. Below 53 dNmm, the spring is considered to be too slack, while above 65 dNmm, the excessive spring tension can adversely affect the mechanism’s operation, or else actually endanger it. (These indications appear on the numerical zone to the right of the barrel).

TORQUE INDICATOR Supplies information about the mainspring’s tension, thus permitting the optimalization of the chronometric functioning of the movement. Below 53 dNmm, the spring is considered to be too slack, while above 65 dNmm, the excessive spring tension can adversely affect the mechanism’s operation, or else actually endanger it. (These indications appear on the numerical zone to the right of the barrel).

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Approximate scale 1 : 1

Main characteristics

The RM 56-01 Sapphire Crystal symbolises all the expertise Richard Mille has accrued in showcasing a caliber through its sheer transparency.
Because the machining of sapphire crystal is an extremely difficult process, the RM 56-01 is only available in a very limited edition of 5 timepieces

CASE RM56-01

The entire case - front bezel, caseband, back of the RM 56-01 are cut and milled from solid blocks of sapphire.
No external structures are used to support the assembled parts.
Sapphire is known as a particularly scratch-resistant material with a hardness of 1800 Vickers. Made of aluminium oxide (Al2O3) crystals, it is transparent thanks to its molecular composition. 
The machining of such components was the biggest challenge faced by Richard Mille Watches, a challenge made all the more difficult as the sapphire machining process is exceptionally delicate.
Although extremely tough, sapphire does not allow for even the slightest error during milling and cutting. Creating a case of this quality took over 1000 hours of machining, of which 430 hours were spent on pre-forming the case components and 350 hours on polishing the whole watch case. For excellent optical properties, the front bezel and the back bezel have been treated with an anti-glare coating. 
The tripartite case is water resistant to 30 meters, ensured by two Nitril O-ring seals.
The case is assembled with 24 spline screws in grade 5 titanium and abrasion resistant washers in 316L stainless steel.

CASE RM56-01

The entire case - front bezel, caseband, back of the RM 56-01 are cut and milled from solid blocks of sapphire.
No external structures are used to support the assembled parts.
Sapphire is known as a particularly scratch-resistant material with a hardness of 1800 Vickers. Made of aluminium oxide (Al2O3) crystals, it is transparent thanks to its molecular composition. 
The machining of such components was the biggest challenge faced by Richard Mille Watches, a challenge made all the more difficult as the sapphire machining process is exceptionally delicate.
Although extremely tough, sapphire does not allow for even the slightest error during milling and cutting. Creating a case of this quality took over 1000 hours of machining, of which 430 hours were spent on