16157

RM 015 TOURBILLON SECOND TIME ZONE 515.48.91

Inquire for price

currently unavailable
Shop Richard Mille

Product Details
  • Movement Type: Tourbillon
Description

Richard Mille RM 015 Tourbillon Second Time Zone Watch 515.48.91: This platinum watch with blue trim features manual winding tourbillon movement with hours, minutes, second time zone, power reserve indicator, torque indicator and function selector. Also available in red gold, white gold and platinum.

About Richard Mille

Herald at their intial release in 2001 as a break from the past and a new direction of horology, the wristwatches of Richard Mille were from their very inception, extraordinary and uncompromising.

Product Specifications

TECHNICAL SPECIFICATIONS OF THE RICHARD MILLE TOURBILLON RM 015 PERINI NAVI

Inspired by the world renowned and extraordinary sailing vessels created by the yacht builders Perini Navi of Viareggio, Italy, the RM 015 echoes the visual elements and nautical details found on these luxurious craft. The shapes of the crown and the case outlines, the tourbillon and winding barrel bridges, the titanium screws of the case and movement, as well as many other elements are directly inspired by details found on the ocean going vessels created by Perini Navi.

MARINE CALIBER RM015: manual winding tourbillon movement with hours, minutes, second time zone, power reserve indicator, torque indicator and function selector.

Dimensions: length 48 mm x 39.30 mm (widest point) x 13.84 mm (thickest area).

MAIN FEATURES
(MANY OF WHICH ARE MAJOR TECHNICAL INNOVATIONS)

POWER RESERVE
circa 75 hours (indicated on the numeric scale positionned between 1 and 2 o’clock).

CARBON NANOFIBER BASEPLATE
This is an isotropic composite material created from carbon nanofibers molded under a high pressure of 7,500 N/cm2 and a temperature of 2,000??C, resulting in a material with high mechanical, physical and chemical stability in all directions. The ribbed perimeter of the movement plate assures the highest  rigidity between the plate and bridges. Carbon nanofiber composite structures such as this are  amorphous, chemically neutral and dimensionally constant within a very wide range of operating  temperatures, including those outside of normal ranges. This stability assures the highest integrity of the  movement’s going train under all conditions.

TORQUE INDICATOR
Shows the mainspring tension and enables the movement timing to be optimized. Below 53 dNmm, the spring is too slack; at the other extreme, above 65 dNmm, excessive tension can adversely affect the running of the movement and may even cause damage. (These indications appear on the numeric scale positionned between 2 and 4 o’clock).

SECOND TIME ZONE INDICATOR
Indicates a second time zone with numbers on a transparent sapphire crystal disc. These come into view when suspended above the light colored field near 10:30. The second time zone is simple to adjust via a pusher located at 9 o’clock.

VARIABLE INERTIA, FREE SPRUNG BALANCE
The free-sprung balance gives better reliability in the event of shocks, allows for efficient movement assembly and disassembly, and also guarantees better chronometric results over an extended period of time.

FAST ROTATING BARREL (6 hours per revolution instead of 7,5)
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.

BARREL PAWL WITH PROGRESSIVE RECOIL
This device permits an appreciable winding gain (circa 20%), especially during the start of winding. It also aids in the even distribution of the mainspring’s internal tension.

FUNCTION SELECTOR
In a manner similar to a car’s gearbox, a push-button located at the center of the crown allows one to select the winding, neutral and hand setting functions with a simple push. A hand at 4 o’clock displays the selected function: C (Carica) winding – N (Neutrale) neutral – L (Lancette) Hand setting.

MODULAR TIME SETTING MECHANISM FITTED AGAINST THE CASE BACK
Provides the following advantages for longevity and maintenance:
• Since the component is mounted outside of the movement, the time setting assembly can be changed without affecting the integrity of the bottom plate in the event of a possible defect or during maintenance;
• The mounting and dismantling of this module from the back will not require the removal of the hands and the dial.

WHEEL BASED TIME SETTING SYSTEM (back of the movement)
Provides smooth time setting functions through the elimination of engaging friction by replacing it with rolling friction.

BALANCE SPRING
Developed in the 18th century, perfected and codified in the 19th, the specially calculated curvature of the balance spring provides excellent chronometric results in tourbillon escapements.

ESCAPEMENT
New in-line escapement design, aimed at reducing friction.

CERAMIC ENDSTONE FOR THE TOURBILLON CAGE
This reflects a technical and long-term view towards the elimination of wear phenomena, resulting in improved technical tribology.

CENTRAL BRIDGE IN INOX STEEL
The ribs ensure better rigidity for the bottom plate/bridge assembly.

WINDING BARREL TEETH AND THIRD-WHEEL PINION WITH CENTRAL INVOLUTE PROFILE
The central involute profile of the winding barrel teeth and pinion provides an optimal pressure angle of 20°. This promotes effective rotary motion and allows for compensation of possible variations in the engagement of the going train, thus insuring excellent torque transmission with a distinct improvement in performance.

SPLINE SCREWS IN GRADE 5 TITANIUM FOR THE BRIDGES AND CASE
This permits better control of the torque applied to the screws during assembly. These screws are therefore unaffected by physical manipulations during assembly and disassembly and age well.

OTHER FEATURES
• Movement dimensions: 30.20 x 28.60 mm
• Thickness: 6.35 mm
• Tourbillon diameter: 12.30 mm
• Balance wheel diameter: 10 mm
• Number of jewels: 23
• Balance: GLUCYDUR, 2 arms, 4 setting screws, inertia moment 10 mg.cm2, angle of lift 53º
• Frequency: 21,600 vph (3 Hz)
• Balance spring: ELINVAR by NIVAROX
• Torque indicator with reference measurement in dNmm
• Shock protection: KIF ELASTOR KE 160 B28
• Jewels set in white gold chatons
• Barrel shaft in nickel-free chronifer (DIN x 46 Cr 13 + S), with the following characteristics:
• stainless - antimagnetic - suitable for tempering.

FINISHING

MOVEMENT
• Anglage and polishing by hand
• Locking sections hand polished
• Sapphire blasted milled sections
• Lapped and polished contact points
• Burnished pivots

STEEL PARTS
• Sapphire blasted surfaces
• Anglage and polishing by hand

GEAR WHEELS
• Concave chamfering with a diamond tool
• Circular finished faces
• Gilded (before cutting the teeth)
• Minimum correction applied to the wheels in order to preserve geometry and performance.

 

Have a quick question or comment?

Receive Updates from Trusted