RM 055
RM 055
RM 055

RM 055

NTPT

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JAPAN LTD EDITION

Our experience in developing resistance to G forces in our watches led us to choose grade 5 titanium for the baseplate and bridges of this “skeletonised” movement, as it is a material that provides the rigidity required for the accuracy and reliability of the movement. As the watch was to be used under extreme conditions, we opted for manual winding by a traditional crown.

Main characteristics

This watch was directly linked to the developments that took place in creating the tourbillon model for Bubba Watson.
This latest edition of the series is available exclusively at Richard Mille Japan boutiques.

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Main characteristics

This watch was directly linked to the developments that took place in creating the tourbillon model for Bubba Watson.
This latest edition of the series is available exclusively at Richard Mille Japan boutiques.

CASE IN NTPT

Extremely resistant and light, this composite is obtained by stacking 600 layers of silica only 45 microns thick. The assembly is then heated to 120 °C before being machined in our factory.

CASE IN NTPT

Extremely resistant and light, this composite is obtained by stacking 600 layers of silica only 45 microns thick. The assembly is then heated to 120 °C before being machined in our factory.

CALIBRE RMUL2

Manual winding skeleton movement with hours, minutes and seconds; inspired by Caliber RMUL1. Movement weight: 4.3 grams.

CROWN

In NTPT with O ring seal in Alcryn®

CROWN

In NTPT with O ring seal in Alcryn®

Characteristics

DOUBLE BARREL SYSTEM
The double barrel system helps improve torque stability over a longer period by reducing pressure and
wear on the teeth, bearings and pivots, resulting in improved performance.

CRYSTAL
- Bezel side: in sapphire (1,800 Vickers) with anti-glare coating (on both sides).
- Thickness: 1.50 mm
- Case back: in sapphire (1,800 Vickers) with anti-glare coating (on both sides).
- Thickness: 1.20 mm and 2.04 mm at the outer edges

OTHER FEATURES
- Movement dimensions: 30.25 x 28.45 mm
- Thickness: 3.15 mm
- Number of jewels: 24
- Barrel arbour in 20AP steel
- Balance wheel: GLUCYDUR, 4 arms, moment of inertia 4.8 mg.cm2, angle of lift 53°
- Frequency: 28,000 vibrations per hour (4 Hz)
- Balance spring: Elinvar
- Shock protection: Incabloc 908.22.211.100 (transparent)
- Escapement wheel jewels: Rubifix (transparent)
- Two winding shaft positions: winding and hand setting

FINISHING

MOVEMENT
- Baseplate and bridges in grade 5 titanium, wet sanded, coated in PVD and with a straight-line grain finish after coating
- Hand-polished lock-points
- Burnished pivots
- Pinions with undercuts
- Sandblasted and rhodium-plated bevelled wheels
(before cutting the teeth)
- Minimal corrections to preserve the geometry of the wheels
and their performance.

STEEL PARTS
- Screw slot and screws bevelled and polished with rounded and polished tip
- Straight-line grain finish of the upper surfaces - Lower surfaces microblasted
- Hand-polished surfaces
- Hand-polished angles

WHEELS
- Sandblasted and rhodium-plated bevelled wheels (before cutting the teeth)
- Minimal corrections applied to the wheels in order to preserve geometry and performance.

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