Richard Mille RM 28

  • Location

Description

Very fine and rare 47 mm Titanium Case .
Automatic movement .

Variable inertia, free sprung balance

This type of balance wheel represents the ultimate in innovation. It guarantees greater reliability when subjected to shocks and also during movement assembly and disassembly, hence better chronometric results over time. The regulator index is eliminated and a more accurate and repeatable adjustment is possible thanks to 4 small adjustable weights located directly on the balance.

Double system barrel

The double barrel system helps to improve the stability of torque over a longer period. This is achieved by using more turns, thereby reducing pressure and friction on the teeth, the bearings and the pivots, resulting in improved long-term performance.

Other features

Movement dimensions: 30.25 x 28.45 mm
Thickness: 4.33 mm
Jewels: 32
Barrel arbor: in AP 20 steel
Balance: Glucydur, 4 arms, moment of inertia 4.8 mg•cm2, angle of lift 53º
Frequency: 28,800 vph (4 Hz)
Balance spring: ELINVAR
Shock protection: INCABLOC 908.22.211.100 (transparent)
Escapement wheel jewels: Rubifix (transparent)
Stem with three positions: manual winding, date adjustment, time setting. -
Very fine and rare 47 mm Titanium Case .
Automatic movement .

Variable inertia, free sprung balance

This type of balance wheel represents the ultimate in innovation. It guarantees greater reliability when subjected to shocks and also during movement assembly and disassembly, hence better chronometric results over time. The regulator index is eliminated and a more accurate and repeatable adjustment is possible thanks to 4 small adjustable weights located directly on the balance.

Double system barrel

The double barrel system helps to improve the stability of torque over a longer period. This is achieved by using more turns, thereby reducing pressure and friction on the teeth, the bearings and the pivots, resulting in improved long-term performance.

Other features

Movement dimensions: 30.25 x 28.45 mm
Thickness: 4.33 mm
Jewels: 32
Barrel arbor: in AP 20 steel
Balance: Glucydur, 4 arms, moment of inertia 4.8 mg•cm2, angle of lift 53º
Frequency: 28,800 vph (4 Hz)
Balance spring: ELINVAR
Shock protection: INCABLOC 908.22.211.100 (transparent)
Escapement wheel jewels: Rubifix (transparent)
Stem with three positions: manual winding, date adjustment, time setting.