Rolex is a company known for their complete watches, but as a full manufacture they also produce many notable watch movements. They have historically focused on simple rather than complicated movements, but this is changing in the 2010's. This is a list of the main calibre families from Rolex.
18,000 A/h, identical to the Alpina 835 and Gruen 835 (Alpina Gruen Guild).
18,000 A/h, automatic
The Rolex 620 had the first true automatic rotor winding mechanism in 1932. The name, “Perpetual” appeared soon after and remains in use ever since for automatic Rolex movements.
The Rolex 1030 was the company's first in-house complete calibre design. It was chronometer certified and was used in Rolex chronometers even after the introduction of the first-generation 15xx series.
18,000 A/h, sweep seconds, automatic, Breguet hairspring, 12.5
sweep seconds, automatic, free-spung Breguet hairspring with regulating screws, 18,000 A/h - 12.5
sweep seconds, automatic, hacking, free-spung Breguet hairspring with regulating screws, 19,800 A/h - 12.5
The 2000 Series is a family of smaller calibres for ladies watches and other specialty applications introduced in 1970.
Rolex introduced the 3000 series of movements in 1977. This family quickly replaced most of the earlier movements, with only a few remaining in production.
The third-generation calibres in the 3000 family add Parachrom anti-magnetic hairsprings (later upgraded to Parachrom Blue).
The fourth generation Calibre 3000 family, introduced in 2015, includes the Chronergy escapement and has a optimized gears and lubricants and a larger mainspring inside a thinner barrel for 70 hour power reserve. Rolex claims that 90% of the components are changed from the previous generation calibres.
Rolex used chronograph calibres from other manufacturers until the 1989 introduction of the Rolex 4030 for the Rolex Daytona. The 4000 series is a modern design with 28,800 A/h speed, a vertical clutch, and a column wheel.