Rolex Movement 4030 - BQ Watches

Introduction and Launch: The Rolex calibre 4030 is a self-winding chronograph movement that powered the Rolex Oyster Perpetual Cosmograph Daytona from 1988 to 2000. Based on the Zenith El Primero 400, Rolex modified the movement by lowering its frequency from 36,000 A/h to 28,800 A/h and enhancing it with a Breguet hairspring and Microstella screws for improved accuracy and stability. In 2000, Rolex replaced the calibre 2235 with its first fully in-house chronograph movement, the calibre 4130.

Technical Specifications

Jewels:

31 Jewels

Power Reserve:

Power reserve of approx 48 hours

Beat Rate:

Operating at 28,800 vibrations per hour (4Hz)

Movement:

Self-Winding mechanical movement

Escapement:

Calibre 4030 features features a traditional Swiss lever escapement. It consists of a balance wheel, hairspring, pallet fork, and escape wheel. This mechanism not only regulates the energy release from the mainspring but also maintains the balance assembly at a consistent and precise rate.

Anti-Shock:

Kif anti-shock system

Hairspring:

Breguet hairspring

Certification:

Calibre 4030 is certified by the Official Swiss Chronometer Testing Institute (COSC) for precision and accuracy as well as Rolex's Superlative Chronometer Certification. This is an in-house standard that ensures each Rolex watch meets exceptional precision, performance, and durability criteria.