Dismantling of the China replica Rolex Daytona 4130 movement

The Rolex 4130 movement originated from the Zenith EL PRIMERO chronograph movement, the swing frequency was reduced from 36000 to 28800, the power was 52 hours, and 31 jewel bearings; the EL PRIMERO calendar function was removed; Rolex non-caliber weights were replaced Fine-tune the balance wheel; replaced with Rolex's Breguet-style top-winding hairspring, replacing the original flat hairspring of EL PRIMERO, which was named 4030 automatic chronograph movement by Rolex, and in 1988, Rolex launched Daytona using the 4030 movement 16520 (165XX series Daytona).

Rolex 4130 automatic chronograph movement, launched in 2000, is Rolex's first self-produced automatic chronograph movement. The 4130 automatic chronograph movement, used for the first time on Daytona 116520, replaced the 4030 automatic chronograph movement used on Daytona 16520 (Rolex purchased the Zenith El Primero chronograph movement, and it was modified to be numbered 4030 movement. ).

Disassembly and assembly of the Chinese version of Rolex Daytona 4130 movement video

video

Through the video disassembly of the domestic version of the Rolex 4130 movement, it can be found that many movement parts can be used in common with the Swiss movement 4130. The movement cost more than 10 million to build, and there are more than 300 single parts. This technology is not a simple blow. Came out, but the only difference is that the balance spring cannot fully correspond. This problem is because Rolex hairspring is exclusively produced by Rolex, and China's current level of hairspring is still not on par with Switzerland. One point that China has broken the hairspring technology is actually material technology. China can also build a car with a 3-second daily difference. core.

What is the difference between the genuine Rolex Daytona 4130 movement and the domestic 4130 movement?

The steel material of the genuine Rolex movement is made of more perfect titanium alloy steel, with higher purity and better anti-magnetic effect, while the 4130 movement made in China uses domestic steel, which is not as good as Swiss special steel.

Another problem is the most critical part of the movement, the balance spring. The Swiss imported 4130 movement uses an improved Parachrom hairspring, and the domestic 4130 uses the same hairspring of the Seagull and Shanghai factory. It is understandable that the time accuracy is not as good as that of the original factory.

What hairspring is used in the Rolex 4130 movement?

In 2000, Rolex successfully developed an innovative hairspring and obtained a patent, officially called the Parachrom hairspring. The alloy material is composed of niobium, zirconium metal, etc. The early Parachrom hairspring is silver-white.

Parachrom hairspring was first used in Daytona's 4130 calibre in 2000, and it was gradually equipped with all men's watch movements in the Oyster series.

In 2005, Rolex adopted a new patented technology to improve the surface of Parachrom hairspring, further improve the long-term stability of the hairspring, and give this hairspring a unique blue characteristic.