Rolex Dynapulse Escapement

The Rolex Dynapulse escapement is a patented escapement system first used in the Rolex calibre 7135. After 10 years of development, this exclusive in-house escapement technology was introduced by Rolex in the Land-Dweller model at Watches & Wonders 2025 in Geneva.

The Dynapulse contains 7 patents and was designed to offer increased efficiency when distributing energy from the mainspring to the oscillator. Quantitatively, the Dynapulse escapement is said to be 30% more efficient than a standard Swiss lever escapement.

In Rolex’s own words:

“This revolutionary sequential distribution escapement is crafted from silicon and benefits from an exclusive architecture. It is lightweight, shock resistant, virtually insensitive to magnetic fields, and boasts energy efficiency far superior to that of a Swiss lever escapement.” –Source

Materials:

The known materials used for the Dynapulse escapement include:

Silicon

The use of silicon gives these components anti-magnetic properties, resistance to temperature fluctuations, enhanced durability and shock resistance, as well as being self-lubricating.

The dual escape wheels and lever in the Dynapulse escapement are made out of silicon.

The Syloxi hairspring is also made from silicon, or more specifically, a silicon oxide composite. This hairspring was introduced in 2014 (caliber 2236), and more recently found in the caliber 7140 with the Chronergy escapement.

Ceramic

The balance staff is constructed out of ceramic.

Brass

The balance wheel is made out of brass.

Dynapulse VS Chronergy:

Escape wheel and lever materials: The Dynapulse is made out of silicon. The Chronergy is a nickel phosphorus alloy.

Lubrication:

“The Dynapulse escapement in calibre 7135 is lubricated and assembled differently from the Swiss lever escapements in other Rolex movements. Because of the way this escapement functions, oil rather than grease is used for lubrication. Applied using a curved precision needle, the oil is dispensed on a scale of nanolitres. This delicate and complex operation called for the design of a special assembly process. The Dynapulse escapement is built and lubricated on an external support before it is inserted in the movement – a completely novel approach for the manufacture.” –Source

Video:

Calibers with the Dynapulse escapement: