The Rolex Datejust, a timeless icon of horological excellence, has been powered by a succession of meticulously crafted movements. Among these, the calibers 2235 and 2236 stand out as significant iterations, each representing advancements in precision and reliability. While both movements power the venerable Datejust, understanding their differences is crucial for any serious Rolex enthusiast or prospective buyer. This article delves deep into the specifications, features, and differences between the Rolex caliber 2235 and 2236, providing a comprehensive comparison to help you navigate the world of Rolex Datejust movements.
Rolex Caliber 2235: A Legacy of Precision
The Rolex caliber 2235 is a self-winding mechanical movement renowned for its robustness and accuracy. It's a workhorse movement, powering a significant number of Datejust models for many years. The 2235 boasts a traditional architecture, incorporating features that have become synonymous with Rolex quality:
* Self-Winding Mechanism: The movement utilizes a highly efficient rotor system, automatically winding the mainspring through the natural movement of the wearer's wrist. This eliminates the need for manual winding, ensuring consistent power reserve.
* Chronometer Certification: Like most Rolex movements, the 2235 is officially certified as a chronometer by COSC (Contrôle Officiel Suisse des Chronomètres). This rigorous testing guarantees exceptional accuracy within specific tolerances.
* Date Function: The 2235 features a quick-set date function, allowing the wearer to easily adjust the date without affecting the timekeeping. The date changes instantaneously at midnight.
* Shock Resistance: The movement incorporates shock-absorbing mechanisms to protect the delicate internal components from impacts and vibrations.
* Jewels: The 2235 typically consists of 31 jewels, contributing to its smooth operation and longevity.
* Power Reserve: The movement offers a power reserve of approximately 48 hours, meaning it can run for two full days without being worn.
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While specific details regarding the exact number of components and escapement type might vary slightly depending on the manufacturing year and specific model, the core functionality remains consistent. The 2235 is a dependable and accurate movement that has stood the test of time.
Unfortunately, a comprehensive list of all Rolex models utilizing the 2235 movement is not readily available in a single, publicly accessible source. Rolex's historical records are not entirely public, and many variations exist within the Datejust line. However, it's safe to say that a significant number of Datejust models produced over a considerable period used this reliable caliber. Many vintage and pre-owned Datejust watches on the market still feature the 2235.
Rolex Caliber 2236: An Evolution of Excellence
The Rolex caliber 2236 represents a significant evolution over its predecessor, the 2235. This movement incorporates several advancements that enhance performance, efficiency, and longevity:
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