The Rolex Caliber 3155, specifically referencing the 3155-626 Mitnehmerrad der Datumsanzeige (date wheel advance lever), represents a pivotal moment in the history of Rolex automatic movements. This sophisticated mechanism, responsible for the smooth and reliable advancement of the date, is a key component of a movement celebrated for its precision, durability, and elegance. This article delves deep into the Rolex Caliber 3155, exploring its background, history, specifications, intricacies, and the significance of the 3155-626 Mitnehmerrad der Datumsanzeige within the overall functionality.
A Legacy of Precision: The Genesis of the 3155
Before understanding the nuances of the 3155, it's crucial to place it within the broader context of Rolex's horological evolution. Rolex has always strived for unparalleled accuracy and reliability, pushing the boundaries of watchmaking technology. The Caliber 3155, introduced in the late 1980s, was a direct descendant of the highly successful Caliber 3035, inheriting many of its robust design features while incorporating significant advancements. The 3035 itself was a culmination of decades of research and development, building upon the lessons learned from earlier movements.
The 3155 wasn't simply an incremental improvement; it represented a considerable leap forward. While the 3035 was a workhorse movement known for its dependability, the 3155 refined its predecessor's strengths and addressed some of its perceived limitations. This involved enhancements in efficiency, accuracy, and overall longevity. The introduction of the 3155 signaled Rolex's commitment to continuous innovation, even within its established and highly successful lines.
Technical Specifications and Key Features of the Rolex Caliber 3155:
The Rolex Caliber 3155 is a self-winding (automatic) movement, meaning it uses the natural movement of the wearer's wrist to wind the mainspring. Key specifications include:
* Jewels: 31 jewels. These jewels, strategically placed throughout the movement, reduce friction and wear, contributing significantly to the movement's longevity and accuracy.
* Frequency: 28,800 vibrations per hour (vph), or 8 beats per second. This high frequency contributes to greater precision in timekeeping.
* Power Reserve: Approximately 48 hours. This allows the watch to continue running even if it's not worn for a couple of days.
* Components: The movement comprises hundreds of meticulously crafted components, each playing a crucial role in its overall function. The 3155-626 Mitnehmerrad der Datumsanzeige is just one, albeit a vital one, among these.
* Escapement: A highly efficient escapement system, responsible for regulating the release of energy from the mainspring and controlling the movement of the balance wheel. This system is critical for maintaining accurate timekeeping.
* Balance Wheel: The heart of the timekeeping mechanism, oscillating back and forth at a precise frequency. The balance wheel’s precise oscillation is crucial for accurate timekeeping.
* Hairspring: A delicate spring attached to the balance wheel, controlling its oscillation. The hairspring's properties are critical to the accuracy of the movement.
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