Posted on

An extraordinary movement in watchmaking history: the Rolex 1575.

replica Rolex watches has always been known for producing high quality and reliable movements. We only need to browse through the brand’s current list of movements to see that over the past few decades, quality and functionality have been part of Rolex’s mechanical engineering The top priority.

Introduced in 1988, the 3135 calibre is the main movement behind many models and is also responsible for constructing things like second time zones and day calendars. A solid foundation for a complication movement. In recent years, however, the 3135 movement has been relegated to the background, and the 32xx series has begun to shine accordingly. It is expected that the 31xx movement will be completely replaced by the 32xx in the coming years. But long before the new calibers took the stage, Rolex relied on the 15xx series to guarantee accurate timekeeping.

When it comes to automatic movements, the Rolex 1575 is the best of the best and has everything going for it. It is hardwearing, robust, elegant and an excellent timekeeper. Interestingly, after a thorough overhaul and after leaving the Rolex Service Centre, these movements are sent to COSC for testing and remain A daily error of -2/+2 seconds. This was a technical feat for a movement of its time.

The Rolex Calibre 1575: a brief history

Introduced in the mid-1960s, the 1575 movement has a not-so-grand history as a movement. Rolex produced the 1575 movement because it needed a robust and reliable automatic watch. And the 1575 movement has successfully accomplished the task.

The 1575 movement is an improvement on the 1560 movement, which has a frequency of 2.5 Hz and a power reserve of 44 hours. The 1575 movement builds on this success by increasing the frequency to 2.75 Hz and adding a stop-seconds function, most notably the Added 4 hours of power reserve.

Rolex caliber 1575: specifications

The 1575 movement is 28.2 mm in diameter, contains 25 jewels, has a date display and is equipped with a wound balance spring. Since functionality is the main priority in the designer’s mind, the touches are not worth writing a book about. The baseplate has a speckled pattern, while the bridge is decorated with a light micrograin. Functionality and ease of repair are the highlights of the 15xx collection. The barrel bridges are sturdy, but not bulky, housing the barrel underneath. The wheel system bridges also keep all wheel systems under tight protection. Of particular note is the escapement wheel’s shock-absorbing function. This function is most commonly used on balance wheel pivots, but is unusual for escapement wheels. Other brands also have it, but it is rare and can only be found on the back of the watch, suggesting that it is more for “show” than for function. In the case of the Rolex Caliber 1575, the escapement wheel is visible on both sides of the dial and the case back. The pivots of the escapement wheel are in good condition, and the extra protection has undoubtedly had a positive effect. The escapement wheel of most Rolex movements today is equipped with a shock absorber.

The balance wheel is fitted with a star-shaped fine-tuning screw that can be turned clockwise or counterclockwise as needed to adjust the balance inertia and the rate of the watch. The caliber 1575 has a non-jamming balance, which eliminates the need for an adjustment pin (fast or slow hand). The adjusting pin varies the oscillation period by controlling the effective length of the hairspring. The disadvantage of this system is that the adjusting pin can be displaced if the watch is shocked, which can lead to errors in timing. This problem is eliminated by the fact that the snubless balance has no adjusting pins and is adjusted by its own moment of inertia.

The mass of the oscillating weight is large enough to carry out the heavy task of winding the watch. The oscillating weight rotates around a central pivot (rather than a ball bearing) and is held in place by two rubies, which reduces friction and improves performance. This design can also be seen in the Rolex 30xx and 31xx movements. In addition to the oscillating weight and escapement wheel shock absorbers, the instantaneous-jump calendar function of the 15xx series is also used by Rolex to this day. First, let’s clarify a point. Please note that the 1575 caliber has only a basic time and date display; correspondingly, the 1575 GMT caliber has only a GMT time display function. In addition, when a watch powered by the 1575 movement is dismantled, the movement bridges may be marked “1570”! . This is not necessarily incorrect, just something that would have happened in those times. The date was changed at midnight, with the aid of a cam, a spring and a jewel. When the time comes to midnight, the lever to which the jewel is attached jumps into the cam cutout so that the date is exactly at midnight. Midnight produces change.

Caliber 1575 is definitely the kind of movement that is popular with watchmakers. It’s relatively easy to manufacture and maintain, it still performs well decades after it’s been produced, and it’s never boring.

Caliber 1575 is also a consumer-friendly movement that has remained accurate, robust and reliable for many years after it left the factory. Not the most elegant or visually appealing movement in history, but when it comes to performance requirements, it’s always perfectly suited to the task.

Leave a Reply