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https://strapchange.com/what-are-watch-jewels-what-does-21-jewels-mean/
What does “21 jewels” mean? As all watches have many moving parts, jewels were inserted to lessen the wear and tear on the bearings and other pivot points. Meaning all the rotating parts and other high frictional points in the watch; which before were metal againts metal parts, were exchanged with hard jewels.
https://www.prestigetime.com/blog/what-are-the-jewels-in-a-watch-for.html
Jul 25, 2021 · How many jewels should a watch have? Balance Wheel. One impulse jewel can be found in the assembly where the escapement level hits it. Staff Pivot. Two pairs of jewels (a hole jewel and a cap jewel x 2) are used as pivot bearings on staff pivot. Center Wheel. Two jewels (a hole jewel …Estimated Reading Time: 6 mins
http://www.swiss-watches-guide.com/21-jewel-movement.html
A 21 jewel movement was – and still is - used to help keep the watch running smoothly. Tiny synthetic gem crystals are set between many of the gears, in order to reduce friction. These gems resist temperature better than metal, and hold lubricant much longer.
https://timepieceking.info/what-is-a-watch-jewel/
In the case of a 21 jewel watch, it also has a fully jeweled movement. A 21-jewel watch contains 21 jewels in the specified parts of the watch as bearings. A 21-jewel watch often also includes some extra capstones to lessen positional eros and improve accuracy. In this case, high-quality automatic watches tend to have an extra number of jewels.
https://www.thewatchsite.com/threads/21-jewels-meaning.10845/
Nov 30, 2016 · Jewels, in watch terms, are tiny, synthetic, non-precious stones used in watch movements as bearings. These jewel bearings wear very slowly, and reduce friction in the movement. The more jewels, the higher grade the watch is (in general). A typical good quality hand-wind or automatic watch should have about 17 jewels as a minimum. Quartz watches have few or none. Most Seiko mechanical watches have between 17 and 25 jewels.Estimated Reading Time: 4 mins
https://www.benswatchclub.com/blog/what-are-jewels-in-a-watch
Sep 01, 2020 · Watch jewels, sometimes known as jewel bearings, are tiny pieces of synthetic ruby or sapphire set into holes within a watch movement. These gems primarily help to reduce friction and provide a hard, smooth surface to allow metal components such as the wheel train to rotate freely. The predictable friction of these jewels aids accuracy and their durability helps to increase the life of the …Estimated Reading Time: 6 mins
https://quillandpad.com/2018/06/29/the-number-of-jewels-in-a-watch-movement-indicates-value-doesnt-it-a-myth-debunked/
Jun 29, 2018 · Jewel count only means anything if the jewels are functional. Jewels that are added only to increase the jewel count add expense to the manufacture of the watch, without providing any real benefit. Jewels are meant to provide wear protection to friction surfaces to prevent the watch from breaking down after only a short period of time in use because it takes a gemstone longer to wear …Estimated Reading Time: 7 mins
https://www.bobswatches.com/rolex-blog/resources/jewels-purpose-watch-movements.html
Jul 16, 2019 · Rubies in your timepiece actually indicate quality. The jewel count of a watch is often a direct indicator of the complexity of the mechanism. To put things into perspective, the average mechanical watch will utilize 17 jewels. The vast majority of them serve as either cap or pivot jewels; however an impulse jewel is used for the balance wheel ...Estimated Reading Time: 4 mins
https://www.quora.com/My-watch-has-26-jewels-how-does-this-compare-to-other-watches-in-quality
The ETA 2824 has 25 in total. That means the “extra” jewels are in the automatic module, the only function of which rewinding the watch. The “extra” 4 jewels have no influence on precision or performance since they just have to do with the winding system. The movement performs no better than if it had the minimum of 21 jewels. Then, there is another good swiss movement which is the ETA 2892. It only …
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