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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 …
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.
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://www.prestigetime.com/blog/what-are-the-jewels-in-a-watch-for.html
Dec 11, 2020 · What does 21 jewels mean in a watch? Similar to a 17-jewel watch that has a fully jeweled movement, but also has a few extra capstones added which are used to reduce positional errors. These extra stones are often found in higher-quality watches.
https://www.quora.com/What-does-it-mean-when-a-watch-has-21-jewels-and-what-is-their-functionality-in-the-watch-movement
Sep 14, 2019 · Jewels are a way to act as bearings for the wheels and cogs to turn on. They're made from artificial sapphire. They're placed in those places with the highest chance of friction, and are lubricated too. Some cheap movements will make do with five ...
https://answers.yahoo.com/question/index?qid=20130612072705AA2xT8D
Jun 12, 2013 · What is the meaning of 21 jewels in Seiko watch? => When the number of jewels is stated on the watch dial that means it is a mechanical watch …
https://answers.yahoo.com/question/index?qid=20060829163718AAUL4eB
Aug 29, 2006 · Reducing friction is an extremely important goal in watchmaking. Jewels have two important properties that help reduce friction. First, they can be made to be very smooth, and therefore they let the metal parts slide easily.
https://quillandpad.com/2018/06/29/the-number-of-jewels-in-a-watch-movement-indicates-value-doesnt-it-a-myth-debunked/
Jun 29, 2018 · 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 away than bare metal.
https://en.wikipedia.org/wiki/Mechanical_watch
A 17 jewel watch has every bearing from the balance wheel to the center wheel pivot bearings jeweled, so it was considered a 'fully jeweled' watch. In quality watches, to minimize positional error, capstones were added to the lever and escape wheel bearings, making 21 jewels.
https://www.youtube.com/watch?v=1KMuz9f5viA
What The Jewels In Your Watch Movement Mean Subscribe: https://www.youtube.com/channel/UChLmvwbXUwBvV5LTMTamHeA http://TimesTicking.com http://facebook.com/L...
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