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Ruby jewel bearings used for a balance wheel in a mechanical watch movement Cross-section of a jewel bearing in a mechanical watch. This type of donut-shaped bearing (red) is called a hole jewel, used for most of the ordinary wheels in the gear train. It is usually made of synthetic sapphire or ruby, press-fit into a hole in the movement's ...
The company was founded in 1939 as a manufacturer of synthetic sapphire jewel bearings for electrical measuring instruments. Namiki supplies industrial jewel parts, dc coreless and dc brushless motors , multi-functional vibration components, precision gearheads, medical equipment , watch exterior parts, Analog Record-related Products and other ...
Adamant Namiki uses integrated manufacturing, handling its products from the raw material, to processing, through to polishing. Industrial jewels, such as diamond, sapphire, and ruby, are used for jewel bearings, sapphire substrates, [4] [5] exterior watch parts, semiconductor wire bonding capillaries, nozzles, LTCC [6] (Co-fired ceramic) and so on.
Started sales of jewel bearings for watches and clocks. 1959 - The Company Changed name to Adamant Kogyo Co., Ltd. 1960 - Began to manufacture jewelled bearings for watches. 1967 - Akita Factory was set up at Yuzawa City, Akita. 1969 - Started manufacturing and sales of component parts for medical equipment.
Jewel bearing and capstone used in balance wheel pivot Ordinary 'hole jewel' bearing. Jewel bearings were invented and introduced in watches by Nicolas Fatio (or Facio) de Duillier and Pierre and Jacob Debaufre around 1702 [13] [14] to reduce friction. They did not become widely used until the mid-19th century.
The company was founded in 1939 as Namiki Seisakusho to make jewel bearings for electric meters. In 1953, the company was reorganized as Namiki Precision Jewel Co., Ltd. In 1957, Adamant Shoji Co., Ltd., was spun off from Namiki Precision Jewel Co., Ltd., in order to segregate sales by source.
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Jewel bearing of a balance wheel, supported by a lyre-shaped spring. The Incabloc shock protection system is the trade name for a spring-loaded mounting system for the jewel bearings that support the balance wheel in a mechanical watch, to protect the wheel's delicate pivots from damage in the event of physical shock, such as if the watch is dropped.
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