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Private company

Namiki Precision Jewel

Namiki Precision Jewel Co., Ltd. (並木精密宝石株式会社, Namiki Seimitu Houseki Kabushiki-gaisha) is a Japanese component manufacturing company based in Tokyo, Japan. 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 precision components.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Aug 28, 1953Founded1

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Namiki Precision Jewel Co., Ltd. (並木精密宝石株式会社, Namiki Seimitu Houseki Kabushiki-gaisha) is a Japanese component manufacturing company based in Tokyo, Japan. 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 precision components.2

Products and brands

Jewel Parts

Namiki supplies industrial jewel parts such as jewel bearings, phonograph diamond styli and cantilevers, watch exterior parts, and sapphire wafers which are made of synthetic sapphire which is produced in-house. They have developed sapphire step wafers, with a step height of 0.22 nanometres, which are expected to become the height standard for scanning probe microscopy (SPM), plus Immobilization plates for observing bio-materials.

DC Motors

Namiki supplies DC coreless motors, DC brushless motors and geared motors. In 2004, they developed the world's smallest micro geared motor (diameter 1.5mm) for use in medical equipment, (catheters, endoscopes) and Micro-robots.

Diaphragm Pumps

Namiki supplies diaphragm liquid and air pumps used in inkjet printers and biotechnology devices including incubation systems.

Vibration Components

Namiki vibration motors and multi-functional vibration speakers combining speaker, receiver, and vibration functions, are used in mobile phones.

From Wikipedia’s article on Namiki Precision Jewel Co, shared under CC BY-SA 4.0.3

Timeline

  1. Aug 28, 1953Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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