Jewel Bearings

High precision Durability Low Cost

High Precision, high quality products with 50-year experience, to the world

It is one of the processing technologies which we have cultivated since the company inauguration. The product is used not only for wristwatch but also is applied to bearing for measuring instrument and precision mechanical equipment. Also it is produced under a consistent quality management system from material selection to processing. The technology and know-how based on the 50-year production experience deliver high reliability to every customer even now, while raw material changed from genuine stones to ceramics.

Applications

Wrist watches

Measuring instruments

Vibration motors

Compact fan motors

Technical information

Specification in details

(mm) Max Min Accuracy
OutsideΦD 1.5 0.6 ±0.006
HoleΦd 1.0 0.07 ±0.006
Thickness t 0.4 0.1 ±0.020
(mm) Max Min Accuracy
OutsideΦD 1.5 0.6 ±0.006
HoleΦd 1.0 0.07 ±0.006
Thickness t 0.4 0.1 ±0.020
(mm) Max Min Accuracy
OutsideΦD 0.9 0.7 ±0.006
HoleΦd 0.11 0.07 ±0.006
Thickness t 0.25 0.17 ±0.020

About Ceramic material

For more details, please refer to the data below.