Sapphire window
Sapphire has higher flawing resistance comparing to quartz and is widely used as a material for windows of wristwatches. By making the most of its prosperity, OGURA is offering sapphire windows to various area.
Utilizing properties of pressure resistance and heat resistance, sapphire is used as a material of windows under circumstances of high temperature and high pressure, and also used under circumstances of chemical liquid and in gas atmosphere by making the most of its excellent chemical resistant property.
Sapphire is used as an sensor window under such conditions as quarts get damaged. For examples, it is used as a window of a coin-sensor to distinguish sliding coins.
Features
- Usable under conditions of high temperature and high pressure because of excellent pressure and heat resistance.
- Sapphire can be used under circumstances of chemical liquid and in gas atmosphere where quarts are badly affected.
- Sapphire can be used under such conditions as quarts gets damaged.
- Sapphire can be made to various shapes like stepped shaped and diagonally cut shape, etc.
Usage
- Window for high heat and high pressure.
- Window used under sever circumstances of chemical liquid and in gas atmosphere.
- Sensor window which contacts with measuring objects.
Treeing needle
This is a needle to for testing insulation of covering film material for electric cable.
Tree is destroyed trace with dendritic state within insulators, and deterioration by the tree is called treeing deterioration. The treeing needle is a testing needle used for evaluation test of treeing deterioration.
In 1979 version of ASTM (American Society for Testing Materials) our company name is listed at
standard D-3756.
Basic shape
Common specification: Outer diameterφD=1.0（0/-0.03）, angle of tapered tip endθ=30°,length-allowance（0/-0.5）
The material is steel
Standard specification
| Product number | SR（µm） | L（mm） |
|---|---|---|
| X-253-16 | 1 | 50 |
| X-253-3 | 3 | 50 |
| X-253-2 | 3 | 60 |
| X-253-1 | 5 | 50 |
| X-253-4 | 5 | 60 |
| X-253-5 | 10 | 50 |
| X-253-6 | 10 | 60 |
| X-253-7 | 20 | 50 |
| X-253-8 | 20 | 60 |
| X-253-9 | 40 | 50 |
| X-253-10 | 40 | 60 |
| X-253-11 | 100 | 50 |
| X-253-12 | 100 | 60 |
| X-253-13 | 200 | 50 |
| X-253-14 | 200 | 60 |
| X-297-1 | 500 | 50 |
| X-297-2 | 500 | 60 |
*Production with other sizes are possible. Please contact us.
Ruby ball
OGURA is providing high precision ruby balls conformed to AFBMA standard.
With excellent abrasion residence, chemical stability, and low friction coefficient, the ruby is used in various areas like an industry of analyzing instruments.
Sapphire of high purity is colorless and transparent. If visibility is required, red colored ruby with same property (excluding optical property) is applicable.
Available by OGURA from φ0.15mm at minimum.
Standard specification
| Grade | Diameter allowance（±） | Sphericity |
|---|---|---|
| 5 | 1.25 | 0.13 |
| 10 | 2.54 | 0.25 |
| 15 | 2.54 | 0.39 |
| 25 | 2.54 | 0.64 |
Conformed to International standard AFBMA Grade standard.
Unit（µm）
Other balls
Other than ruby ball, balls with high precision are available with us.
Used materials: sapphire, silicon nitride, alumina ceramics, zirconia ceramics
As for sapphire, OGURA is able to provide hemisphere shape. Please contact us.
