Eisen, Japan
Eisen PLB Series (fixed type) Plain Gauge
Made in Japan
Manufacturer: Eisen Co., Ltd.
Model: PLB Series
Series Details
Ball gauge
The ball shape makes it easy to insert and allows for efficient measurement. In addition, while normal plug gauges can scratch the inner diameter of the workpiece at the chamfered part, the ball shape makes it less likely to scratch the workpiece, making it ideal for measuring non-metallic parts such as resin, aluminum, and brass.
Features
- – Accurate measurements are possible regardless of the angle at which the gauge is inserted.
- – The gauge section is made of cemented carbide, making it highly resistant to wear.
Shape examples
Precision and specifications
| Nominal size mm | tolerance |
|---|---|
| 0.8 or more … 20 or less | ± 1. |
| Over 20 … 30 or less | ± 2. |
- *Special sizes are also available.
Example of plug gauge shape accuracy (H7 tolerance)
| Nominal size mm | Plug Gauge Tolerance | |
|---|---|---|
| For H7 | ||
| Street side | Stop side | |
| More than 3 … 6 or less | ±3.2μm ±0.8μm | ±13.2μm ±10.8μm |
| Over 6 … 10 or less | ±3.2μm ±0.8μm | ±16.2μm ±13.8μm |
| Over 10 … 18 or less | ±4.0μm ±1.0μm | ±19.5μm ±16.5μm |
| Over 18 … 25 or less | ±5.0μm ±1.0μm | ±23μm ±19μm |
*Plug gauge tolerances are based on JIS B 7420 limit plain gauge.
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