Eisen, Japan
Eisen TW Series Three-wire Gauge
Made in Japan
Manufacturer: Eisen Co., Ltd.
Model: TW Series
About the Series
The three-wire gauge pin can be removed from the chain.Precision and specifications
| Part number | tolerance | Roundness and diameter variation | Mutual difference | Surface roughness | Hardness |
|---|---|---|---|---|---|
| TW (steel) | ±2.0μm | 0.5μm | 0.5μm | 0.05μm Ra | Over 58 HRC |
| TWW (Carbide) | 90.6 HRA | ||||
| TWZ (zirconia ceramics) | 89 HRA |
(Inspection report included)
How to calculate the effective diameter
Series Details
Three-wire gauge TW series
| Set number | Nominal needle diameter (mm) | Applicable screw type and pitch or number of threads | Price (yen) | ||
|---|---|---|---|---|---|
| Metric threads | Unified thread | Parallel pipe thread | |||
| Pitch mm | Number of mountains | Number of mountains | |||
| TW-01 TW-02 TW-03 | 0.1155 0.1443 0.1732 | 0.2 0.25 0.3 | – – 80 | — | 20,000 |
| TW-04 TW-05 TW-06 | 0.2021 0.2309 0.2598 | 0.35 0.4 0.45 | 72 64 56 | — | |
| TW-07 TW-08 TW-09 | 0.2887 0.3464 0.4330 | 0.5 0.6 0.75 | 48 44,40 – | — | |
| TW-10 TW-11 TW-12 | 0.5196 0.5774 0.7217 | – 1 1.25 | 28 24 20 | 28 – – | |
| TW-13 TW-14 TW-15 | 0.7954 0.8949 1.0227 | – 1.5 1.75 | 18 16 14 | – – 14 | |
| TW-16 TW-17 TW-18 | 1.1547 1.1932 1.3016 | 2 – – | 13 12 11 | — 11 | |
| TW-19 TW-20 TW-21 | 1.4434 1.5908 1.7897 | 2.5 – 3 | 10 9 8 | — | |
| TW-22 TW-23 TW-24 | 2.0454 2.3863 2.5981 | 3.5 4 4.5 | 7 6 – | — | |
| TW-25 TW-26 TW-27 | 2.8868 3.1817 3.5794 | 5 5.5 – | 5 4 1/2 4 | — | |
| TW-28 TW-29 TW-30 | 0.4041 0.4619 0.7536 | 0.7 0.8 – | 36 32 – | – 19 | |
| TW-31 | 3.4641 | 6 | – | – | |
| Set number | combination | price |
| TW – TS | TW-01 to TW-31 | 589,000 |
Carbide Three-wire Gauge TWW Series
| Set number | Nominal needle diameter (mm) | Applicable screw type and pitch or number of threads | Price (yen) | ||
|---|---|---|---|---|---|
| Metric threads | Unified thread | Parallel pipe thread | |||
| Pitch mm | Number of mountains | Number of mountains | |||
| TWW-04 TWW-05 TWW-06 | 0.2021 0.2309 0.2598 | 0.35 0.4 0.45 | 72 64 56 | — | 40,000 |
| TWW-07 TWW-08 TWW-09 | 0.2887 0.3464 0.4330 | 0.5 0.6 0.75 | 48 44,40 – | — | |
| TWW-10 TWW-11 TWW-12 | 0.5196 0.5774 0.7217 | – 1 1.25 | 28 24 20 | 28 – – | |
| TWW-13 TWW-14 TWW-15 | 0.7954 0.8949 1.0227 | – 1.5 1.75 | 18 16 14 | – – 14 | |
| TWW-16 TWW-17 TWW-18 | 1.1547 1.1932 1.3016 | 2 – – | 13 12 11 | — 11 | |
| TWW-19 TWW-20 TWW-21 | 1.4434 1.5908 1.7897 | 2.5 – 3 | 10 9 8 | — | |
| TWW-22 TWW-23 TWW-24 | 2.0454 2.3863 2.5981 | 3.5 4 4.5 | 7 6 – | — | |
| TWW-25 TWW-26 TWW-27 | 2.8868 3.1817 3.5794 | 5 5.5 – | 5 4 1/2 4 | — | |
| TWW-28 TWW-29 TWW-30 | 0.4041 0.4619 0.7536 | 0.7 0.8 – | 36 32 – | – 19 | |
Zirconia ceramic three-wire gauge TWZ series
| Set number | Nominal needle diameter (mm) | Applicable screw type and pitch or number of threads | Price (yen) | ||
|---|---|---|---|---|---|
| Metric threads | Unified thread | Parallel pipe thread | |||
| Pitch mm | Number of mountains | Number of mountains | |||
| TWZ-04 TWZ-05 TWZ-06 | 0.2021 0.2309 0.2598 | 0.35 0.4 0.45 | 72 64 56 | — | 40,000 |
| TWZ-07 TWZ-08 TWZ-09 | 0.2887 0.3464 0.4330 | 0.5 0.6 0.75 | 48 44,40 – | — | |
| TWZ-10 TWZ-11 TWZ-12 | 0.5196 0.5774 0.7217 | – 1 1.25 | 28 24 20 | 28 – – | |
| TWZ-13 TWZ-14 TWZ-15 | 0.7954 0.8949 1.0227 | – 1.5 1.75 | 18 16 14 | – – 14 | |
| TWZ-16 TWZ-17 TWZ-18 | 1.1547 1.1932 1.3016 | 2 – – | 13 12 11 | — 11 | |
| TWZ-19 TWZ-20 TWZ-21 | 1.4434 1.5908 1.7897 | 2.5 – 3 | 10 9 8 | — | |
| TWZ-22 TWZ-23 TWZ-24 | 2.0454 2.3863 2.5981 | 3.5 4 4.5 | 7 6 – | — | |
| TWZ-25 TWZ-26 TWZ-27 | 2.8868 3.1817 3.5794 | 5 5.5 – | 5 4 1/2 4 | — | |
| TWZ-28 TWZ-29 TWZ-30 | 0.4041 0.4619 0.7536 | 0.7 0.8 – | 36 32 – | – 19 | |
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