STR / Trapezoidal Screw
Model Number STR・STL・STW (Trapezoidal Screw) Materials STR・STL＝S45C
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Trapezoidal Screw STR・STL
| A model number | The screw part details (mm) | Standard norm axis length (mm) | Weight (kgf/m) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Pitch P | Outer diameter Dk | Effective aperture Do | Bottom diameter Dr | A lead angle d° | |||||
| STR 8 | 1.5 | 8 | 7.25 | 6.5 | 3°46' | 500 | 0.6 | ||
| STR(L)10 | 2 | 10 | 9.0 | 7.5 | 4°03' | 1000 | 2000 | 3000 | 0.6 |
| STR(L)12 | 2 | 12 | 11.0 | 9.5 | 3°19' | 1000 | 2000 | 3000 | 0.8 |
| STR(L)14 | 3 | 14 | 12.5 | 10.5 | 4°22' | 1000 | 2000 | 3000 | 1.0 |
| STR(L)16 | 3 | 16 | 14.5 | 12.5 | 3°46' | 1000 | 2000 | 3000 | 1.3 |
| STR(L)18 | 4 | 18 | 16.0 | 13.5 | 4°33' | 1000 | 2000 | 3000 | 1.6 |
| STR(L)20 | 4 | 20 | 18.0 | 15.5 | 4°03' | 1000 | 2000 | 3000 | 2.0 |
| STR(L)22 | 5 | 22 | 19.5 | 16.5 | 4°40' | 1000 | 2000 | 3000 | 2.3 |
| STR(L)25 | 5 | 25 | 22.5 | 19.5 | 4°03' | 1000 | 2000 | 3000 | 3.1 |
| STR(L)28 | 5 | 28 | 25.5 | 22.5 | 3°34' | 1000 | 2000 | 3000 | 4.0 |
| STR(L)32 | 6 | 32 | 29.0 | 25.5 | 3°46' | 1000 | 2000 | 3000 | 5.2 |
| STR(L)36 | 6 | 36 | 33.0 | 29.5 | 3°19' | 1000 | 2000 | 3000 | 6.7 |
| STR(L)40 | 6 | 40 | 37.0 | 33.5 | 2°57' | 1000 | 2000 | 3000 | 8.4 |
Trapezoidal Screw STW
| A model number | The screw part details (mm) | Normal length (mm) Full length L [Threaded end length L1] | Weight (kgf/m) | ||||
|---|---|---|---|---|---|---|---|
| Pitch P | Outer diameter Dk | Effective aperture Do | Bottom diameter Dr | A lead angle d° | |||
| STW10 | 2 | 10 | 9.0 | 7.5 | 4°03' | 1300 〔610〕 | 0.6 |
| STW12 | 2 | 12 | 11.0 | 9.5 | 3°19' | 0.8 | |
| STW14 | 3 | 14 | 12.5 | 10.5 | 4°22' | 1.0 | |
| STW16 | 3 | 16 | 14.5 | 12.5 | 3°46' | 1.3 | |
| STW18 | 4 | 18 | 16.0 | 13.5 | 4°33' | 1.6 | |
| STW20 | 4 | 20 | 18.0 | 15.5 | 4°03' | 2.0 | |
| STW22 | 5 | 22 | 19.5 | 16.5 | 4°40' | 2.3 | |
| STW25 | 5 | 25 | 22.5 | 19.5 | 4°03' | 3.1 | |
| STW28 | 5 | 28 | 25.5 | 22.5 | 3°34' | 4.0 | |
| STW32 | 6 | 32 | 29.0 | 25.5 | 3°46' | 5.2 | |