بكرات مسار من نوع النير:STO
| تعيين | الأبعاد (مم) | معدلات التحميل الأساسية | ||||
| D | d | C | B | دين. كر كيلو نيوتن | stat. Cor KN | |
| STO 6 ZZ | 19 | 6 | 13.8 | 14 | 4.12 | 4.55 |
| STO 8 ZZ | 24 | 8 | 13.8 | 14 | 5.68 | 5.88 |
| STO 10 ZZ | 30 | 10 | 15.8 | 16 | 9.70 | 9.67 |
| STO 12 ZZ | 32 | 12 | 15.8 | 16 | 10.40 | 10.97 |
| STO 15 ZZ | 35 | 15 | 15.8 | 16 | 12.30 | 14.31 |
| STO 17 ZZ | 40 | 17 | 19.8 | 20 | 17.54 | 14.30 |
| STO 20 ZZ | 47 | 20 | 19.8 | 20 | 19.00 | 26.00 |
| STO 25 ZZ | 52 | 25 | 19.8 | 20 | 20.70 | 28.40 |
| STO 30 ZZ | 62 | 30 | 24.8 | 25 | 30.40 | 45.30 |
| STO 35 ZZ | 72 | 35 | 24.8 | 25 | 32.34 | 50.67 |
| STO 40 ZZ | 80 | 40 | 25.8 | 26 | 35.70 | 61.10 |
| STO 45 ZZ | 85 | 45 | 25.8 | 26 | 37.34 | 66.35 |
| STO 50 ZZ | 90 | 50 | 25.8 | 26 | 38.91 | 71.64 |
