Straightening machines with roller diameters ranging from 5mm to 250mm for strips and material thicknesses from 0.05mm to 50mm for sheets.
To achieve an optimum levelling result, the minimum number of rollers for the standard straightening machines is 9 and for precision levellers it is 19/21 rollers.
| Type | Roller diameter | Strip width mm | Number of rollers | Strip widthn Standard | Support | |
|---|---|---|---|---|---|---|
| mm | min. | max. | piece | mm | ||
| 10 | 10 | 0,1 | 0,5 | 19 | 120, 220 | Support rollers |
| 12 | 12 | 0,2 | 1 | 19 | 120, 220 | Support rollers |
| 15 | 15 | 0,3 | 1,2 | 19 | 120, 220 | Support rollers |
| 18 | 18 | 0,3 | 2 | 9 / 19 | 160, 320, 420 | Support rollers |
| 24 | 24 | 0,4 | 3 | 9 / 21 | 220, 420, 520 | Support rollers |
| 30 | 30 | 0,4 | 4 | 9 / 21 | 220, 420, 620, 820, 1020, 1320 | Support rollers/Back-up rollers |
| 40 | 40 | 0,5 | 5 | 9 / 21 | 220, 420, 620, 820, 1020, 1320, 1520 | Support rollers/Back-up rollers |
| 50 | 50 | 0,6 | 7 | 9 / 21 | 220, 420, 620, 820, 1020, 1520, 2020 | Support rollers/Back-up rollers |
| 65 | 65 | 1 | 10 | 9 / 15 / 21 | 420, 620, 820, 1020, 1520, 2020 | Support rollers/Back-up rollers |
| 80 | 80 | 1,5 | 18 | 9 / 15 / 21 | 420, 620, 820, 1020, 1520, 2020 | Support rollers/Back-up rollers |
| 100 | 100 | 2 | 26 | 9 / 15 / 21 | 420, 620, 820, 1020, 1520, 2020 | Back-up rollers |
| 130 | 130 | 3 | 38 | 9 / 15 / 21 | 1020, 1520, 2020, 2520 | Back-up rollers |
| 160 | 160 | 5 | 56 | 9 / 15 / 21 | 1020, 1520, 2020, 2520 | Back-up rollers |
| 200 | 200 | 3 | 65 | 9 / 15 / 21 | 1020, 1520, 2020, 2520 | Back-up rollers |