2015-08-21
350
Standard factors of safety [S] for PR Roller chains
| n1, rpm | Chain pitch t, mm | |||||||
| 12.7 | 15.875 | 19.05 | 25.4 | 31.75 | 38.1 | 44.45 | 50.8 | |
| 7.1 | 7.2 | 7.2 | 7.3 | 7.4 | 7.5 | 7.6 | 7.6 | |
| 7.3 | 7.4 | 7.5 | 7.6 | 7.8 | 8.0 | 8.1 | 8.3 | |
| 7.9 | 8.2 | 8.4 | 8.9 | 9.4 | 9.8 | 10.3 | 10.8 | |
| 8.5 | 8.9 | 9.4 | 10.2 | 11.0 | 11.8 | 12.5 | - | |
| 9.3 | 10.0 | 10.7 | 12.0 | 13.0 | 14.0 | - | - | |
| 10.0 | 10.8 | 11.7 | 13.3 | 15.0 | - | - | - | |
| 10.6 | 11.6 | 12.7 | 14.5 | - | - | - | - |
In our case:
Fbr = 88.5 kN, K = 1.2, [S] = 7.9
.
Condition is satisfied.
