Torque Torque| Possible tightening moments in Nm | ||||
| Pins | 6.9 | 8.8 | 10.9 | 12.9 |
| M 8 | 19,6 | 24,5 | 34,3 | 39,2 |
| M 10 | 39,2 | 44,1 | 63,8 | 78,5 |
| M 12 | 68,7 | 78,5 | 113,0 | 137,0 |
| M 14 | 108,0 | 128,0 | 181,0 | 216,0 |
Force, which sets at a lever arm, causes a rotating motion. The longer the lever arm and/or the more largely the force, all the more largely is the rotating force (torque).
| 1 foot·pound (ft·lbs) = 1,35 Nm 1 Nm = 0,74 ft·lbs |
M = F · r |
M |
M |
Pe·9550 |
M·n |
Pe·9550 |
| How to explain the number 9550? | |||||||
| P = F · v | We proceed from this formula. | ||||||
| The velocity v (per second) is substitued by the revolution per minute n multiplied by the circumference d ·  . The division by 60 results of the conversion of minute on second. | ||||||
| The diameter d is replaced by the double radius 2 · r. Then the torque M results from the Force multipied by the radius F · r. | ||||||
| If the power is in KW, the factor 1000 is added under the fraction stroke. 1000 · 60/2 ·  results in the conversion factor 9550 if one takes as 3.14 and rounds off accordingly. | ||||||
M2 = M1 · i |
M2 |
M2 |
