P = M * n / 9550            

P = Leistung in kW                            
M = Drehmoment in Nm
n = Drehzahl in 1/min

         
Ableitung:


P = F * s/t
P = F * v                    Umfangsgeschwindigkeit v = d * pie * n
                                                    v = 2 * r * pie * n

P = F * 2 * r * pie * n
P = 2 * pie * F * r * n       M = F * r in Nm

P = 2 * pie *   M   * n       Nm * 1/min = Nm/60s

P = (2*pie/60) * M * n        Nm/s = W     W/1000 = kW


P = (2*pie/(1000*60)) * M * n

P = 1,047*10^-4 * M * n           1,047*10^-4 = 1/9554 ~ 1/9550

P = M * n / 9550