Service life is expressed by L10 in revolutions and for Lh in hours. For a specific ballscrew it is necessary to use its working parameters to calculate its life.
L10 = Service life (revolutions) Lh = Service life (Hours) Cam = Basic Dynamic Load (N) Car = Necesary Dinamic Load (N) Fm = Mean working load (N) Nm = Mean working speed (min -1) Fn = Utilisation facotr Fn = Screw operation/ Machine operation