* Motor power calculation of trolley drive (Indoor EOC) * Trolley drive(traversing) speed(min) : V = m/min * Trolley drive(traversing) speed(sec) : Vs = m/sec * Rated load : R = ton * Hook(attachment) weight : A = ton * Trolley self weight : T = ton (trolley frame & trolley drive & hoisting device & acc.) * Trolley wheel dia. : Dw = cm * Trolley wheel shaft dia. : Ds = cm * Mechanical efficiency..