* Bridge drive(travelling) speed : V = m/min * Rated load : R = ton * Hook(attachment) weight : A= ton * Trolley self weight : T= ton (trolley frame & trolley drive & hoisting device & acc.) * Bridge self weight : B= ton (girder & saddle(rocker) & bridge drive & acc.) * Bridge span : S = cm * Hook(attachment) approach : Ab = cm (Bridge wheel & hook(attachment) distance) * Bridge rail size : rail..
