... downand shockproof.1.2 Theconnecting shaft of prime mover, reducer and operation device must be coaxialinstallation. 1.3 Thediameter ... shaft is H6, the holes of fittings(such as couplings, belt-pulley, sprocket wheel and so on) must properly matethe ... . Notices of usage2.1Before using, please check carefully whether the reducer model, distance,ratio, input connecting method, output shaft structure, ...