... tube, and improve the bold the strength of the shaft, and to reduce the blade grain for the axis of the bending deformation;4, ... , low noise, transmission torque;7, driven pulley USES the steel plate molding design, a cast iron pulley toughness, ... the incentive to gasoline engine intertillage machine operation, you can save the cost 500 yuan, and from the motor power limitations, but in the field in the ...