The structural design of the pulley is mainly based on the reference diameter of the pulley to select the shape of the structure, according to the type of cut with the wheel to determine the size of the outer groove. Common V pulley structure with solid, web, orifice, wheel type.
Solid pulley, when the reference diameter is less than or equal to 2.5 times the diameter of the axis used.
Web pulley, when the reference diameter is less than or equal to 300 mm.
Orifice plate pulley, in the orifice plate inside and outside the diameter difference is greater than or equal to 100 mm.
Spoke pulley, when the reference diameter is greater than 300 mm.