· V-belt pulleys are generally cast iron (good casting performance), and timing belt pulleys are generally cast steel or aluminum alloy.

· High centering accuracy, improved rotation accuracy;

· Parts can easily move on the shaft before locking and positioning, and it is equivalent to interference fit after locking;

· The load is evenly distributed, no need to locate the shaft shoulder and it is not easy to cause axial movement;

· Easy assembly, disassembly and replacement, reducing maintenance costs;

· Compact structure, can be connected with non-weldable materials, such as connection with aluminum parts;

· Some cone sleeves have realized standardized production, and the cost is low.

· Widely used in transmission structures, such as gears, pulleys, sprockets, synchronous pulleys, etc.