Different from the conventional flat keyway, this type of sprocket keyway has a taper at the bottom. The actual function of the cone key is to connect one part with another part to achieve the purpose of synergy in motion or effect. The taper key has a greater bearing capacity than other connection methods, and can better resist shear and bending forces to ensure the stability and reliability of the parts. The size of the standard taper keyway directly affects the connection quality and work efficiency of the parts.