High-Quality 5-1/2″ Cone Crusher Parts. When it comes to 5-1/2″ Cone Crusher Parts, Sinco Machinery has been crushing the market for decades, which include Mantle, Bowl liner, Mainshaft bushing, Frame bushing, Socket Liner, Transmission shaft bushing, Upper thrust plate, Eccentric shaft, Pinion gear, Bever gear, Eccentric bushing, …