Link Bush: Metallurgical Materials, Precision Fits, Wear Control, and Reliable Linkage Performance
A link bush, also called a link bushing, linkage bush, suspension bushing, connecting-link bush, or clevis bushing, is a plain-bearing sleeve installed between a pin and a moving link. It controls clearance, carries oscillating load, protects the parent link, and provides a replaceable wear surface. Its performance depends on metallurgy, hardness, counterface finish, grease, fit, geometry, contamination control, and inspection evidence.