Abstract: A steering axle assembly includes a wheel end having a knuckle section comprising a first arm and a second arm each extending therefrom. The steering axle assembly includes an axle beam having a connecting end. A pin is disposed in respective bores of the first and second arms and of the connecting end. The steering axle assembly includes a self-lubricated bearing system that including a first tubular bushing, a second tubular busing and an annular thrust bearing. The self-lubricated bearing system has an adequate amount of lubricant therein at a beginning of life state and the amount of the lubricant being sufficient for an end of life state defined by at least one million miles of operation of the heavy duty truck, without replenishment of the lubricant.

Abstract: A conveyor chain including a chain pin having an exterior surface; a bearing having a generally tubular body portion having an exterior surface and an interior surface, the chain pin disposed in the generally tubular body portion of the bearing so that the interior surface of the bearing surrounds the exterior surface of the chain pin; and a low friction liner material secured to a surface selected from the exterior surface of said chain pin, the interior surface of the bearing, the exterior surface of the bearing, or combinations thereof.

Abstract: A conveyor chain including a chain pin having an exterior surface; a bearing having a generally tubular body portion having an exterior surface and an interior surface, the chain pin disposed in the generally tubular body portion of the bearing so that the interior surface of the bearing surrounds the exterior surface of the chain pin; and a low friction liner material secured to a surface selected from the exterior surface of said chain pin, the interior surface of the bearing, the exterior surface of the bearing, or combinations thereof.