A short pitch, high speed track of high efficiency and low noise level. In one embodiment the major wear surfaces are on an integral shoe structure. In a second embodiment drive lugs, guide rails and roller engaging surfaces are formed on a separate replaceable part releasably secured to a shoe part. In a third embodiment the drive lugs and the guide rails are formed on a separate replacement part releasably secured to a shoe part.
An improved articulate chain (10) including pivotally interconnected sections (12,14,16) of spaced, coacting links (18,20,22) having the chain driving members (54) intermediate the pivot connections (58,60) to reduce the chain loads thereon. The links (18,20,22) are locked together in a common plane (56) by integral externally splined projections (82) extending therefrom into the internally splined drive bushing (96) to resist torque loads and increase the structural integrity of the chain (10). The links (18,20,22) are releasably coupled together to permit expeditious disassembly and reassembly thereof for servicing.
