Metallenes Kernstück einer Gummiraupenkette.

摘要

A metallic core (30) for a rubber track includes wing portions (31) to be embedded in an elastic member of the rubber track, an engaging portion (32) at the center of the core for engaging a driving sprocket , and a pair of protrusions (33) provided on both sides of the engaging portion and projecting from the inner circumferential surface of the rubber track. Each of the protrusions (33) is provided with at least one extension (36) extending in the longitudinal direction of the rubber track, and the top surfaces (38,37) at the extension and at the center of the protrusion for rolling an idler (34) thereon are connected to each other with a surface (39) gently inclined downward toward the center of the protrusion, thereby maintaining idlers rolling on the metallic cores of a rubber track at a substantially constant level without upward and downward movements.