Uniform one-sided wear of the finger. Corresponds to the wear of the sleeve at the point of contact with the finger. This is called wear of the hinge from the inside and often causes repair of the running systems or replacement of its components.
The friction of the finger and the inner surface of the sleeve at the point of contact.
Too free movement of the finger and the sleeve in the hinge can lead to the so-called "curvature" of the chain. The increased chain pitch causes the bushing to beat against the tooth profile before it comes into contact with its base. This accelerates the wear of the track bushings and the teeth of the drive wheel. The risk of a broken finger. Strong friction between the links and the edges of the roller due to the forced need to maintain the alignment of the chain.
The crack begins on the outer surface and quickly spreads throughout the finger. It occurs more often in tracks with liquid lubrication of hinges due to the presence of lubrication channels that weaken the cross-section of the finger.
The separation of the calf, the unexpected descent of the caterpillar from the machine.
To eliminate or reduce the influence of controlled factors, especially the possibility of non-removable and compacted materials (stones, etc.) getting into the contact zone between the caterpillar bushings and the drive wheel elements, use the least possible shoe width.