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Track roller (bottom roller) for the Caterpillar D7E crawler bulldozer undercarriage assembly.
Complete track group for Caterpillar D7R II track-type tractor (bulldozer). Provides ground drive traction.
Idler shaft for the Caterpillar 390D large excavator undercarriage idler assembly. Supports the front idler wheel on the track frame.
Front bearing for the Caterpillar 390D excavator idler or swing assembly, adjacent in the parts sequence to the idler shaft 567-7859.