FINAL REDUCTION GEAR IN CRAWLER VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a final reduction gear for achieving compactness and low cost without projecting to the outside of a crawler belt, even if mounting a narrow crawler belt. SOLUTION: A cross roller bearing 12 for rotatably supporting a sprocket hub 13 is disposed in one row. An outer race and/or inner race of the cross roller bearing 12 are integrally constituted with components 11d, 11e and 13 of the final reduction gear 10. The final reduction gear 10 is desirably an inner planetary type final reduction gear. A length T from a width center of the cross roller bearing 12 up to an outside end face of the final reduction gear 10 is made substantially same as a length L from a width center of a link 91 of the crawler belt 90 up to an outside end face of the link 91 or below the length L.