The invention discloses a crawler type bearing for a ball mill. The structure of the bearing is similar to the structure of a sliding tile, but movement joint between a shaft and the bearing is in a rotating mode. In the technical scheme of the crawler type bearing, two rows of roller chains are installed between the inner ring and the outer ring of the crawler type bearing and arranged around the outer ring and a paved path in a closed ring shape; the inner ring is an integrated circular ring body, and the outer surface of the inner ring are provided with two inner-ring roller paths; the outer ring is an arc-shaped body only having 1/3 circumference, and the inner surface of the outer ring is provided with two outer-ring roller paths; and the outer ring is supported by a paved path support. The crawler type bearing is convenient to install and can be maintained just like a sliding bearing, and also has the advantages of small rolling frication and energy saving just like a rolling bearing, and saves power by 15%-20%.