A bulldozer is a crawler -type tractor with a front pusher that runs on two endless tracks with low ground pressure. Dozers have the ability to dig hard soil, compact and excavate, as well as level. The tracks give them good ground holding capability and mobility through very rough terrain. The wide tracks p distribute the bulldozer's weight over a large area preventing it from sinking in sandy or muddy ground. Top dozer manufacturers are Caterpillar, John Deere, Komatsu, Case, and Bobcat. IronSearch is your source to find used dozer model including Caterpillar D8T; D6NLGP; D6TXL and D6NLGP Dozers. Also at IronSearch, you’ll find Iron Appraiser. Whether you’re buying or selling, IronAppraiser.com is your used equipment blue book for valuations of dozers.