Bulldozers, also known as dozers, are large and powerful machines that use a wide metal blade to push a variety of materials, including earth, sand, snow, brush, and debris. With the heavy blade positioned at the front, dozers also often have a claw-like ripper at their rear, which can break up dense material so that it becomes easier to transport. Dozers are usually utilized for land clearing, digging, and leveling, and the most common industries that utilize dozers are construction, agriculture, forestry, landscaping, plowing, mining, and military. New and used dozers for sale on Equipment Trader are manufactured by companies including Case, Caterpillar, Deere, Dresser, Komatsu, Liebherr, Mitsubishi, and New Holland.
Dozers are typically crawler tractors that move via continuous tracks, which aid in the distribution of weight and allow dozers to move over soft or wet ground without sinking. Less common are wheeled dozers, which are even larger machines that navigate via hydraulic articulated steering systems and often lack rear rippers. Dozers are most likely to have standard undercarriages that are used for construction and landscaping, but may also have heavy duty undercarriages that are more durable and ideal for use on rough terrain worksites. There are also variations in dozer blades, which can range in width from 8 to 16 feet, and may be straight or curved. Blade are often straight, however they can also be positioned at an angle to push material to one side instead of straight ahead.
Before using a dozer, it is vitally important to be well-trained in all safety and operational procedures, including relevant lockout, blockout, and tagout policies. Before starting the engine, a dozer operator must be seated in the operator's seat with the seatbelt securely fastened and must ensure that the dozer's immediate path is free from objects, obstacles, and other workers or vehicles. Dozer operators should use extreme caution when close to trenches, excavations, and other steep inclines or sudden drop-offs, and should avoid using the dozer to clear any object or structure that is taller than the dozer itself. When shutting a dozer down, be sure to position the machine on a level surface and lower the blade and any attachments to the ground.