A bulldozer is a heavy piece of earthmoving equipment which uses a front-mounted 'dozer' blade to push soil forward and create a level surface for construction sites, as mostly bulldozer is crawler or tracked type, so it is also named as track tractor. A modern bulldozer consists of a tracked chassis, protective driver cage like cabin or canopy, sometime with ROPS and FOPS, rear-mounted ripper claw to loosen densely-compacted materials like big rocks and a variety of front-mounted blades. Some militaries add armor plating to a standard bulldozer for even more protection and deconstruction power.

There are several theories concerning the origin of the word bulldozer. Technically, the word only applies to the front dozer blade, not the entire machine. Some sources suggest that the power and noise of the chassis suggested a restrained bull, while others point to the extreme medical practice of bull-dosing. What began as a term for a b dosing of medicine became slang for intimidating tactic. Whatever the original etymology, there is no doubt that a bulldozer can be a very intimidating sight when placed outside a condemned structure.

The earliest bulldozer models were little more than farming tractors equipped with straight front-mounted blades for rough landscaping and plowing. Earthmoving equipment manufacturers such as Case, Terex and International Harvester refined the basic design, curving the front blade for improved cutting power through hardened topsoil. Another modification was the addition of a rear-mounted 'ripper claw' for breaking up boulders and sections of roadway materials. Some bulldozer blades can also slice through trees or double as front-end loader buckets.

The most common place to find a bulldozer is on the new construction working site. The operator may use the rear-mounted ripper claw (usually with 1 or three teeth/shanks) to break up rocks, pavement or hardened ground. The next step is to set the front-mounted blade at a prescribed depth and literally push the loosened soil forward. As bulldozers have excellent ground hold and a torque divider designed to convert the engine s power into dragging ability, so a bulldozer is able to use its own weight to push very heavy things and remove obstacles that are stuck in the ground. Tracks similar to those used on military tanks allow the bulldozer to remain stable on sandy or muddy soil, recently, LGP bulldozers (low ground pressure bulldozer) and marsh type bulldozers are also developed for special applications, these tow kinds of bulldozers come with specially designed track shoes, wider with lower ground pressure than normal standard dozers. Eventually the entire site should be level enough for construction to begin. A bulldozer is not usually involved in the more subtle aspects of site preparation, but occasionally it may be used for rough deconstruction or as an auxiliary front-end loader.

Sinoway offer bulldozers with either Caterpillar or Komatsu technology, from 80 horse power small bulldozer to 430 horse power mining bulldozer (which is equivalent to CAT D9 bulldozer).