Q:  How does a track dozer differ from a bulldozer?  What does it do?

A:  A track dozer is a continuous-tracked tractor fitted with a dozer blade.  The term "bulldozer" is often generically used to mean any heavy equipment (sometimes a loader and sometimes an excavator). The dozer usually uses front attachments – or blades - to push materials – i.e. soil, trees, construction materials, debris or structural remains. The tracks on the dozer are fitted with grousers (or cleats in the track) for traction. The machine's mobility on rough terrain is due to its tracks which evenly distribute its weight.

On the back of a track dozer you will usually find a ripper.  A “ripper” is claw-like attachment can have one to six teeth and is used to break up materials and loosen compacted soil.  Some dozers are fitted with a “drum” or winch to hook up to more stubborn debris (such as a tree stump).

Track dozers are used for a variety of jobs that include earthmoving deforestation, road carving and site prep (preparing an area for construction). They are found on large and small construction sites. In fact, there are smaller dozers that are sometimes referred to as calf dozers (no kidding!) and can be used for snow removal, etc.

These are very versatile machines as dozers have also been used in military operations.  Armored bulldozers, where the driver is protected from enemy fire, have operated in battle zones clearing roads and demolishing structures since before World War II. 

Michael Crouch, Vice President Operations, Volvo Rents