Abstract
The largest bulldozer in the world, the D575A Super Dozer, has been developed and achieved 70-100% more dozing production and 5-15% less overall cost per production than the largest conventional bulldozer in the large surface mine. The new design concept of the Super Dozer has enabled us to get such high production and cost performance. First, the new concept dozing blade, the Super Blade, improves dozing efficiency because it reduces soil resistance and unbalance of ground pressure distribution while dozing, thus producing more dozing production per traction force. Second, the machine design is optimized for dozing application instead of compromising to take a balance between dozing and ripping application, where each requirement is usually incompatible. The D575A Super Dozers are now operated at surface coal mines in North America. High dozing capability and productivity are highly appreciated by customers.
