What Are the Models and Specifications of Bulldozers?

[StCourtney]

Bulldozer models and specifications include the 130, 160, 220, 320, and 420 models. Introduction to Bulldozers: A bulldozer is a type of earthmoving machinery capable of excavating, transporting, and disposing of rock and soil, widely used in open-pit mines. Bulldozers can be divided into two types: crawler and wheeled. Crawler bulldozers have strong adhesion traction, low ground pressure, and strong climbing ability, but their travel speed is low. Wheeled bulldozers have high travel speeds, are flexible and maneuverable, have short operation cycle times, and are easy to transport and relocate, but their traction is small, making them suitable for situations requiring frequent site changes and fieldwork. Functions of Bulldozers: They are not only used for auxiliary work but can also be used for primary excavation tasks.

[LilahLee]

I've operated bulldozers in mines for twenty years, with the most common models being Komatsu's D series, such as the D65 or D85, boasting over 200 to 300+ horsepower and impressive earthmoving capacity, ideal for heavy-duty tasks. Caterpillar's D6 is also quite popular, with around 250 horsepower and 1.8-meter-wide tracks, offering excellent stability. Then there's the John Deere 450, a smaller machine with under 100 horsepower and a two-meter-wide blade, nimble but less powerful. In terms of specs, weight typically ranges from 20 to 40 tons, depending on whether it's a pure track or hybrid wheel-track design. For small-scale jobs, a bulldozing depth under half a meter is sufficient. Selection depends on the site—hard soil calls for heavier machines, while soft ground requires wide tracks to prevent sinking. Operating a bulldozer takes experience; high-horsepower models deliver strong pushing force but are more prone to overheating.

[LeGabriela]

From a technical perspective regarding bulldozer model specifications, the Caterpillar D7 is highly representative, equipped with a C9 diesel engine delivering 230 horsepower and a blade capacity of 15 cubic yards; the Komatsu D155A weighs 13 tons with 155 horsepower. Other brands like the Liebherr PR736 feature large capacities, ideal for quarry operations. Specifications cover engine output, maximum gradeability around 30 degrees, hydraulic system pressure control for thrust, and blade widths varying from 2.5 to over 4 meters. Different models suit varied scenarios: compact D4 units (approx. 80 HP) for site leveling, while large-scale models like the D11—designed for mining—boast over 850 HP with formidable thrust but higher costs. Selection also considers fuel efficiency and maintenance cycles, where efficient designs extend service life.

[StephenFitz]

I often use small bulldozers in the fields, with Caterpillar D3 or Komatsu D31P as my preferred models. They have 80-100 horsepower, are lightweight and flexible, with a blade width of two and a half meters, suitable for digging ditches or leveling land. The specifications are not complicated: weighing around ten tons for easy transport by tractor, simple depth adjustment of the blade, and low fuel consumption to save costs. Other models like domestic Liugong also offer cost-effective versions, starting from 60 horsepower with smaller earthmoving capacity but easy operation. These machines require minimal maintenance and are sufficient for regular land clearing. Although they work slower due to lower horsepower, they get the job done without issues.