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The Komatsu D575A is a 1,150 horsepower (860 kW) tractor crawler produced in a 'SR' or Super Ripper bulldozer/ripper configuration, or as a dedicated bulldozer in the form of the 'SD' or Super Dozer. [1] Both models can move 90 cubic yards (69 m 3) of material per pass using the standard blade.
The Komatsu D475A is the second largest bulldozer in the Komatsu line after the D575A, the world's largest production bulldozer. [1] The current version is the 248,240 pounds (112,600 kg), 899 horsepower (670 kW) D475A-8 Tier 4. [ 2 ]
Heemeyer used this armor-plated Komatsu D355A bulldozer to destroy 13 buildings in Granby, Colorado. The bulldozer was a modified Komatsu D355A, [3] which he referred to as the "MK Tank" (or "Marv's Komatsu Tank" [8]) in audio recordings, fitted with makeshift composite armor plating covering the cabin, engine, and parts of the tracks. Three ...
Komatsu Ltd. (株式会社小松製作所, Kabushiki-gaisha Komatsu Seisakusho) or Komatsu (コマツ) (TYO: 6301) is a Japanese multinational corporation that manufactures construction, mining, forestry and military heavy equipment, as well as diesel engines and industrial equipment like press machines, lasers and thermoelectric generators.
The Caterpillar D11 can be distinguished from the Komatsu D475 by the elevated drive sprocket, or "High Drive" system, which results in a triangular, rather than oval, shaped track. The updated version of the Komatsu, the D575A , is the world's largest production bulldozer at 168 short tons (152 t) and 1,150 hp (860 kW). [ 5 ]
Sharpness refers to the ability of a blade, point, or cutting implement to cut through materials with minimal force, and can more specifically be defined as the capacity of a surface to initiate the cut. [1] Sharpness depends on factors such as the edge angle, edge width, and the fineness of the cutting edge, and is aided by material hardness.
Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
Its most common use is in the measurement of cutting speed (surface speed) in machining. It is a unit of velocity that describes how fast the cutting edge of the cutting tool travels. It correlates directly to the machinability of the workpiece material and the hardness of the cutting tool material.