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The workgroup of a compact hydraulic excavator consists of the boom, dipper or arm, and attachment (e.g. auger, bucket or breaker). It is connected to the front of the excavator's house structure via a swing frame that allows the workgroup to be hydraulically pivoted left or right to achieve offset digging for trenching parallel with the tracks.
The 1960s saw the development of mini excavators, which were designed to fit into tight construction sites and urban environments. The YNB 300, developed by Yanmar Construction Company, was the world's first mini excavator. This compact machine was self-propelled and wheeled, making it highly maneuverable and suitable for urban construction ...
The Caterpillar 345C L is a large hydraulic excavator manufactured by Caterpillar Inc. The 345C L, with 345 hp (257 kW) of net flywheel power, is classified as a large excavator by Caterpillar. In Caterpillar's naming conventions, the last two digits indicate the excavator's weight in metric tonnes. The 345C L is not named after its horsepower.
John Deere's 50 Series tractors also offered a new power shift transmission, with 15 operating speeds. When tested in Nebraska, the 4850 was the most fuel efficient tractor ever tested over 60 hp (45 kW).; The following year, 1983 brought in the final two 50 Series tractors namely the 50 hp (37 kW) 1450 and 60 hp (45 kW) 1650.
For example, Caterpillar's smallest mini-excavator weighs 2,060 pounds (930 kg) and has 13 hp; [8] their largest model is the largest excavator available (developed and produced by the Orenstein & Koppel, Germany, until the takeover 2011 by Caterpillar, named »RH400«), the CAT 6090, which weighs in excess of 2,160,510 pounds (979,990 kg), has ...
U.S. President-elect Donald Trump refused on Tuesday to rule out using military or economic action to pursue acquisition of the Panama Canal and Greenland, part of a broader expansionist agenda he ...
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