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NEMA (National Electrical Manufacturers Association) contactors and motor starters are rated by sizes. These sizes are grouped by rated current and power . [ 1 ] [ 2 ]
Excavator buckets are made of solid steel and generally present teeth protruding from the cutting edge, to disrupt hard material and avoid wear-and-tear of the bucket. Subsets of the excavator bucket are: the ditching bucket, trenching bucket, A ditching bucket is a wider bucket with no teeth, 5–6 feet (1.52–1.83 m) used for excavating ...
The Bagger 288 bucket-wheel excavator, beside a Caterpillar Inc. model 824H front end loader for size comparison The excavating head itself is 21.6 m (70 ft 10 in) in diameter and has 18 buckets each holding 6.6 cubic metres (8.6 cu yd) of overburden.
The bucket-wheel dimensions are 11.2 m (37 ft) in diameter with 14 buckets. [7] It is able to excavate a total capacity that can range between 4900 and 7000 m 3 /h with a digging force of around 100 kN/m. [7] [8] The bucket wheel excavator reaches 30 m digging height with a cutting depth of -10 meters. [5]
The length improves axial weight distribution and bucket capacity can be enhanced. The two-part construction with central articulation helps in tracking and maneuverability. In mining, there is a limitation for shifting heavy equipment, and sometimes, an LHD has to be shifted through a shaft while dismantled. [1]
The bucket-wheel itself is over 21.3 metres (70 feet) in diameter with 18 buckets, each of which can hold over 15 cubic metres (530 cubic feet) of material. It can move 240,000 m 3 (8,500,000 cu ft) [ 6 ] of soil per day, weighing around 218,880 tonnes (482,550,000 lb), the same as Bagger 288.
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