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A bucket-wheel excavator (BWE) is a large heavy equipment machine used in surface mining. ... (13,000,000 cu ft) per day have been recorded. [4]
The Type SRs 8000 or less commonly known as the SRs 8000-class, [6] is a family of bucket-wheel excavators known for being one of the largest terrestrial vehicles ever made by man, with Bagger 293 its - "lead vessel" - being the largest ground vehicle in history. [7]
Bagger 288 (Excavator 288), previously known as the MAN TAKRAF RB288 [2] built by the German company Krupp for the energy and mining firm Rheinbraun, is a bucket-wheel excavator or mobile strip mining machine. When its construction was completed in 1978, Bagger 288 superseded Big Muskie as the heaviest land vehicle in the world, at 13,500 tons. [3]
The six-section crawler undercarriage, with a maximum travel speed of 6 meters per minute, carries the total mass of 3850 tons. [4] With 10 buckets of 1.5 cubic meters each and 57 pours per minute (known as the pour rate), the excavator achieves a theoretical mining capacity of 5130 cubic meters per hour.
Man-hour rate = man-hours required for work / completed work quantity. Example: Excavation 0.125 mh/cy. The man-hour rate is related to the inverse of the production rate times the number of workers in the crew performing the work. Example: Excavation at 8 cy/day (8-hour day) with 2-man crew = 2 x 8 / 8 = 2 man-hours/cy. See also Production rate.
The Big Muskie was a model 4250-W dragline and was the only one ever built by the Bucyrus-Erie company. [1] With a 220-cubic-yard (170 m 3) bucket, it was the largest single-bucket digging machine ever created and one of the world's largest mobile earth-moving machines alongside the Ohio-based Marion 6360 stripping shovel called The Captain and the German bucket wheel excavators of the Bagger ...
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