thomas. Excavator. May 31st , 2018.
Before the 1990s all excavators had a long or conventional counterweight that hung off the rear of the machine to provide more digging force and lifting capacity. This became a nuisance when working in confined areas. In 1993 Yanmar launched the worlds first Zero Tail Swing excavator9 which allows the counterweight to stay inside the width of the tracks as it slews thus being safer and more user friendly when used in a confined space. This type of machine is now widely used throughout the world.
Bobcat Company is an American-based manufacturer of farm and construction equipment part of Doosan Group of South Korea. Its American headquarters is in West Fargo North Dakota USA formerly in Gwinner North Dakota. Its European headquarters moved in 2017 from Waterloo Belgium to Dobris (near Prague) in Czech Republic where Bobcat operates one of its European manufacturing plants. It was a subsidiary of the Ingersoll Rand Company from 1995 until July 2007 when it was sold for US$4.9 billion to Doosan Infracore.1 The company sells skid steer loaders compact excavators compact utility vehicles compact tractors and other small hydraulic equipment under the Bobcat brand name. It is one of the few major manufacturing companies operating in North Dakota.
On the end of the stick is usually a bucket. A wide large capacity (mud) bucket with a straight cutting edge is used for cleanup and levelling or where the material to be dug is soft and teeth are not required. A general purpose (GP) bucket is generally smaller stronger and has hardened side cutters and teeth used to break through hard ground and rocks. Buckets have numerous shapes and sizes for various applications. There are also many other attachments which are available to be attached to the excavator for boring ripping crushing cutting lifting etc. Excavators in Scandinavia often feature a tiltrotator which allows attachments rotate 360 degrees and tilt +/- 45 degrees in order to increase the flexibility and precision of the excavator.
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