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A skid-steer loader is actually an engine powered machinery that has a small and rigid frame. It is outfitted with lift arms that are used to attach to various labor saving tools and attachments. Normally, skid-steer loaders are four-wheel drive vehicles that have the left-hand side wheels working independent of the right-hand side wheels, though several models are equipped with tracks instead. On the four-wheel models, having each side independent of each other allows the wheel speed and rotation direction of the wheels to know which course the loader will turn.
The skid-steer loader can execute zero-radius turns or "pirouettes." This added feature allows the skid-steer loader to be able to maneuver for certain applications that need an agile and compact loader.
The lift arms on the skid-steer loader are located at the side of the driver with pivots at the rear of the driver's shoulders. These features makes the skid-steer loader different than the traditional front loader. Because of the operator's proximity to moving booms, early skid loaders were not as safe as conventional front loaders, especially during the operator's entry and exit. Modern skid-steer loaders nowadays have numerous features to protect the driver like fully-enclosed cabs. Similar to various front loaders, the skid-steer model can push materials from one location to another, is capable of loading material into a truck or trailer and could carry material in its bucket.
Operation
Many times a skid-steer loader could be utilized on a jobsite in place of a large excavator by digging a hole from the inside. To begin with, the skid-steer loader digs a ramp leading to the edge of the desired excavation, and next it makes use of the ramp in order to excavate material out of the hole. As the excavation deepens, the machinery reshapes the ramp making it steeper and longer. This is a very useful way for digging underneath a structure where there is not sufficient overhead clearance for the boom of a big excavator. For example, this is a common situation when digging a basement beneath an existing home or building.
The skid-steer loader attachments add much flexibility to the machinery. For instance, conventional buckets on the loaders can be replaced attachments powered by their hydraulics comprising sweepers, mowers, snow blades, cement mixers, pallet forks, backhoes and tree spades. Some other popular specialized attachments and buckets comprise angle brooms, dumping hoppers, wood chipper machines, grapples, tillers, stump grinders rippers, wheel saws, snow blades, and trenchers.
History
In the year 1957, the first front-end, 3-wheeled loader was invented in Rothsay, Minnesota by brothers Louis and Cyril Keller. The brothers invented the loader so as to help a farmer mechanize the process of cleaning turkey manure from his barn. This particular machine was compact and light and included a rear caster wheel that enabled it to maneuver and turn around within its own length, enabling it to perform similar jobs as a conventional front-end loader.
The Melroe brothers of Melroe Manufacturing Company in Gwinner, N.D. purchased during 1958, the rights to the Keller loader. The company then hired the Keller brothers to help with development of the loader. The M-200 Melroe was actually the result of this partnership. This model was a self-propelled loader that was launched to the market during the year 1958. The M-200 Melroe featured a 12.9 HP engine, a 750 lb lift capacity, two independent front drive wheels and a rear caster wheel. By 1960, they changed the caster wheel together with a back axle and introduced the first 4 wheel skid steer loader that was called the M-400.
The term "Bobcat" is used as a generic term for skid-steer loaders. The M-400 immediately after became the Melroe Bobcat. The M-440 version was powered by a 15.5 HP engine and has rated operating capacity of 1100 lbs. The company continued the skid-steer development into the middle part of the nineteen sixties and launched the M600 loader.
