The Melroe brothers, of Melroe Manufacturing Company in Gwinner, North Dakota, purchased the rights to the Keller loader in 1958 and hired the Kellers to continue refining their invention. As a result of this partnership, the M-200 Melroe self-propelled loader was introduced at the end of 1958. It featured two independent front-drive wheels and a rear caster wheel, a 12.9 hp (9.6 kW) engine and a 750-pound (340 kg) lift capacity. Two years later they replaced the caster wheel with a rear axle and introduced the M-400, the first four-wheel, true skid-steer loader.[2] The M-440 was powered by a 15.5 hp (11.6 kW) engine and had an 1,100-pound (500 kg) rated operating capacity. Skid-steer development continued into the mid-1960s with the M600 loader.
Vendo implemento retro para minicargadora o tractor, totalmente nuevo, sin apenas uso, no más de 20h. sin nada de olgura, impecable. Pintura original. Mejor ver. similar a caterpillar Komatsu case new holand jcb 3cx Volvo bh 27 op 030 30 terraco retro mixta zanjadora cazo zanja retroexcavadora para tractor brazo implemento ascesorio pala destierro ahoyadora optimal melroe 730 sh 830 bobcat s130 753 853 s 160 200 sk 714 robot
The original skid-steer loader arms were designed using a hinge at the rear of the machine to pivot the loader arm up into the air in an arc that swings up over the top of the operator. This design tends to limit the usable height to how long the loader arm is and the height of that pivot point. In the raised position the front of the loader arm moves towards the rear of the machine, requiring the operator to move extremely close to or press up against the side of a tall container or other transport vehicle to get the bucket close enough to dump accurately. At the highest arm positions the bucket may overflow the rear of the bucket and spill directly onto the top of the machine's cab.
"Interior demolition is a good example where these machines excel, as the machine is small enough to access the inside of a building, yet powerful enough to use a hydraulic breaker attachment to demolish concrete and then switch to a grapple to remove the debris," says Rostberg. "Accessing in-between houses built closely together or through backyard gates and fences is another prime example of the usefulness of this size machine."
El sistema hidráulico de la máquina se ha fabricado para que proporcione potencia y fiabilidad máximas. Además de suministrar potencia a las ruedas, este sistema también proporciona las funciones de levantamiento e inclinación del cargador, alimenta el circuito auxiliar para impulsar las herramientas e impulsa el ventilador de enfriamiento del motor. Las bombas hidráulicas se impulsan directamente con el motor para obtener el máximo rendimiento hidráulico y una excelente fiabilidad sin utilizar correas. El sistema hidráulico también cuenta con:
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La amplia abertura de la cabina ofrece una vista excepcional de la herramienta. El ángulo inclinado del compartimiento del motor permite una excelente visibilidad de la parte trasera de la máquina. El espejo retrovisor estándar proporciona al operador una vista panorámica de la parte trasera y de la parte lateral de la máquina. Las ventanas laterales se quitan fácilmente para permitir la limpieza.
The wheels on a skid steer typically have no steering mechanism, they are in a fixed, straight line relative to the body of the machine.  By turning the left and right wheel pairs at different speeds, the machine turns by skidding, or dragging its wheels across the ground.  The rigid frame and strong wheel bearings prevent the torsional forces caused by this dragging motion from damaging the machine.  This skidding motion tears up the ground on which the machine operates.
United Rentals offers you the world’s largest fleet of dependable skid-steer loaders. From the farm to the construction site to the industrial plant, these compact and maneuverable machines are ready to tackle your jobs fast and cost-effectively. Skid-steers are excellent for digging, grading and leveling. The larger machines are suited for the toughest applications and for use with special high-performance high-flow hydraulic attachments. A wide variety of attachments allow each of these machines to do more than just load materials. Quick-change attachment systems give you the ability to quickly and easily connect attachments.
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