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.
Skid-steer loaders are typically four-wheel vehicles with the wheels mechanically locked in synchronization on each side, and where the left-side drive wheels can be driven independently of the right-side drive wheels. The wheels typically have no separate steering mechanism and hold a fixed straight alignment on the body of the machine. Turning is accomplished by differential steering, in which the left and right wheel pairs are operated at different speeds, and the machine turns by skidding or dragging its fixed-orientation wheels across the ground. The extremely rigid frame and strong wheel bearings prevent the torsional forces caused by this dragging motion from damaging the machine. As with tracked vehicles, the high ground friction produced by skid steers can rip up soft or fragile road surfaces. They can be converted to low ground friction by using specially designed wheels such as the Mecanum wheel. Skid-steer loaders are capable of zero-radius, "pirouette" turning, which makes them extremely maneuverable and valuable for applications that require a compact, agile loader. Skid-steer loaders are sometimes equipped with tracks instead of the wheels, and such a vehicle is known as a multi-terrain loader.[1]
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.

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Applications that require the extra horsepower, such as dozing work, are also a good fit for large skid-steer loaders. "Basically, the large-frame skid steers are going to do the heavy lifting for a contractor," says Zupancic. "When they need a big machine to do the hard work on a big site, but they still need maximum manueverablity and versatility, they'll turn to a large skid steer."
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:

Skid-steer loaders are typically four-wheel vehicles with the wheels mechanically locked in synchronization on each side, and where the left-side drive wheels can be driven independently of the right-side drive wheels. The wheels typically have no separate steering mechanism and hold a fixed straight alignment on the body of the machine. Turning is accomplished by differential steering, in which the left and right wheel pairs are operated at different speeds, and the machine turns by skidding or dragging its fixed-orientation wheels across the ground. The extremely rigid frame and strong wheel bearings prevent the torsional forces caused by this dragging motion from damaging the machine. As with tracked vehicles, the high ground friction produced by skid steers can rip up soft or fragile road surfaces. They can be converted to low ground friction by using specially designed wheels such as the Mecanum wheel. Skid-steer loaders are capable of zero-radius, "pirouette" turning, which makes them extremely maneuverable and valuable for applications that require a compact, agile loader. Skid-steer loaders are sometimes equipped with tracks instead of the wheels, and such a vehicle is known as a multi-terrain loader.[1]
Some of the biggest names in the world produce skid steer loaders, including Bobcat, New Holland and Kubota. Consider a Boxer mini skid for domestic and small-scale applications, or invest in a powerful John Deere or Caterpillar loader for commercial use.  Even if you choose to buy a second-hand machine, you have the peace of mind that comes from knowing you have bought something built to last.
Las herramientas pueden cambiarse rápida y fácilmente con el sistema de acoplador rápido de la máquina. El acoplador rápido estándar permite el acoplamiento y desacoplamiento manual de las herramientas utilizando dos palancas de alto efecto de apalancamiento. El acoplador rápido hidráulico optativo permite al operador cambiar rápidamente las herramientas sin salir de la cabina.

Alibaba.com ofrece los productos 1809 palas minicargadoras. Hay proveedores de 1814 palas minicargadoras, principalmente ubicados en East Asia. Los principales países proveedores son China (Continental), Corea del Sur y Indonesia, que proveen el 99%,1% y el 1% de palas minicargadoras, respectivamente. Los productos de Palas minicargadoras son los más populares de Southern Europe, Domestic Markety South Asia. Puede garantizar la seguridad de los productos seleccionando los proveedores certificados, incluidos los productos 349 con certificación ISO9001, 43 con certificación Other y 3 con certificación ISO14001.
An extended reach design uses multiple hinges and parallel lifting bars on the loader arm, with the main pivot points towards the center or front of the machine. This allows the loader arm to have much greater operating height while retaining a compact design, and allows the vertical movement to be less of an arc and more straight-up vertical, to keep the bucket forward of the operator's cab, allowing safe dumping into tall containers or vehicles.
The first three-wheeled, front-end loader was invented by brothers Cyril and Louis Keller in Rothsay, Minnesota, in 1957.[2] The Kellers built the loader to help a farmer, Eddie Velo, mechanize the process of cleaning turkey manure from his barn. The light and compact machine, with its rear caster wheel, was able to turn around within its own length, while performing the same tasks as a conventional front-end loader.[2]
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