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Diecast Masters 1:50 Caterpillar 150 Motor Grader

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$79.95
SKU:
I6-1-3-85667
UPC:
1939349304113
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Diecast Masters 1:50 Caterpillar 150 Motor Grader

Diecast Masters 1:50 Caterpillar 150 Motor Grader
$79.95

A grader, also commonly referred to as a road grader, motor grader, or simply a blade, is a form of heavy equipment with a long blade used to create a flat surface during grading. Although the earliest models were towed behind horses, and later tractors, most modern graders are self-propelled and thus technically "motor graders".

Typical graders have three axles, with the steering wheels in front, followed by the grading blade, then a cab and engine atop tandem rear axles. Some graders also have front wheel drive for improved performance. Some graders have optional rear attachments, such as a ripper, scarifier, or compactor. A blade forward of the front axle may also be added. For snowplowing and some dirt grading operations, a main blade extension can also be mounted.

Capacities range from a blade width of 2.50 to 7.30 m (8 to 24 ft) and engines from 93–373 kW (125–500 hp). Certain graders can operate multiple attachments, or be designed for specialized tasks like underground mining.

In civil engineering, "rough grading" is performed by heavy equipment or engineering vehicles such as scrapers and bulldozers. Graders are used to "finish grade". The angle, tilt (or pitch) and height of the grader's blade can be adjusted to achieve a high level of precision.

Graders are commonly used in the construction and maintenance of dirt roads and gravel roads. In constructing paved roads, they prepare a wide flat base course for the final road surface. Graders are also used to set native soil or gravel foundation pads to finish grade prior to the construction of large buildings. Graders can produce canted surfaces for drainage or safety. In some countries they are used to produce drainage ditches with shallow V-shaped cross-sections on either side of highways.

Steering is via a steering wheel or joystick controlling the angle of the front wheels, but many models also allow frame articulation between the front and rear axles, which allows a smaller turning radius in addition to allowing the operator to adjust articulation angle to aid in the efficiency of moving material. Other implement functions are typically hydraulically powered, and can be directly controlled by levers, or by joystick inputs or electronic switches controlling Electrohydraulic servo valves.

A more recent innovation is the outfitting of graders with grade control technologies, such as those manufactured by Topcon Positioning Systems, Inc., Trimble Navigation, Leica Geosystems or Mikrofyn for precise grade control and (potentially) "stakeless" construction. Manufacturers such as Deere have also began to integrate these technologies during construction. 

 

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