What are Motor Graders?

Motor graders can be used to clear snow on a road.

The term motor grader generally refers to a type of large construction machine used for leveling uneven ground, either to obtain a flat surface or a surface with a certain degree of slope or incline. There are also smaller road leveling machines, which are a separate part of the machine hitched to a tractor or other vehicle. A large steel blade is attached below the grader and the angle, slope and height of this blade can be adjusted to achieve the desired levelness of a surface. Motor graders can be used for a variety of purposes, for example, to prepare the foundation of a new road for paving, to build and maintain gravel and dirt roads, to level ground for construction sites, and to remove snow. These machines are also known as graders, motor graders, blades and maintainers.

Motor graders often create even surfaces on dirt roads.

In construction, the purpose of motor graders is usually to finish rough grading done by other heavy machinery that is not capable of having the same precision, such as a scraper or excavator. The motor grader’s adjustable blade allows for precise leveling of a surface, and this can be used to create a perfectly level area, for example for the construction of a large building. A grader can also be used to provide a surface, usually a road surface, a specific slope or cross slope for better surface runoff after paving. Other common uses for graders are maintaining gravel and dirt roads, eliminating uneven surfaces like potholes and washboards.

In road construction, rough grading is usually done by an excavator.

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The blade of a grader can vary in size, usually between 2.5 and 7.3 m. Some motor graders, for example those used for clearing snow, can be equipped with two blades to increase efficiency. Engines also range in size from 125 to 500 horsepower. Some motor graders incorporate GPS technology, allowing greater control and precision in determining the length of road or area of ​​ground to be graded by the machinery.

Motor graders are used to smooth roads for traffic.

Large motor graders are most commonly used for road and highway construction and maintenance, construction site preparation, snow removal and underground mining. Smaller motor graders, which are attached to another vehicle for use, are most commonly used for making and maintaining dirt and gravel roads and for smaller construction projects such as making roads and parking lots. Several companies manufacture motor graders, including Caterpillar, Volvo Construction Equipment, Komatsu and Liu Gong.

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