A grader is also commonly referred to as a grader, motor grader or simply grading a blade with a long blade used to create a flat surface across some type of heavy equipment.
Although early models were towed behind horses and later tractors, most modern graders are self-propelled and are therefore technically "motor graders".
Typical graders have three axles, front steering followed by a leveling blade, and a cabin and engine above the successive rear axles.
Some graders also have front wheel drive for improved performance. Some graders have optional rear attachments such as a ripper, scraper or tamper.
A blade can also be added in front of the front axle. For snow plowing and some dirt grading, a main blade extension can also be installed.
Capacities range from 2.50 to 7.30 m (8 to 24 ft) blade width and 93--373 kW (125--500 hp) engines. Some classifiers can operate multiple attachments or be designed for specific tasks such as underground mining.
