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What is the typical speed of a handheld grinder?

1 Answers

JudeLynn

07/28/25 2:58pm

300 series three-phase grinders have a rated speed of around 1800 RPM. Grinder: A grinder is a commonly used device for sharpening various cutting tools and instruments. It mainly consists of a base, grinding wheel, motor or other power source, bracket, protective cover, and water feeder. Rated speed: Refers to the rotational speed of the motor at rated power, also known as the full-load speed. It is denoted by the symbol "n" and measured in "revolutions per minute" (RPM). Personal equipment such as handheld grinders and polishers have internal structures similar to motors, with stators and rotors. Handheld grinders typically use squirrel-cage induction motors due to the speed limitations of the grinding wheel. Polishers, which require higher speeds for polishing, use series-wound motors (where the rotor has windings connected in series with the stator via carbon brushes). Both types have stators and rotors.

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