Bench Grinder is a motor with spindle on each side of it. .The can be used to sharpen blades or chisels, or remove rust.
Stock wheel test: 30 sec
Norton wheel test: 33 sec
Review: The Dewalt was one of the grinders that we did not see any improvement in speed with addition of a a Norton wheel, that indicates that it already came with good wheels. . Its large, smooth tool rests and the stout vibration hardware to hold the eye guards was very much liked. The wheel covers can also be removed easily.
Stock wheel test: 21 sec
Norton wheel test: 29 sec
Review: Jet comes with good quality wheels and a big motor that provides very smooth and fast grinding. It also comes with 3/16-inch-thick eye shields that measure 3-7/8 inches by 5-5/8 inches. This provides great eye protection. Even though its very powerful and smooth performance but not as fast as would be with its given amperage.
Stock wheel test: 64 sec
Norton wheel test: 42 sec
Review: Skil was the only grinder that has LED lighted eye shield. It is a clever way to light the work area without adding glare. It is a basic good grinder accept it could have been a little more powerful.