Types of Cordless Grinders at Do it Best
Cordless Angle Grinders are larger tools that weigh between 10 and 20 lbs and require two-handed control. The head of an angle grinder is perpendicular to the body of the tool. Angle grinders are more powerful than die grinders. These battery-powered grinders are used for rough grinding, sanding, polishing, and even cutting. They are commonly used on tile, masonry, pavers, and rebar.
Cordless Die Grinders are smaller tools that weigh around 10 lbs. They can be operated with one hand. The head of a die grinder is parallel to the body of the tool. Die grinders have a faster blade speed for more precise, rotary grinding. They are commonly used for grinding and polishing metal, wood, and glass.
What to Consider When Choosing a Cordless Grinder
Power & Speed (RPM)
Angle grinders have more power and rotate at a slower speed of around 6,000 - 12,000 RPM. The slow, powerful rotation is well-suited for large, tough surfaces. In addition, angle grinders can be used for cutting through thick materials.
Die grinders have slightly less power and rotate at a much higher speed of 20,000 - 30,000 RPM. The high speed allows for faster material removal and precision work on small surfaces.
Wheel Size & Compatibility
Wheel sizes vary based on the type and size of the grinder as well as the task being performed. Die grinders use smaller discs, usually between 2 and 4” in size, for precision work and smaller spaces. Angle grinders use larger discs between 4 and 9” for cutting and tough grinding.
Battery Platform & Runtime
It is best to select a grinder with a battery platform compatible with tools that are currently owned. Battery grinders with a larger battery size and amp-hour rating will provide extended use with less charging.
Brands
Do it Best carries high-quality cordless grinder tool brands, including Milwaukee and Dewalt, which provide a smooth customer experience and a long lifetime. Choose a high-quality cordless grinder from Do it Best, and browse the rest of our cordless power tools.
FAQs About Cordless Grinders
Cordless angle grinders are strong enough to cut through metal.
Small grinder wheels between 2 and 4” are best for die grinders and precision work. Larger grinder wheels between 4 and 9” are best for angle grinders and more heavy-duty work.
Depending on the type of work being done, a cordless grinder battery usually lasts anywhere from 15 - 60 minutes.