What Is an Angle Grinder?

Angle grinders are powerful tools with a variety of uses, and can be found in lots of workplaces that need cutting or grinding applications. They can be very dangerous if not used correctly, and come with a host of safety features to protect the operator. An angle grinder is a tool that no serious shop worker should be without.

Function

Angle grinders are used to cut metal or stone through the use of spinning, abrasive disc attachments. For cutting jobs that need clean, even cuts, a diamond disc is used. Diamond discs last much longer than other abrasive materials. They can also be used to polish surfaces with other disc attachments, which range in 'grit' levels of abrasion. The rougher the surface that needs to be polished, the higher level of grit needed for the polishing pad.

Types

Each model of angle grinder is made for a different disc size. Typically, the tools are made to fit discs ranging from 4.5 inches to 9 inches in increments of 1 inch. Angle grinder models can be found in both 110 and 230 volts AC. They also range from 500 to 2500 watts, with a higher wattage indicating a more powerful grinder. The larger the grinder, the more wattage it will require.

Features

An angle grinder is a handheld tool. It uses an electrical motor to power the spinning discs. An angle grinder has a side handle to hold while in use, and most models allow for adjustment for both right-handed and left-handed operators. A 'dead man switch' is a feature most models have as well, which means operators must hold down the 'on' switch during use, or the machine will turn itself off. The feature is designed to prevent chance of injury.

Benefits

Angle grinders are highly portable tools that pack a lot of power. They can grind, cut and polish, which makes them very versatile. They are used with stone and metal, and can be found in home workshops as well as professional outfits and construction sites. They even come in cordless models for areas without easy access to power sources.

Considerations

The angle grinder is a dangerous piece of equipment when used incorrectly. According to the Department of Consumer and Employment Protection (Government of Western Australia), the biggest danger of the angle grinder is kickback. Because the discs are often diamond or another very hard material, and spin in excess of 8000 RPM, they can cause very serious injuries if they encounter skin. It is important to wear safety gear that includes a face mask, eye protection and gloves.