Graphical Construction Glossary >> Tools. >> Power Tools >> Straight Grinder

Straight Grinder
A hand held power grinder, air driven or electric, where the grinding head fits directly to the shaft of the motor.

a makita straight grinder
A Makita 125mm electric powered grinder.

This 125mm or 5" straight Makita grinder is of a type that is not too often seen on building sites, usually finding it's home in a welding or steel fabrication shop. They have a large range of grinding wheels and accessories available to them.

This type of grinder is always used two handed. One hand on the bottom hand grip near the switch and the other above the body around the shaft. This way very fine control can be used.

A large air operated straight grinder
A large air operated straight grinder
Photo thanks to Wikimedia Commons, User:

There are certain applications that air tools are better suited to. Wet grinding is the most obvious. I can remember seeing Italian migrants to Australia that had brought their skills with them grinding in-situ terrazzo jobs with tools like the one above. They would roughly form and pour floors to bathrooms with 150m high coved kerbs, and they then ground it by eye to something that today would have to be made in a factory. The quality of the work was just miraculous. Make no mistake, these tools are capable of very fine work.

A small air grinder often used in engineering shops
A small air grinder often used in engineering shops and manufacturing.
Photo thanks to Wikimedia Commons, User:

Used in engine repair shops and in manufacturing cleaning up and de--burring castings and the like these also come with a huge array of cutting and abrasive tools.

See also Angle Grinder

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