Hitachi SDS Max Rotary Hammers

What’s inside an AC brushless rotary hammer? We got to see a cutaway.

February 13, 2017

Hitachi has the first brushless AC motors on the market, featured in its SDS Max rotary hammers. At the WOC 2017 last month, the company gave us a run down of this technology by showing us what’s on the inside.

About the Author

Chris Ermides

Before joining Tools of the Trade as an editor, Chris Ermides was a project manager for a custom home builder, a carpenter and remodeler. These days when he’s not writing or editing, he’s testing tools as he renovates his 1850 farmhouse in upstate New York.

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About the Author

Chris Ermides

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