Posted on Sunday, 21st June 2009 by Calvin Stephenson
Most people who make holes in masonry use one of two different tools. The first is whats called a Rotary Hammer; a hammer that rotates. The other tool is called a hammer drill; a drill that vibrates. But often it’s confused as to which is the best option.
The Rotary Hammer and the Hammer Drill.
For the sake of simplicity, think of a hammer drill as a drill. Inside the tool there is a ratchet mechanism that causes the bit to vibrate at high speed while it is drilling. This helps to chip away at the masonry substrate. Hammer drills are small and similar in shape to a regular hand drill. Remember, they are made for light work.
As above, think of a rotary hammer as a hammer. It has a larger motor than a drill. That larger motor drives a crankshaft, which in turn drives a piston, which beats on the end of the bit. This hammering action transfers energy through the length of the bit to the hard carbide tip at the end of the bit. The beating action cuts and chips away at the concrete or stone.
Rotary hammers also rotate the bit while the piston is beating on it; pulling the debris out of the hole that hammer is making.
So which tool is the best option? The Rotary Hammer or the Hammer Drill?
Application is Key.
It’s best to use a Hammer Drill:
* When making small holes, such as 3/8 or smaller
* For mortar, concrete blocks or bricks and NOT for reinforced concrete or stone
* Anchors or injections
When to use a Rotary Hammer:
* stone or reinforced concrete
* larger projects
* broader cavity
Hammer drills are smaller in size and usually more affordable.
So, the rule of thumb is big jobs are for Rotary Hammers while smaller jobs are for Hammer Drills
Tags: drill, drills, equipment, Football Tactics & Drills, hammer drill, hammer drills, masonry equipment, masonry tools, pest control equipment, pest control supply, rotary hammer, rotary hammers, supplies, tools, working with concrete
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