Mounted Breakers

The speed, versatility, and impact energy of mounted breakers are widely used by contractors to demolish heavily reinforced walls, slabs and decks.

Excavator-mounted breakers can have production rates of more than 1,100 cubic yards of unreinforced concrete per day. Productivity varies depending on a variety of factors including type of concrete, accessibility, and operator skill.

In addition to demolishing concrete, many hammers can be fitted with special tool shapes that allow them to drive piles and sheeting, compact soil, edge trenches, penetrate frozen ground, and cut asphalt.

Hammer impact energy is the most important selection criteria when choosing a mounted breaker for a particular job, since the hammer must be able to hit the concrete hard enough to fracture it. Only when impact energy is sufficient does impact rate (blows per minute) become a factor.

In factoring impact energy, hammer weight is important, but is sometimes confusing. Some manufacturers report the weight of the hammer with the boom bracket, surrounding housing (cradle), and working tool included. Others report just the hammer weight itself.

This is why comparing tool diameter may be the simplest and most accurate means of determining the degree of hammer impact energy. By measuring the tool diameter at the lowest point just inside the hammer and comparing it to the diameter of other tools, impact energy may be reliably measured. This is because the tool diameter is in direct proportion to the piston size.

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