Concete Demolition Tools - Rotary Hammer

Big rotary hammers are known as either SDS-max or spline-drive hammers, depending on whether they accept SDS-max or spline-shank bits.

The versatility of the rotary hammer allows it to demolish concrete with a hammer only method, or to deliver rotary-hammer action for boring holes in concrete. This is done in the rotary hammer mode by driving twist drills and core bits, or in the hammer only mode to utilize everything from flat chisels to ground-rod drivers.

However, this versatility comes at a price, since rotary hammers have an extra drive train that rotates drill bits in the rotary-hammer mode. This siphons off energy and decreases efficiency in the hammer-only mode.

Rotary hammers use a battering ram that floats inside a cylinder and is launched and retrieved by a piston. A shock-absorbing airspace between the ram and the piston compresses and drives the ram forward as the piston advances, then sucks it back as the piston retracts.

Return to Concrete Demolition

Site Sponsors