Demolition breakers are tools designed for demolition and fragmentation of concrete, mortar, asphalt and rock. Their performance is directly related to impact energy, blow frequency and efficiency of force transfer to the substrate.
The breaker operates through an electromechanical or pneumatic system that converts electrical energy or compressed air into high-intensity reciprocating motion. This motion produces successive impacts transmitted to the chisel or bit.
Impact energy, measured in joules (J), indicates the force applied per blow. Professional equipment typically ranges from:
Higher energy reduces demolition time but increases vibration and equipment structural stress.
Blows per minute (BPM) affect productivity. There is a technical trade-off between energy and frequency:
The ideal combination depends on material compressive strength (e.g. fck for concrete).
The shank system must withstand the torque and energy transmitted without deformation.
Breakers produce significant vibration (m/s²), which can cause fatigue and occupational risk. Professional models include:
Breaker selection should consider impact energy, blow frequency and structural robustness. Undersized equipment increases job time; oversized units increase operating cost and operator fatigue. Correct technical choice optimizes productivity and safety.
