What is a demolition shear?
A hydraulic-powered attachment mounted on an excavator or loader that cuts through steel beams, reinforced concrete, and structural members during demolition work.
A demolition shear is a hydraulic cutting tool mounted on the boom of an excavator or loader that uses opposing blades to slice cleanly through structural steel, rebar-reinforced concrete columns, and other metal components during building teardown. The attachment operates by applying crushing and shearing force simultaneously, enabling operators to sever beams and members where sawing or torch-cutting would be impractical or create excessive debris.
Demolition shears matter on Ontario jobsites because they speed up selective demolition work, reduce site preparation time, and allow contractors to recover steel and other materials more efficiently. The clean cuts also reduce dust and fumes compared to thermal cutting methods. Common applications include cutting through H-beams and I-beams in multi-story structures, severing reinforced concrete walls and pillars, and processing bundled rebar for removal.
Shear capacity varies by model and hydraulic pressure. Contractors using these attachments need equipment with sufficient engine power and flow to operate the shear reliably, as undersized carriers may struggle with denser structural members. Commercial and industrial demolition contractors in Ontario typically operate multiple shear sizes to match job scale, from smaller units for residential selective work to heavy-duty models for large-scale deconstruction projects.