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A detailed buying guide: how to choose a pneumatic demolition hammer.
This section covers pneumatic hammers, from light chipping hammers used in body repair, rust and scale removal and metal chiselling to heavy 20–40 kg paving breakers for breaking asphalt, concrete, rock and frozen ground. They are used in car service, production, road construction, demolition and utility work. The tool is simple, durable, does not overheat and carries no risk of electric shock, but light models need a workshop compressor and heavy breakers need a diesel or electric site compressor. For how air tools work, read what pneumatic tools are and how they work.
Light chipping hammers weighing 1–3 kg suit body work, cutting seized fasteners and cleaning seams, 5–12 kg chipping hammers suit removing concrete, brick and tile, and 20–40 kg paving breakers suit breaking asphalt, foundations and rock. Heavy breakers are used vertically, letting the weight of the tool do the work. See how to use a demolition hammer safely.
Light chipping hammers deliver a few joules per blow, medium chipping hammers 10–25 J and heavy breakers 30–70 J. Higher energy speeds up breaking hard concrete and rock but increases weight and air demand. Read what is impact energy (J).
Light hammers deliver 2,000–4,500 blows/min and suit precise, fine chipping, while heavy breakers deliver 1,000–1,600 blows/min with a stronger blow. Compare blow rate together with impact energy. See what is impact rate.
Light hammers use round-shank chisels with a spring retainer, while medium and heavy models use a hex shank, for example 17, 22×82 or 25×108 mm, with a latch or clip retainer. Buy chisels (pointed, flat, wide or panel-cutting) that match the shank of the tool. Read differences between SDS plus, SDS max, and HEX systems.
Light chipping hammers use 100–300 l/min and run on a workshop compressor, while heavy breakers use 1–2 m³/min at 6–7 bar and require a diesel or electric site compressor. Compressor output should have a reserve, especially when several tools run at once. See how to choose an air compressor and how to calculate compressor air delivery.
Light hammers are fine with an 8–10 mm hose and 1/4" inlet, while heavy breakers need a reinforced hose with an inner diameter of 16–19 mm, claw couplings and a safety clip. The percussion mechanism needs constant lubrication via a built-in or in-line lubricator. Read how to choose an air hose and connectors and how to prepare compressed air: condensate, filters, regulators, and lubricators.
Anti-vibration handles, a spring or suspended piston system and a silencer reduce the load on the hands and the noise, which can exceed 100 dB on heavy breakers. Wear ear protection, glasses, gloves and safety boots. See what is vibration level and how to choose hearing protection.
Disconnect the air before changing chisels, check that the retainer and hose couplings are secure and never fire the hammer without a chisel. A worn piston, retainer, bushing and seals can be replaced with spare parts. Read how to use pneumatic tools safely and how to choose spare parts for pneumatic and hydraulic tools.
At ToolsArmenia you can compare pneumatic demolition hammers by impact energy, blow rate, chisel shank, air consumption and weight and choose a model that suits your jobs and compressor.
