Description
Continuous floor slab breaking numbs operator joints and destroys internal tool strikers. The Makita AVT Demolition Hammer 45lb accepts 1 1/8in Hex Bits while smashing foundation footings and thick pavement. Driven by a 15-amp industrial motor, this heavy-duty machine yields 35.7 ft-lbs of impact energy. Pulling the trigger with the chisel unweighted against concrete causes violent internal striker bounces that crack the retainer barrel.
An internal mechanical counterbalance mechanism moves opposite the drive piston to cancel out continuous harmonic recoil. The precision-machined steel barrel encloses an air-cushion piston striker engineered for maximum kinetic energy transfer into the 1-1/8-inch hex tool shank. The drive gear housing utilizes cast aluminum with an integrated heat sink design to shed internal operating heat. Sealed armature bearings keep abrasive masonry dust out of motor windings. Grease breakdown inside the counterbalance chamber causes loud chassis rattling and increased vibration transfer.
Floor Demolition Mechanical Hardware Array
Heavy slab removal demands high kinetic energy paired with active recoil mitigation to protect operator endurance. The mechanical layout pairs continuous linear piston impacts with an internal mechanical counterweight.
- 15-amp electric motor delivers reliable kinetic impact power under continuous concrete demolition loads
- 1-1/8-inch hex chuck accepts heavy demolition bull points, cold chisels, and asphalt cutters firmly
- Anti-Vibration Technology utilizes an internal counterweight to cut vibration transfer to operator joints
- Constant speed electronics maintain impact velocity under heavy downward mechanical chisel loads
- Service reminder light indicates carbon brush wear approximately eight hours before tool shut-off
- Impact-resistant aluminum motor housing protects internal drive components from flying concrete chunks
- Ergonomic rubberized grip handle dampens continuous vibration transfer into the operator hand axis
Kinetic Piston Telemetry Load Analysis
Electrical draw stabilizes at 15 amps under continuous concrete breaking at maximum load. Impact frequency cycles at 1,450 blows per minute driven by the air-cushioned piston assembly. Mechanical kinetic energy outputs 35.7 ft-lbs per blow into structural concrete slabs. Continuous internal air compression raises gear casing surface temperatures to 142°F during extended demolition runs. The 1-1/8-inch hex drive chuck withstands up to 140 ft-lbs of off-axis pry torque. Sound pressure measures 97 dBA at operator ear level.
Masonry Demolition Field Care Directives
Heavy pavement breakers require regular bit shank lubrication to preserve internal retainer splines. Plumbers drilling round holes in foundation walls must not purchase this tool because it lacks a rotary drilling mode. Prying heavy slabs with the chisel shank while running the hammer will snap the tool steel inside the hex chuck.
- Coat the shank of every 1-1/8-inch hex chisel with high-temperature hammer grease before chuck insertion
- Blow concrete dust out of the rear motor ventilation slots using dry compressed air weekly
- Inspect the hex chuck retainer sleeve for axial play to prevent loose bit retention failures
Commercial Warranty Terms Kit Inventory
Makita backs this demolition hammer with a 1-Year limited commercial warranty covering manufacturing and material defects. The complete packaged kit contains the 45 lb AVT demolition hammer, one 1-1/8-inch hex bull point chisel, a tube of hammer grease, a sturdy carry case, and the instruction manual.