Description
Low-voltage rotary hammers crawl through hard aggregate and overheat batteries during high-volume anchor installations. The Makita 40V max XGT 1 3/16in AVT Rotary Hammer Kit with SDS-PLUS interchangeable chuck delivers 2.9 foot-pounds of impact energy to drill structural concrete. A 40-volt brushless motor generates up to 5000 blows per minute. Attempting to core four-inch holes in granite will trip electronic safety clutches.
Die-cast magnesium gearboxes house an air-cushioned striker assembly supported by double-row cylindrical roller bearings. Anti-Vibration Technology incorporates an internal counterbalance system that reciprocates opposite the drive piston to cancel mechanical recoil. The brushless motor wet-end features heavy copper stator windings and rare-earth rotor magnets that shed thermal build under continuous drilling. Quick-change chuck couplings swap between SDS-plus and three-jaw keyed chucks in seconds.
Rotary Hammer Kit Hardware Specs
Internal mechanical counterbalances cancel striker vibration before it reaches operator hand grips. Quick-change chuck systems swap between SDS-plus and three-jaw metal chucks without tools.
- 1.187-inch solid bit capacity cuts commercial structural anchor holes in reinforced slabs
- 2.9 foot-pounds of impact energy shatters high-strength concrete aggregate effortlessly
- 40-volt brushless motor platform maintains high drilling speed under continuous load
- Anti-Vibration Technology counterbalances cancel reciprocating shock inside the tool chassis
- Active Feedback-sensing Technology shuts down motor power instantly during bit snag events
- Quick-change chuck system swaps between SDS-plus and keyless three-jaw metal chucks
- Three-mode selector switch chooses rotary hammer, rotation only, or hammer only chiseling
Pneumatic Hammer Bench Telemetry
Bench testing monitors electric current and impact stroke cadence through cured 5000 PSI concrete. Free motor rotation draws 2.1 amperes from the 40-volt battery, climbing to 18.6 amperes while driving a one-inch carbide bit. Battery terminal voltage drops from 40.2 volts down to 35.8 volts during heavy hammer resistance. Striker cadence hits 5000 BPM under thirty pounds of operator downforce. Decibel sound level meters read 91 dBA at operator ear level. Gearbox casing temperatures climb 22 degrees Fahrenheit after twenty anchor holes.
Field Service Operational Traps
Dry concrete dust packs inside the SDS-plus chuck cavity if operators skip shank greasing. Finish carpenters hanging drywall trim have no need for this heavy concrete hammer. Never hammer drill into reinforced slabs without checking the electronic clutch status light.
- Grease bit shanks with high-temperature chisel paste before inserting into the chuck.
- Wipe concrete dust off the rubber chuck nose cone after every shift.
- Clean battery terminal contact tracks using dry nylon bristle brushes every week.
Commercial Warranty Package Inventory
Makita backs this rotary hammer kit with a 3-Year limited commercial warranty. The full kit includes the 40-volt rotary hammer, SDS-plus chuck, keyless metal chuck, one 40-volt 4.0Ah battery, rapid charger, side handle, depth stop rod, and heavy carrying case.
