Description
Standard rotary hammers drag and overheat when long extension leads cause voltage drops across commercial job sites. The Metabo 1-9/16in SDS-MAX BL rotary hammer maintains full chisel cadence under generator fluctuations. An 1150-watt brushless motor produces 8.7 joules of impact energy. Attempting to core five-inch holes in solid granite will slip the mechanical clutch.
Die-cast magnesium gear housings enclose an electro-pneumatic hammer piston running in synthetic fluid grease. The AC brushless motor wet-end eliminates carbon brushes and commutators, shedding thermal build under continuous drilling resistance. Metabo VibraTech handles integrate counter-balanced dampening springs that decouple reciprocating shock from technician hands. An S-automatic safety clutch decouples drive gears mechanically the instant drill bits bind inside structural rebar cages.
Brushless Rotary Hammer Hardware Specs
AC brushless motors maintain constant drilling speeds despite voltage sags across long generator lines. Metabo VibraTech handles isolate technician palms from continuous mechanical recoil.
- 1.562-inch solid bit capacity cuts heavy structural anchor holes in cured industrial concrete
- 8.7 joules of impact energy pulverizes hard aggregate during heavy foundation drilling
- 1150-watt AC brushless motor eliminates brush maintenance while tolerating voltage drops
- Metabo VibraTech suspension handle absorbs reciprocating shock to protect worker joints
- S-automatic mechanical safety clutch disengages drive gears instantly during bit bind-up
- Two-mode selector dial shifts between hammer drilling and hammer-only chiseling operations
- SDS-max drive chuck locks large core bits and demolition chisels securely without slip
Hammer Bench Load Telemetry
Bench testing monitors electrical current draw and impact energy during concrete penetration. Unloaded motor rotation draws 3.2 amperes at 120 volts, surging to 11.6 amperes while drilling 1-1/2-inch holes in high-strength concrete. Spindle rotation drops from 500 RPM free speed down to 425 RPM under heavy downforce. Striker frequency stabilizes at 2900 BPM under load. Decibel sound level meters read 94 dBA at operator ear level. Front gearcase exterior temperatures climb 24 degrees Fahrenheit after fifteen deep holes.
Field Service Operational Traps
Neglecting bit shank grease causes high-friction galling that seizes expensive SDS-max bits inside the chuck. Finish carpenters hanging drywall trim have no need for this heavy concrete hammer. Never operate this machine in chisel mode with the rotation lock lever disengaged.
- 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 power cord insulation jackets using solvent wipes to inspect for wire cuts.
Commercial Warranty Package Inventory
Metabo covers this rotary hammer with a 3-Year commercial warranty on motor and mechanical drive components. The package contains the 1-9/16-inch SDS-max rotary hammer, auxiliary side handle, depth stop rod, bit grease tube, and heavy plastic carrying case.