BOSCH RH540M 1-9/16 in. SDS-Max 12.0-Amp Combination Corded Hammer Drill Kit

Item No. 19955
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BOSCH RH540M 1-9/16 in. SDS-Max 12.0-Amp Combination Corded Hammer Drill Kit is a combo rotary hammer and hammer-only tool designed for concrete contractors and professional re-modelers who need a powerful and versatile tool. It delivers 6.1 Ft.-Lbs. of impact energy while weighing in at only 15.2 Lbs. The motor is rated at 170 to 340 RPM in rotary mode and 1,200 to 2,750 BPM in hammer mode, which will easily reduce concrete to dust. Its SDS-Max® bit system allows tool-free and one-handed bit changes. The Vario-Lock™ mechanism lets users angle the chisel into 12 different positions to optimize the working angle. The hammer has a Dual Mode Selector Knob and service minder brushes, which clearly indicate when preventive maintenance is required.


  • SDS-Max Bit system for tool-free bit changes with automatic bit locking, dust protection and maximum impact energy transfer rate
  • Combination dual mode knob selector allows the tool to be switched between rotary hammer mode or hammer only mode
  • Vario-Lock positioning allows rotates and locks chisel into 12 different positions to optimize working angle
  • Innovative service modules designed so a qualified service technician can quickly replace the brushes and cord
  • 360 Degree Auxiliary Handle provides a wide range of movement along with operator comfort
  • Integral clutch disengages torque transmission if the bit gets into a bind situation
  • Grounded design, CSA listed, complies to OSHA


  • (1) Auxiliary Handle
  • (1) Carrying Case


Cord Length8 ft.
Chuck DesignKeyless
Impact Energy/EPTA (ft. lbs.)6.1
Max. Hole Diameter in Concrete1-9/16"
Max. Hole Diameter in ConcreteCore Bi4"
Max. Hole Diameter in ConcreteThru Ho2-1/2"
No Load BPM1,500-2,900
No Load RPM170-340
Optimal Concrete Capacity Range1/2" - 1-3/8"

Item Length:19 in.Item Width:10.5 in.
Item Height:4 in.Item Weight:15.2 lbs.