Bosch Rotary Hammer Kit RH540M 1-9/16 In SDS-max Combination (6.1 Ft Lbs Impact Energy 12A Motor 120V Corded Concrete Drilling Chipping Case)

Bosch RH540M 1-9/16" SDS-max 12-Amp Combination Rotary Hammer Kit

The Bosch RH540M 1-9/16-inch SDS-max corded combination rotary hammer delivers 6.1 ft-lbs of impact energy via a heavy-duty 12-amp 120V motor for fast concrete drilling, foundation anchor coring, and masonry demolition. Weighing 15.2 lbs, this versatile commercial workhorse generates 170 to 340 RPM and 1,200 to 2,750 BPM to bore solid carbide bits up to 1-9/16 inches and core cutters up to 4 inches in cured concrete. Featuring a dual-mode selector for rotary drilling or hammer-only chipping, an integral safety slip clutch, 12-position Vario-Lock chisel positioning, and Service Minder brushes, it provides continuous demolition performance, operator protection, and jobsite endurance.

Best Used For:

• Commercial Structural Concrete Anchoring: Drilling 1/2-inch to 1-3/8-inch optimal diameter anchor holes and rebar dowel pockets into high-PSI foundation slabs and columns.
• Through-Wall Mechanical and Electrical Coring: Boring large penetrations up to 4 inches in diameter through concrete walls and cinder blocks for conduit runs and plumbing pipe.
• Masonry Chipping and Surface Scaling: Removing mortar spatter, chipping poured concrete curbs, and stripping floor tiles in hammer-only mode using Vario-Lock flat chisels.

Key Performance & Safety Features

• 6.1 Ft-Lbs Impact Energy Rating: Hard-hitting electro-pneumatic drive mechanism delivers rapid penetration rates across tough aggregate concrete and masonry.
• High-Torque 12.0-Amp Motor: Supplies continuous corded electrical power for demanding commercial drilling, coring, and chipping applications.
• Dual-Mode Functionality: Simple selector knob allows instant switching between rotary hammer drilling and hammer-only demolition chipping.
• 12-Position Vario-Lock Chisel Rotation: Enables operators to orient and lock chisels into 12 distinct attack angles for optimal ergonomics during scaling.
• Integral Safety Slip Clutch: Automatically disengages torque transmission if the bit binds in reinforced steel rebar, minimizing high-torque rotational kickback.
• Tool-Free SDS-max Chuck: Allows one-handed, keyless bit insertion and automatic locking with maximum impact energy transfer and dust sealing.

What's Included

• (1) Bosch RH540M 1-9/16" SDS-max Combination Rotary Hammer
• (1) 360-Degree Auxiliary Side Handle
• (1) Heavy-Duty Jobsite Carrying Case

Technical Specifications

Pro-Tip: Before inserting SDS-max bits or chisels into the chuck, wipe the shank clean and apply a dab of hammer grease to the grooves; regular lubrication ensures smooth hammer-piston energy transfer and prevents premature chuck wear.