Bosch RH540M 12-Amp 1-9/16" SDS-max Variable Speed Rotary Hammer Drill – 6.1 Ft.-Lbs Impact Energy, Dual Mode

The Bosch RH540M 12-Amp 1-9/16" SDS-max Variable Speed Rotary Hammer Drill delivers exceptional power, versatility, and durability for professional concrete contractors and remodelers. Offering 6.1 ft.-lbs. of impact energy—up to 20% more than comparable combination rotary hammers—this tool easily handles demanding concrete demolition, drilling, and chiseling tasks.

With a dual mode selector knob, you can quickly switch between rotary hammer and hammer-only modes to match your application. The SDS-max bit system allows for one-handed, tool-free bit changes, while the Vario-Lock™ mechanism enables the chisel to be locked in 12 different positions for optimal working angles.

The powerful 12-amp motor delivers 170–340 RPM in rotary mode and 1,200–2,750 BPM in hammer mode, providing fast, efficient performance. Service minder brushes alert you when maintenance is required, and the tool’s robust design ensures long service life in demanding job site conditions.

Key Features:

High Impact Power: 6.1 ft.-lbs. of impact energy for heavy-duty concrete work

Dual Operation Modes: Rotary hammer and hammer-only modes for versatility

SDS-max Bit System: Tool-free, one-handed bit changes

Vario-Lock Chisel Positioning: 12 locking positions for best working angle

Variable Speed Motor: 170–340 RPM (rotary), 1,200–2,750 BPM (hammer)

Service Minder Brushes: Indicate when maintenance is needed

Durable Construction: Built for professional job site use

Specifications:

Brand: Bosch

Model: RH540M

Motor: 12 amps

Impact Energy: 6.1 ft.-lbs.

Modes: Rotary hammer, hammer-only

Bit System: SDS-max

Speed: 170–340 RPM / 1,200–2,750 BPM

Weight: 15.2 lbs.

Application: Concrete drilling, chiseling, demolition

Perfect For: Professional contractors, masons, and remodelers who need a high-power rotary hammer with flexible operating modes and superior durability.