Bosch RH540M Corded 1-9/16″ 2-Mode Variable Speed SDS-Max Rotary Hammer, 120V 12A

The Bosch RH540M is a corded 1-9/16 in. SDS-max combination hammer with a 12 amp motor, 6.1 ft.-lbs. of EPTA impact energy, and two operating modes for rotary hammer drilling and hammer-only chiseling. Built for concrete drilling, demolition, and remodeling work, this variable-speed Bosch rotary hammer includes an auxiliary handle, grease tube, and carrying case for jobsite-ready use.

The Bosch RH540M is built for concrete contractors and professional remodelers who need a powerful SDS-max combination hammer for drilling and chipping applications. Its 12 amp motor delivers 6.1 ft.-lbs. of EPTA impact energy with a no-load speed range of 170 to 340 RPM and a blow rate of 1,500 to 2,900 BPM. That output gives the tool the strength needed for anchor holes, larger concrete drilling, and hammer-only demolition work while still keeping the tool weight to 15.2 lb.

This rotary hammer is designed around practical jobsite control. The SDS-max bit system allows tool-free, one-handed bit changes, while the Vario-Lock mechanism lets the user position the chisel in 12 different angles for better leverage and working access. The dual-mode selector switches between rotary hammer and hammer-only operation, and service minder brushes help indicate when preventive maintenance is needed. For users handling concrete drilling and demolition tasks on a regular basis, the RH540M offers a practical balance of power, control, and durability.

Bosch 1-9/16″ 2-Mode Variable Speed SDS-Max Rotary Hammer At a Glance

• 12 Amp Motor: Delivers corded power for drilling and chiseling in concrete and masonry.
• 6.1 Ft.-Lbs. EPTA Impact Energy: Provides strong impact output for demanding rotary hammer work.
• 2 Operating Modes: Supports rotary hammer and hammer-only applications.
• SDS-max Bit System: Allows fast, tool-free, one-handed bit changes.
• Vario-Lock Mechanism: Positions the chisel in 12 angles for better working leverage.
• Variable Speed: Helps improve control during drilling and chiseling tasks.
• Service Minder Brushes: Indicates when preventive maintenance is required.
• 15.2 Lb Weight: Balances SDS-max power with manageable handling for extended use.
• Concrete Capacity up to 1-9/16 In.: Built for larger drilling tasks in concrete.
• Compact Professional Layout: Suitable for contractors and remodelers who need rotary hammer and demolition capability in one tool.

Quick Specs

• Brand: Bosch
• Manufacturer Part Number: RH540M
• UPC: 000346456127
• Power Source: Corded
• Voltage: 120V
• Amperage: 12A
• Drive System: SDS-max
• Chuck Size: 1-9/16 in.
• Impact Energy: 6.1 ft.-lbs. EPTA
• Weight: 15.2 lb

Markets

• Concrete Contractors: Suitable for anchor drilling, larger holes, and demolition-related work.
• Remodeling Contractors: Useful for concrete removal, chiseling, and structural drilling tasks.
• General Construction: Fits heavy drilling and hammer-only work on active jobsites.
• Facility Maintenance: Practical for renovation, repair, and concrete modification work.
• Mechanical and MRO: Supports drilling and demolition tasks in commercial and industrial settings.
• Municipal and Institutional Maintenance: A strong fit for departments handling repairs in concrete and masonry structures.

The Bosch RH540M is a practical choice for buyers who need more drilling and chiseling force than an SDS-plus rotary hammer can provide. Its SDS-max platform, 6.1 ft.-lbs. of impact energy, and two operating modes make it well suited for larger anchor holes, concrete drilling, channel work, and hammer-only demolition. For users who need one corded combination hammer for both drilling and chipping, this model covers the most common heavy-duty applications without moving into a much larger demolition hammer category.

It also includes the features professionals expect in daily use. Tool-free bit changes, 12-position Vario-Lock, variable speed, and service minder brushes all support better control and easier maintenance planning. For buyers searching for a Bosch SDS-max rotary hammer, combination hammer, or demolition-ready concrete hammer in the 1-9/16 in. class, the RH540M remains a solid fit for commercial work and demanding remodeling tasks.

Bosch RH540M Corded 1-9/16″ 2-Mode Variable Speed SDS-Max Rotary Hammer, 120V 12A Features

• 6.1 Ft.-Lbs. of Impact Energy: Delivers strong output for drilling and chiseling in concrete.
• SDS-max Bit System: Allows tool-free, easy bit changes.
• Vario-Lock Mechanism: Provides 12 chisel positions for improved working angles.
• Dual Mode Selector Knob: Switches between rotary hammer mode and hammer-only mode.
• Service Minder Brushes: Helps indicate when preventive maintenance is required.
• Innovative Service Modules: Designed to support serviceability and long-term use.

Compatible Accessories / Works Well With

• Compatible with HDC200 Dust Extraction/Collection Hood
• Compatible with HDC250 Dust Extraction/Collection Hood
• Compatible with HDC300 Dust Extraction/Collection Hood
• Compatible with HA1030 SDS-max Hammer Adapter for SDS-plus Accessories
• Compatible with HA1031 SDS-max Hammer Adapter for Spline Accessories
• Compatible with HA1032 SDS-max Hammer Adapter for 1/2 In.-20 Thread Accessories

Bosch RH540M Corded 1-9/16″ 2-Mode Variable Speed SDS-Max Rotary Hammer, 120V 12A Includes

• (1) RH540M SDS-max 1-9/16 In. Combination Hammer
• (1) Auxiliary Handle
• (1) Grease Tube
• (1) Carrying Case
• (1) Owner’s manual

Bosch RH540M Corded 1-9/16″ 2-Mode Variable Speed SDS-Max Rotary Hammer, 120V 12A Specifications

• Brand: Bosch
• Manufacturer Part Number: RH540M
• UPC: 000346456127
• Product Type: Corded SDS-max combination hammer
• Product Line or Series: Professional
• Voltage: 120V
• Amperage: 12
• Drive System: SDS-max
• Chuck Design: Keyless
• Chuck Size: 1-9/16 in.
• Impact Energy/EPTA: 6.1 ft.-lbs. EPTA
• No-Load RPM: 170-340
• No-Load BPM: 1,500-2,900
• Variable Speed: Yes
• Reverse: No
• Max Bit Diameter: 1-9/16 in.
• Max Hole Diameter in Concrete: 1-9/16 in.
• Max Hole Diameter in Concrete, Core Bit: 4 in.
• Max Hole Diameter in Concrete, Thru Hole Bit: 2-1/2 in.
• Optimal Concrete Capacity Range: 1/2 in. to 1-3/8 in.
• Material: Metal, Plastic
• Length: 19 in.
• Width: 4 in.
• Height: 10.5 in.
• Weight: 15.2 lb

Bosch RH540M Corded 1-9/16″ 2-Mode Variable Speed SDS-Max Rotary Hammer, 120V 12A Warranty

• Bosch’s 1-year Limited Warranty For Corded Portable Power Tools

Why Customers Choose the Bosch Corded 1-9/16″ 2-Mode Variable Speed SDS-Max Rotary Hammer

Customers choose the Bosch RH540M because it gives them SDS-max drilling and chiseling performance in a tool that covers both rotary hammer and hammer-only work. For concrete drilling, demolition prep, and renovation tasks, users often need a combination hammer that can handle larger holes and chisel work without stepping up to a dedicated breaker hammer. The RH540M fills that role with strong impact energy, variable speed, and a practical two-mode setup.

It also appeals to users who want jobsite-ready control and easier maintenance visibility. The SDS-max system makes bit changes fast, Vario-Lock improves chisel positioning, and service minder brushes help users stay ahead of maintenance. For buyers looking for a Bosch rotary hammer, demolition hammer, or concrete hammer in the 1-9/16 in. SDS-max class, the RH540M remains a dependable option for demanding trade work.