The 40V max XGT® Brushless 1-1/8” AVT® Rotary Hammer Kit (GRH01M1W) is a cordless concrete solution designed for heavy-load applications. It delivers the power, speed, and run-time for corded demands, without the cord. XGT technology delivers up to 135 of 3/8” holes per charge when using one 40V max XGT 4.0Ah Battery.

Key Features

• OUT POWER: Makita-built brushless motor along with 40V max XGT® battery combine to deliver the power performance required for heavy-load application
• OUT SMART: Constant speed control automatically applies additional power under load for optimum performance
• OUT LAST: Overload protection is designed to protect the motor from burnout in abnormally high torque situations
• XGT® technology delivers up to 135 of 3/8" holes using a fully charged 40V XGT® 4.0Ah battery*
• Active Feedback-Sensing Technology (AFT®) electronically turns off the motor if rotation of bit is suddenly forced to stop
• Anti-Vibration Technology (AVT®) is an internal counterbalance system along with vibration-absorbing handles that work together to reduce vibration
• Dust extraction capability with OSHA Table 1 compliant on-board HEPA Dust Extractor or stand-alone AWS® Extractor options
• Auto-Start Wireless System (AWS®) which utilizes Bluetooth® technology for wireless power-on/off communication between tool and dust extractor (AWS® Transmitter sold separately)
• Electric brake allows the tool to be repositioned faster for maximum productivity
• Torque limiting clutch engineered to prevent gear damage by automatically disengaging gears during a bind-up situation
• Variable speed dial and trigger enables user to match the speed to the application
• Built-in L.E.D. light with an independent on/off illuminates the work area
• Ergonomic soft-grip handle and large 2-finger trigger provide increased comfort on the job
• 3-mode operation for "Rotation Only", "Hammering with Rotation" or "Hammering Only" for multiple applications
• Retractable tool hook secures the tool when not in use
• Extreme Protection Technology (XPT™) is engineered for improved dust and water resistance for operation in harsh conditions
• The digital communication within XGT® optimizes performance to provide up to 2X longer sustained power under heavy-load applications
• The digital communication within XGT® actively monitors and protects against overload, over-discharge and overheating
• XGT® Tools and Batteries are designed with a multi-layer contact interface for more constant power delivery to take on high-current demands
• XGT® Batteries feature rigid rails with impact-resistant construction to secure the battery to the tool during high-demand applications
• The XGT® Rapid Charger with dual-fan design circulates air through the battery to cool the battery and circuit board quickly for faster charging
• The XGT® Rapid Charger’s digital display indicates battery charge level (-80%, +80%, 100%)
• The XGT® Rapid Charger’s built-in chip thoroughly communicates during the charging process to control current, voltage, and temperature for more efficient charging
• 40V max XGT® Lithium-Ion 4.0Ah Battery (BL1840) reaches a full charge in 45 minutes or less
• Compatible with Makita® 40V max XGT® Lithium-Ion Batteries

Technical Specifications

Included Accessories

• 40V max XGT® Brushless 1-1/8" SDS-PLUS AVT® Rotary Hammer, AFT®, AWS® Capable (GRH01Z)
• 40V max XGT® 4.0Ah Battery (BL4040)
• 40V max XGT® Rapid Optimum Charger (DC40RA)
• Dust Extractor Attachment with HEPA Filter Cleaning Mechanism (DX12)
• Side Handle Assembly (126882-3)
• Grease (194683-7)
• Cloth Towel (443122-7)
• Tool Bag

Manufacturer Resources

Makita GRH01M1W product details and documentation