Makita GRH08M1 40V Max XGT Brushless Lithium-Ion 1-3/16 in. Cordless AVT AWS Rotary Hammer Kit (4 Ah) - GRH08M1

Features:

• PERFORMANCE : Makita brushless motor and 40V max XGT battery deliver the power needed for heavy applications
• CONTROL : AFT electronically turns off the motor if rotation of bit is suddenly forced to stop
• COMFORT : AVT is a counterbalance system along with vibration-absorbing handles that work to reduce vibration
• DUST MANAGEMENT : Dust extraction capability with OSHA Table 1 compliant HEPA Dust Extractor (sold separately)
• INCLUDES : (1) 40V max XGT Lithium-Ion 4.0Ah battery, charger, side handle, grease, towel, tool bag
• OUTPOWER: Makita-built brushless motor along with 40V max XGT battery combine to deliver the power and performance required for heavy-load applications
• OUTSMART: Constant speed control automatically applies additional power under load for optimum performance
• OUTLAST: 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
• Compatible with Makita 40V max XGT Lithium-Ion Batteries
• Only use genuine Makita batteries and chargers
• 3-year limited warranty on tool, battery and charger
• *Tested 2-3/8" deep holes in 5,000 PSI concrete
• Max. Capacity (concrete drilling) : 1-3/16"
• Optimum Range (concrete drilling) : 3/16" - 3/4"
• Impact Energy (ft.lbs.) : 2.9
• Impact Energy (Joules) : 3.9 J
• Blows Per Minute (variable speed) : 0 - 4,500 BPM
• No Load Speed (variable speed) : 0 - 840 RPM
• Bind-Up Control : Yes
• Max. Capacity (concrete drilling w/ core bit) : 3-1/8"
• Vibration Control : Yes
• System : 40V max XGT
• Vibration (m/s²) : 9.1
• Automatic-start Wireless System (AWS) : Capable (transmitter sold separately)
• Bit Type : Accepts SDS-PLUS
• Overall Length : 15-5/8"
• Net Weight (with battery) : 10.1 lbs.
• Power Type : Cordless
• Shipping Weight : 21.3 lbs.
• UPC Code : 088381-764629

What Our Experts Think

• Makita GRH08M1 40V Max XGT Brushless 1-3/16″ AVT Rotary Hammer Kit delivers professional-grade cordless drilling with increased bit capacity for larger holes and heavier applications.

• 1-3/16″ SDS-MAX / SDS-PLUS capable drilling handles concrete, block, and masonry with strong performance.

• Brushless XGT motor maximizes runtime, torque, and efficient power delivery.

• AVT (Anti-Vibration Technology) reduces vibration for more comfortable use during extended jobs.

• AWS (Auto-Start Wireless System) compatibility improves workflow when paired with supported dust extractors.

Product Q&A

• What battery system does it use?
  Makita 40V Max XGT Lithium-Ion (4 Ah batteries included in kit).

• Is it good for heavy drilling?
  Yes — 1-3/16″ capacity makes it suited for larger concrete and structural holes.

• Does it reduce vibration?
  Yes — AVT lessens vibration to improve comfort and control.

• Can it be paired with dust extraction?
  Yes — AWS compatibility allows automatic on/off with supported extractors.

Maintenance Tips

• Empty and clean the dust extraction system regularly to maintain airflow.

• Wipe the tool body and vents after use to remove dust and debris.

• Inspect and clean the bit shank before insertion; lightly oil if needed.