About this product
The 40V max XGT® Brushless 1-1/8" AVT® Rotary Hammer (GRH07Z, tool only) is a cordless concrete solution engineered for heavy-load applications. It delivers the power, speed, and run-time for corded demands, and features a convenient D-handle design that is ideal for overhead, downward or hard-to-reach horizontal drilling/chipping applications. The Makita-built brushless motor delivers a full 2.7 ft. lbs. of impact energy, with 0-980 RPM and 0-5,000 BPM. Constant speed control automatically applies additional power under load for optimum performance.
It’s equipped with Active Feedback-Sensing Technology (AFT®), which electronically turns off the motor if rotation of bit is suddenly forced to stop, and Anti-Vibration Technology (AVT®) for reduced vibration. More than just a padded handle, AVT is an internal counterbalance that uses air pressure to move counterweight pistons in the opposite direction of the drive piston to actively reduce vibration. In addition, the vibration-absorbing back handle and side handle further reduce vibration. For added durability in harsh job site conditions, Extreme Protection Technology (XPT™) is engineered for improved dust and water resistance. The rotary hammer has dust extraction capability with an OSHA Table 1 compliant on-board HEPA dust extractor attachment (model DX15, sold separately).
Users many also use a standalone dust extractor with Auto-Start Wireless System (AWS®). AWS uses Bluetooth® technology for wireless power-on and power-off communication between the equipped tool and dust extractor. Once connected via AWS, the AWS-equipped dust extractor will automatically power on or off when the AWS-equipped cordless tool starts or stops, running only when the tool is in use. This increases productivity on a single charge and reduces continuous noise at the job or work site. The torque limiting clutch is engineered to prevent gear damage by automatically disengaging the gears if the bit binds, and constant speed control automatically adds power to the motor to maintain speed under load to complete the most demanding jobs.
Additional performance features include an electric brake, variable speed dial, built-in L.E.D. light, and a tethering loop/hanging hook to help secure the tool when working at heights or on a lift. It is ideal for a range of trades including mechanical/electrical/plumbing contractors, concrete contractors, road and bridge contractors, utility workers, pest control, maintenance operations, and more. It accepts SDS-PLUS bits.
Features
Active Feedback-Sensing Technology (AFT®) electronically turns off the motor if rotation of bit is suddenly forced to stop
Anti-Vibration Technology (AVT®) is designed to reduce vibration for increased comfort
Dust extraction capability with optional OSHA Table 1 compliant on-board HEPA Dust Extractor or stand-alone AWS® Extractor
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 trigger enables the user to match the speed to the application
D-handle design is ideal for overhead, downward or hard-to-reach horizontal drilling/chipping applications
Ergonomic soft-grip handle and large 2-finger trigger provide increased comfort on the job
Built-in L.E.D. light with an independent on/off illuminates the work area
Tethering loop/hanging hook helps secure the tool when working at heights or on a lift (sold separately)
3-mode operation for "Rotation Only", "Hammering with Rotation" or "Hammering Only" for multiple applications
Multiple bit angles allow the bit to be set at different positions for increased comfort
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
Compatible with Makita® 40V max XGT® Lithium-Ion Batteries
Makita-built brushless motor along with 40V max XGT® battery combine to deliver the power performance required for heavy-load application
Constant speed control automatically applies additional power under load for optimum performance
Overload protection is designed to protect the motor from burnout in abnormally high torque situations
Includes
Hammer Bit Grease (194683-7)
CLOTH F/WIPING OIL (443122-7)
Side Handle Assembly
Specifications
- System: 40V max XGT®
- Max. Capacity (concrete drilling): 1-1/8"
- Optimum Range (concrete drilling): 3/16" - 3/4"
- Max. Capacity (concrete drilling w/ core bit): 2-9/16"
- Impact Energy (ft.lbs.): 2.7
- Impact Energy (Joules): 3.7 J
- Blows Per Minute (variable speed): 0 - 5,000 BPM
- No Load Speed (variable speed): 0 - 980 RPM
- Bind-Up Control: Yes
- Vibration Control: Yes
- Vibration (m/s²): 8.6
- Automatic-start Wireless System (AWS™): Capable (transmitter sold separately)
- Bit Type: Accepts SDS-PLUS
- Overall Length: 18-5/8"
- Net Weight (with battery): 10 lbs.
- Shipping Weight: 9.13 lbs.
- Power Type: Cordless
- Country of Origin: China