The Makita GRH07M1 is a top - notch cordless solution for heavy - load concrete jobs. Powered by a 40V max XGT® brushless motor, it combines with a high - capacity battery to deliver the power, speed, and long run - time that used to be the domain of corded tools. Its D - handle design is a game - changer, perfect for overhead, downward, or hard - to - reach horizontal drilling and chipping.The brushless motor built by Makita provides an impressive 2.7 ft. lbs. of impact energy, running at 0 - 980 RPM and 0 - 5,000 BPM. Constant speed control steps in under load, adding extra power for peak performance. Safety and comfort are top priorities. The Active Feedback - Sensing Technology (AFT®) shuts off the motor if the bit's rotation suddenly stops, while the Anti - Vibration Technology (AVT®) significantly cuts down on vibrations. AVT isn't just a padded handle; it's an internal counterbalance that uses air pressure to reduce vibrations. The vibration - absorbing back and side handles further enhance comfort.For durability in tough job sites, the Extreme Protection Technology (XPT™) boosts dust and water resistance. When it comes to dust extraction, this rotary hammer has you covered. It can work with an OSHA Table 1 compliant on - board HEPA dust extractor (model DX15, sold separately) or a standalone dust extractor with the Auto - Start Wireless System (AWS®). AWS uses Bluetooth® to wirelessly connect the tool and the extractor, powering it on and off as the tool starts and stops, increasing productivity and reducing noise.The torque - limiting clutch protects the gears by disengaging them if the bit binds. Constant speed control maintains the motor's speed under load for demanding tasks. Other features include an electric brake for quick repositioning, a variable - speed dial, a built - in L.E.D. light, and a tethering loop/hanging hook for secure use at heights. This tool is suitable for a wide range of trades, from mechanical and electrical to concrete and utility work. It accepts SDS - PLUS bits. The XGT system, with its 40V max lithium - ion batteries, offers high - power performance, advanced brushless motor engineering, intelligent digital communication, and superior durability, allowing users to fully transition to a cordless job site. The kit includes a 40V max XGT® brushless 1 - 1/8' AVT® rotary hammer (D - handle), a 40V max XGT® 4.0Ah battery, a 40V max XGT® rapid optimum charger, hammer bit grease, a cloth for wiping oil, and a side - handle assembly.
Using the Makita GRH07M1 is straightforward. First, make sure the 40V max XGT® battery is fully charged and properly inserted into the tool. Then, select the appropriate SDS - PLUS bit for your job. You can use the variable - speed trigger to match the speed to the application. For overhead, downward, or hard - to - reach horizontal drilling or chipping, the D - handle design gives you a comfortable and secure grip. When using the dust extraction feature, if you have the on - board HEPA dust extractor or a standalone AWS® extractor, connect them properly. The AWS® will automatically start and stop with the tool. As for the 3 - mode operation, choose 'Rotation Only' for normal drilling, 'Hammering with Rotation' for concrete work, or 'Hammering Only' when needed. Safety first! Always wear appropriate safety gear like goggles and gloves. If the bit gets stuck, the torque - limiting clutch will protect the gears, but it's still a good idea to be careful. The Active Feedback - Sensing Technology (AFT®) will shut off the motor if the bit's rotation suddenly stops. Don't forget about maintenance. After each use, wipe down the tool with the included cloth to remove dust and debris. Keep the battery charged and stored in a cool, dry place. Periodically, lubricate the bit with the hammer bit grease. If you're working in harsh conditions, the Extreme Protection Technology (XPT™) helps, but still, try to keep the tool as clean as possible to ensure long - term performance.
