The Makita GRH07M1 40V max XGT® Brushless 1-1/8' AVT® Rotary Hammer Kit is a top - notch cordless solution for heavy - duty concrete work. This kit brings the power, speed, and long run - time usually associated with corded tools. Its D - handle design is a game - changer for overhead, downward, or hard - to - reach horizontal drilling and chipping jobs. The Makita - built brushless motor packs a punch, delivering 2.7 ft. lbs. of impact energy, with speeds ranging from 0 - 980 RPM and 0 - 5,000 BPM. The constant speed control feature kicks in automatically under load, ensuring optimal performance at all times. Safety and comfort are prioritized with the Active Feedback - Sensing Technology (AFT®), which shuts off the motor if the bit's rotation suddenly stops, and the Anti - Vibration Technology (AVT®). AVT isn't just about a padded handle; it uses an internal counterbalance with air pressure to actively reduce vibration, and the vibration - absorbing back and side handles add to this comfort. Extreme Protection Technology (XPT™) makes this rotary hammer tough enough for harsh job sites, offering better dust and water resistance. For dust management, it has dust extraction capabilities. You can use the OSHA Table 1 compliant on - board HEPA dust extractor attachment (model DX15, sold separately) or a standalone dust extractor with the Auto - Start Wireless System (AWS®). AWS uses Bluetooth® to wirelessly control the power of the dust extractor, turning it on and off when the tool starts and stops, increasing productivity and reducing noise. The torque - limiting clutch prevents gear damage when the bit binds, and the constant speed control keeps the motor running at the right speed to handle the toughest jobs. Other great features include an electric brake for quick repositioning, a variable speed dial for customizing speed, a built - in L.E.D. light to illuminate the work area, and a tethering loop/hanging hook for safety at heights. This rotary hammer is a must - have for various trades like mechanical, electrical, plumbing, concrete, road and bridge contractors, utility workers, pest control, and maintenance crews. It accepts SDS - PLUS bits. The XGT system, which uses 40v max lithium - ion batteries, is engineered for high - power applications, enabling a full transition to a cordless job site. With advanced brushless motor engineering, intelligent digital communication, and superior durability, XGT outperforms the competition. The kit includes a 40V max XGT® Brushless 1 - 1/8' AVT® Rotary Hammer (D - Handle), AWS® Capable (GRH07Z), a 40V max XGT® 4.0Ah Battery (BL4040), a 40V max XGT® Rapid Optimum Charger (DC40RA), hammer bit grease, a cloth for wiping oil, and a side handle assembly.
Using the Makita GRH07M1 Rotary Hammer is straightforward. First, make sure the battery is fully charged and properly inserted into the tool. Select the appropriate bit for your job and insert it into the SDS - PLUS bit holder. For different applications, use the 3 - mode operation to choose between 'Rotation Only', 'Hammering with Rotation', or 'Hammering Only'. Adjust the speed using the variable speed dial according to the task at hand. When starting a job, hold the tool firmly with both hands on the D - handle and side handle for better control. For overhead or hard - to - reach jobs, the D - handle design makes it easier to maneuver. If you're using the dust extraction feature, connect the on - board HEPA dust extractor or the standalone AWS® extractor. For the AWS® extractor, pair it with the tool using Bluetooth® so it turns on and off automatically. Some important things to note: Always wear appropriate safety gear, like goggles and gloves. If the bit gets stuck, don't force it. The torque - limiting clutch is there to protect the gears, but excessive force can still cause damage. Also, avoid using the tool in wet conditions unless it's necessary and the XPT™ protection can handle it. For maintenance, after each use, wipe down the tool with the provided cloth to remove dust and debris. Keep the bit lubricated with the hammer bit grease to ensure smooth operation. Check the battery regularly and store it in a cool, dry place. If you notice any issues with the motor, like overheating or strange noises, stop using the tool immediately and have it checked by a professional.
