The Makita GRH01M1 40V max XGT® Brushless 1-1/8” AVT® Rotary Hammer Kit is a game - changer for heavy - load concrete jobs. No more cords, but it still packs the power, speed, and long run - time of corded tools. With XGT technology, using one 40V max XGT 4.0Ah Battery, it can drill up to 135 of 3/8” holes per charge. The Makita - built brushless motor offers 2.8 ft. lbs. of impact energy, running at 0 - 980 RPM and 0 - 5,000 BPM. Its constant speed control adds extra power under load for top - notch performance. The GRH01M1 comes with Active Feedback - Sensing Technology (AFT®). If the bit's rotation suddenly stops, the motor shuts off electronically. And the Anti - Vibration Technology (AVT®) is not just a padded handle. It's an internal counterbalance system using air pressure to move counterweight pistons against the drive piston, and combined with vibration - absorbing back and side handles, it greatly reduces vibration. For tough job sites, Extreme Protection Technology (XPT™) boosts dust and water resistance. This rotary hammer can extract dust. You can use an OSHA Table 1 compliant on - board HEPA dust extractor attachment (sold separately) or a standalone Auto - Start Wireless System (AWS®). AWS uses Bluetooth® for wireless on/off communication between the tool and the dust extractor, saving power and reducing noise. The torque - limiting clutch prevents gear damage when the bit binds, and the constant speed control keeps the motor at the right speed. Other great features include an electric brake, variable speed dial, built - in L.E.D. light, and a retractable tool hook. It's perfect for various trades like mechanical, electrical, plumbing, and more, and accepts SDS - PLUS bits. XGT is a comprehensive system of equipment, tools, batteries, and chargers using 40v max lithium - ion batteries. It's designed for high - demand jobs, with advanced brushless motor engineering, smart digital communication, and great durability to outperform the competition.
Using the Makita GRH01M1 is straightforward. First, charge the 40V max XGT 4.0Ah Battery using the 40V max XGT® Rapid Optimum Charger. Once charged, insert the battery into the rotary hammer. Select the appropriate bit for your job and insert it into the tool as it accepts SDS - PLUS bits. You can choose from three modes: 'Rotation Only', 'Hammering with Rotation' or 'Hammering Only'. Use the variable speed dial and trigger to match the speed to your application. If you're using the dust extraction feature, connect the dust extractor according to the instructions. When the tool starts, the dust extractor will automatically turn on if using the AWS® system. Important things to note: Don't force the bit if it gets stuck. The torque - limiting clutch is there to protect the gears, but it's better to avoid situations where the bit binds. Also, be aware that the AFT® will turn off the motor if the bit's rotation suddenly stops. For maintenance, keep the tool clean. After use, wipe it down with the cloth towel provided. Regularly apply the grease to moving parts as recommended. Store the tool in a dry place, and if you're not using it for a long time, remove the battery to avoid over - discharge.
