The Makita GRH09M1 is a top - notch cordless rotary hammer designed for heavy - load concrete applications. Powered by a 40V max XGT® lithium - ion battery and a Makita - built brushless motor, it offers the power, speed, and long run - time typically associated with corded tools, but without the hassle of cords. The quick - change chuck is a game - changer, allowing seamless switching from SDS - PLUS to 1/2' keyless chuck for using straight shank bits. With a fully charged 40V XGT® 4.0Ah battery, it can drill up to 135 of 3/8' holes. The variable speed dial and trigger let you adjust the speed according to the job at hand. Comfort and safety are well - considered. The Active Feedback - Sensing Technology (AFT®) shuts off the motor if the bit's rotation is suddenly halted. The Anti - Vibration Technology (AVT®), combined with vibration - absorbing handles, significantly reduces vibration. The Extreme Protection Technology (XPT™) enhances dust and water resistance, making it suitable for harsh job sites. This rotary hammer has dust extraction capabilities, compliant with OSHA Table 1, and can be paired with an on - board HEPA Dust Extractor or a stand - alone AWS® Extractor. The Auto - Start Wireless System (AWS®) uses Bluetooth® technology to automatically power on and off the dust extractor when the tool starts or stops, increasing productivity and reducing noise. Constant speed control adds power under load, and the torque - limiting clutch prevents gear damage. Additional features like an electric brake, a built - in L.E.D. light, an ergonomic soft - grip handle with a large 2 - finger trigger, and a retractable hook make it a user - friendly and versatile tool. It has three operation modes for different applications and is suitable for a wide range of trades. The XGT system, which includes equipment, tools, batteries, and chargers, is engineered for high - demand jobs, enabling a full transition to a cordless job site with its advanced features and superior durability.
Using the Makita GRH09M1 is straightforward. First, make sure the 40V max XGT® battery is fully charged. Then, choose the right bit for your job. You can easily switch between SDS - PLUS and 1/2' keyless chuck using the quick - change chuck. Adjust the speed using the variable speed dial and trigger based on the material and task. When drilling, keep the tool steady and let the hammer do the work. If the bit gets stuck, the torque - limiting clutch will protect the gears. The Active Feedback - Sensing Technology (AFT®) will turn off the motor if the bit suddenly stops rotating. For dust extraction, you can connect an on - board HEPA Dust Extractor or a stand - alone AWS® Extractor. When using the AWS®, pair the tool with the extractor via Bluetooth®. The extractor will automatically start and stop with the tool. Remember to wear safety goggles and ear protection. After use, clean the tool to remove dust and debris. Wipe it with a dry cloth. Store the tool in a dry place and keep the battery in a cool environment. Periodically check the battery for any signs of damage. If you notice any issues with the tool's performance, stop using it and contact Makita support.
