The Makita GRH08M1W is a revolutionary cordless rotary hammer kit designed for heavy - duty concrete applications. This 40V max XGT® brushless cordless 1 - 3/16' AVT® rotary hammer with a dust extractor is a game - changer. It can accept SDS - PLUS bits and is AFT® and AWS® capable, bringing you a cordless solution that matches the power of corded tools.
Powered by a 40V max battery and a Makita - built brushless motor, it offers outstanding power and performance for heavy - load tasks. 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 your specific job requirements.
Safety and comfort are top priorities. The Active Feedback - Sensing Technology (AFT®) shuts off the motor instantly if the bit rotation stops suddenly. The Anti - Vibration Technology (AVT®), an internal counterbalance system combined with vibration - absorbing handles, significantly reduces vibration, making your work more comfortable. The Extreme Protection Technology (XPT™) enhances dust and water resistance, ensuring durability in tough job site conditions.
The dust extraction feature of the GRH08M1W is OSHA Table 1 compliant, with options for an on - board HEPA Dust Extractor or a stand - alone AWS® Extractor. The Auto - Start Wireless System (AWS®), using Bluetooth® technology, allows seamless communication between the tool and the dust extractor (sold separately), powering the extractor on and off automatically with the tool, increasing productivity and reducing noise.
Other great features include constant speed control for optimal performance under load, a torque - limiting clutch to prevent gear damage, an electric brake for quick repositioning, a built - in LED light to illuminate the work area, an ergonomic soft - grip handle with a large 2 - finger trigger, and 3 operation modes for various applications. There's also a retractable hook to secure the tool when not in use.
The XGT system, utilizing 40V max lithium - ion batteries, is engineered for high - power, high - demand applications, enabling a complete transition to a cordless job site. It has advanced brushless motor engineering, intelligent digital communication, and superior durability features.
This kit includes a 40V max XGT® brushless 1 - 3/16' AVT® rotary hammer, a 40V max XGT® 4.0Ah battery, a 40V max XGT® rapid optimum charger, a dust extractor attachment with a HEPA filter cleaning mechanism, a side handle assembly, grease, a cloth towel, and a tool bag.














Using the Makita GRH08M1W is a breeze. First, charge the 40V max XGT® 4.0Ah battery using the included rapid optimum charger. Once charged, insert the battery into the rotary hammer.
Before starting work, select the appropriate operation mode ('Rotation Only', 'Hammering with Rotation' or 'Hammering Only') according to your task. You can adjust the speed using the variable speed dial and trigger to match the application.
If you're using the dust extraction feature, connect the AWS - equipped dust extractor (sold separately) to the tool via Bluetooth. The extractor will turn on and off automatically as you start and stop the tool.
When using the tool, always wear appropriate safety gear, like safety glasses and gloves. Avoid using the tool in wet or extremely dusty conditions, unless it's necessary. In such cases, the XPT™ technology will offer some protection, but still take extra care.
After each use, clean the tool with a dry cloth. Make sure to clean the dust extractor attachment and the HEPA filter regularly to maintain its efficiency. If you notice any abnormal vibrations or noises during operation, stop using the tool immediately and check for possible issues.
Store the tool in a dry and cool place, and keep it in the provided tool bag when not in use. Periodically check the battery for any signs of damage and make sure to charge it properly to prolong its lifespan.