Makita 40V Max XGT Brushless Cordless 4‑1/2” / 5" Angle Grinder Kit, with Electric Brake (4.0Ah) - GAG01M1
The Makita XGT brushless cordless 5 Inch cut-off angle grinder is powered by a Makita-built 40 Volt brushless motor that delivers an operating speed of 8500 RPM for heavy-duty applications. Grinder offers more cutting speed when cutting 5/8 Inch rebar that helps in cutting a wide range of materials such as tile, concrete, pipe, conduit and more. Electric current limiter reduces the overloading of motor in high torque applications. Automatic speed change mechanism adjusts the speed and torque automatically depending upon the applications. Electric brake ceases the grinding in just 2 seconds or less. If the rotation of the wheel comes to a stop, the active feedback-sensing technology turns off the motor immediately. Lock-on sliding switch offers good operating convenience and the quick guard rotation facilitates tool-less adjustments. Anti-restart mechanism prevents sudden initiation of the motor when the battery is inserted while the sliding switch is still on. Soft-start mechanism negates start-up reaction for easy initiation of the motor.
Features
- OUTPOWER: Makita-built brushless motor along with 40V max XGT® battery combine to deliver powerful grinding and up to 60% faster cutting speed than predecessor models*
- OUTSMART: Electric brake stops the grinding or cut-off wheel in 2 seconds or less for maximum productivity
- OUTLAST: Electronic current limiter helps protect the motor from overload in high torque application
- Active Feedback-sensing Technology (AFT) turns the motor off if rotation of the wheel is suddenly forced to stop
- Electric brake stops the grinding or cut-off wheel in 2 seconds or less for maximum productivity
- Anti-restart protection engineered to prevent motor start up when battery is inserted with switch locked on
- Slide switch with lock-on for operator convenience
- Quick guard rotation allows easy tool-less adjustment for increased productivity
- Soft start suppresses start-up reaction for smooth start-ups and longer gear life
- Spiral bevel gears for smoother rotations and a more efficient transfer of energy
What our Experts Think
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Cordless, Corded‑Grade Power — XGT brushless motor delivers performance comparable to a 13 A corded grinder with up to 60 % faster cutting speed on rebar and metal tasks.
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Smooth, Safe Operation — Electric brake stops the wheel in ≈2 seconds, boosting productivity and safety during frequent start‑stop cutting/grinding.
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Smart Protection & Control — Active Feedback‑Sensing Technology (AFT) shuts the motor off if wheel rotation is suddenly forced to stop, preventing kickback and tool stress.
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Ready‑to‑Work Kit — Includes 40V Max XGT 4.0 Ah battery, rapid charger, grinding wheel, guard, side handle, and carry bag for immediate job‑site use.
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Rugged, Job‑Site Ready — Digital communication and XPT™ protections help the grinder run reliably in dusty, demanding conditions.
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Versatile Cutting & Grinding — Accepts both 4‑1/2″ and 5″ discs, ideal for metal cutting, masonry grinding, pipe work, and tile prep.
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Pro Tip: Use with compatible high‑output batteries and stiffer discs for heavy steel or rebar cutting to maximize power delivery and run time.
Q&A
Q: What is the Makita GAG01M1 Angle Grinder Kit?
A: The Makita 40V Max XGT Brushless Cordless 4‑1/2″ / 5″ Angle Grinder Kit (GAG01M1) is a professional‑grade cordless grinder kit with electric brake, designed to deliver corded‑like performance for cutting and grinding jobs.
Q: What’s included in the kit?
A: It includes the 40V Max XGT brushless angle grinder with electric brake, 40V Max XGT 4.0 Ah battery, rapid charger, grinding wheel, guard, side handle, wrench, and tool bag.
Q: What applications is this tool suited for?
A: Ideal for grinding and cutting a variety of materials including metal, concrete, tile, pipe, and rebar — excellent for construction, fabrication, and industrial jobs.
Q: What are the performance highlights?
A: The brushless design and 40V Max XGT battery deliver up to 60 % faster cutting speed, and the electric brake stops the wheel in 2 seconds or less for improved productivity and safety.
Q: Who should use this kit?
A: Contractors, metalworkers, and pro users who need powerful, cordless grinding and cutting performance on demanding job sites.
Maintenance Tips
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Clean tool after each use — wipe down the grinder body and clear ventilation openings of dust/debris to prevent overheating and maintain airflow.
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Inspect and maintain discs — check grinding/cut‑off wheels for cracks, wear or damage; replace immediately to ensure safe, effective operation.
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Tighten guards & handles — before use, ensure the wheel guard, side handle, and fasteners are secure to reduce vibration wear.
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Protect battery contacts — keep 40V Max XGT battery and tool terminals clean and dry for consistent power transfer and to prevent corrosion.
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Use correct wheel size & type — always match wheel size to the grinder specs (4‑1/2″/5″) and application to avoid damage.
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Remove battery before servicing — detach battery before cleaning, changing wheels, or storing to avoid accidental starts.
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Charge & store batteries properly — charge before fully drained, avoid overheating or overcharging, and store packs in a cool, dry place.
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Store tool dry & cool — keep the grinder and batteries indoors away from moisture and extreme temperatures to protect electronics and components.
Damage 
Loss 
Theft 
