Makita Angle Grinder

When tackling concrete grinding projects, having the right tool can make all the difference. The Makita GA7040S Angle Grinder is a powerful and versatile tool that transformed what I thought would be a daunting task into an efficient and manageable one. With its impressive 15.0 AMP motor and a no-load speed of 8,500 RPM, this grinder is built to handle heavy-duty applications with ease.

Performance and Power

From the moment I powered up the Makita GA7040S, I could feel the raw strength and efficiency of the motor. The soft start feature was a welcome addition, reducing the initial jolt and making the startup smoother. This is particularly beneficial for those who may not have extensive experience with high-powered tools, as it provides better control right from the get-go.

The grinder's power was put to the test on a cracked concrete floor, where it needed to grind and level significant raised differences. The performance was nothing short of outstanding. The tool made quick work of the uneven concrete, grinding down as much as a 3/4 inch raised difference with impressive speed and efficiency. This level of performance, combined with the tool's ease of use, made what I anticipated to be a strenuous project surprisingly straightforward.

Ergonomics and Comfort

One of the standout features of the GA7040S is its rotatable rear handle. This design choice makes a significant difference in comfort, especially during prolonged use. Whether you’re working at an awkward angle or need to adjust your grip, the rotatable handle ensures you can maintain a comfortable and secure hold on the tool. Additionally, the three-position vibration-absorbing side handle further enhances user comfort and control, reducing fatigue and allowing for extended use without discomfort.

The tool's overall length of 20-1/8 inches and net weight of 14.2 lbs provide a balanced feel that is both sturdy and manageable. While it is not the lightest grinder on the market, the weight contributes to its stability and effectiveness in heavy-duty applications.

Durability and Build Quality

Makita has a reputation for building robust and reliable tools, and the GA7040S is no exception. The grinder features spiral bevel gears, which ensure efficient energy transfer and a longer lifespan. The labyrinth construction is another smart design element, preventing debris from entering the motor and significantly extending the tool's life. Additionally, the zig-zag varnish on the armature coil provides extra protection against dust and debris, further enhancing durability.

The tool-less wheel guard is a practical feature that allows for quick and easy adjustments, making it convenient to switch between different tasks without the need for additional tools. The externally accessible brushes also add to the tool’s serviceability, allowing for straightforward maintenance.

Practical Use and Applications

In practical terms, the GA7040S is a beast when it comes to concrete grinding. The combination of power, ease of use, and ergonomic design makes it an ideal choice for both professional contractors and DIY enthusiasts tackling concrete projects. Whether you’re grinding down raised differences in concrete, smoothing out surfaces, or prepping for further work, this grinder delivers consistent and reliable performance.

However, it’s worth noting that the tool does generate a significant amount of dust, especially when used on concrete. While this is to be expected with such applications, it’s advisable to use a good quality dust shroud and ensure proper ventilation in the workspace to manage dust levels effectively.

Final Thoughts

The Makita GA7040S Angle Grinder is a high-performance tool that stands out in its class. Its powerful motor, ergonomic design, and durable build quality make it a reliable choice for a variety of grinding tasks. The soft start feature and rotatable rear handle add to its user-friendly design, making it accessible for users of all experience levels.

Would I recommend the Makita GA7040S? Absolutely. Its combination of power, ease of use, and durability makes it an excellent investment for anyone in need of a robust angle grinder. Whether you’re a professional looking for a reliable tool for heavy-duty tasks or a DIY enthusiast tackling concrete projects, the GA7040S is up to the challenge. Just be prepared for the dust and ensure you have the right accessories to manage it. All in all, this Makita grinder is a solid addition to any tool collection.