DeWalt 9" Angle Grinder

Using DeWalt’s 9" Angle Grinder, model DWE4559N, has been a game-changer in terms of power and efficiency for heavy-duty grinding tasks. As someone who frequently works on demanding projects, I was eager to put this tool through its paces, and it didn’t disappoint.

Power and Performance

The standout feature of this grinder is its 4.7 HP motor, which delivers an impressive 6,500 RPM. This level of power ensures that the tool can handle even the most stubborn materials with ease, providing consistent performance under load. During my usage, whether it was grinding down thick layers of adhesive on concrete or tackling tough metalwork, the grinder maintained its speed and didn’t falter. This is a crucial advantage for anyone working on projects where power consistency is essential.

Ergonomics and Usability

At 12.1 lbs, the grinder is relatively lightweight for its category, and this significantly reduces user fatigue during prolonged use. The inclusion of a 3-position side handle is a thoughtful addition, allowing for versatile handling and better control. This flexibility is particularly useful when navigating tight spaces or working on intricate surfaces. However, it’s worth noting that the tool does not have a palm rest on top, which could have added an extra layer of comfort, especially during extended sessions.

Safety Features

One of the most appreciated features is the Anti-vibration trigger handle. This feature minimizes the vibration transmitted to the user’s hand, making it much more comfortable to use over long periods and reducing the risk of strain or injury. Additionally, the automatic turn-off brushes are a great safety measure. They ensure the tool shuts down when the brushes need replacement, preventing potential damage and prolonging the life of the tool.

However, a notable absence in the safety department is the lack of a locking switch. While this might be a safety feature to prevent accidental startups, it does mean you have to keep the trigger pressed during operation, which can be a bit cumbersome. This is a trade-off between safety and convenience, and depending on your preference, it might be a minor inconvenience.

Durability and Maintenance

The Dust Ejection System is another highlight, playing a crucial role in protecting the motor from particles and increasing brush life. This is particularly beneficial when working in dusty environments, as it helps maintain the tool’s performance and reduces the frequency of maintenance. I found that even after extensive use in dusty conditions, the grinder continued to perform reliably, which speaks volumes about its durability.

The low-profile gearcase is also a thoughtful design element. It allows the grinder to access tight areas that might be challenging for bulkier tools. This makes it versatile enough for a range of applications, from large surface areas to more confined spaces.

Practical Applications

In my experience, this grinder excels in both construction and metalwork applications. For instance, I used it to clean a concrete floor that had a heavy residue of glue from previous tiling. Equipped with a 7" diamond wheel and a dust catcher, the grinder swiftly removed the adhesive, and the dust containment was effective, keeping the workspace clean and manageable.

On the metalwork front, the grinder proved its worth in cutting and grinding metal pipes and sheets. The power and speed were more than adequate for these tasks, making quick work of materials that other grinders might struggle with.

Areas for Improvement

While the grinder performs exceptionally well, there are areas where it could be improved. The absence of a locking trigger can be a drawback for some users, as it requires continuous pressure to operate. This might not be ideal for tasks that require prolonged use. Additionally, the lack of a palm rest might affect comfort during extended periods of operation.

Final Thoughts and Recommendation

Overall, the DeWalt 9" Angle Grinder, model DWE4559N, is a robust and reliable tool that delivers on power and performance. Its ergonomic design, coupled with safety and durability features, makes it suitable for a wide range of heavy-duty applications. Despite minor shortcomings like the lack of a locking switch and palm rest, the grinder’s strengths far outweigh these issues.

I would highly recommend this tool for professionals and serious DIYers who need a powerful and dependable grinder. Its ability to maintain high operating speeds under load, combined with user-friendly features like the Anti-vibration trigger handle and Dust Ejection System, makes it a valuable addition to any toolkit. Whether you’re working on construction, metalwork, or other demanding projects, this grinder is a worthy investment that will undoubtedly enhance your productivity and efficiency.