10 Best Variable Speed Angle Grinders 2025 in the United States

The Milwaukee 2880-20 M18 FUEL Brushless Lithium-Ion Angle Grinder is a strong contender in the variable-speed angle grinder category, appealing especially to DIY enthusiasts and professionals looking for a reliable cordless option. One of its main strengths is the brushless motor, which provides 800 watts of power and reaches a maximum speed of 8500 RPM, ensuring efficient grinding and cutting applications. The grinder features variable speed control, giving users the flexibility to adjust the speed for different tasks, enhancing precision and control.

User safety is a priority with this model, as it includes an electronic clutch for kickback protection and overload protection to extend motor life. The anti-vibration side handle enhances comfort during extended use, making it suitable for longer projects.

However, the Milwaukee 2880-20 is not without its drawbacks. It is a tool-only product, meaning batteries are sold separately, which could be an additional expense if you don’t already own Milwaukee's M18 battery system. The weight at nearly 5 pounds might be a little heavy for some users, especially during prolonged usage. Additionally, while the grinder is compatible with common grinding accessories, users who require a wider array of attachments might find its spindle size limiting.

In terms of build quality, Milwaukee is known for durability, and this model comes with a 5-year warranty, providing peace of mind for buyers. This angle grinder is ideal for those looking for a powerful, versatile tool for various grinding tasks, but potential buyers should consider battery compatibility and weight before making a purchase.

The Milwaukee Electric Tool M18 Fuel 4-1/2" / 5" Variable Speed Angle Grinder is a battery-powered tool, which provides the convenience of cordless operation. This grinder is suitable for those who need a portable and versatile tool. The disc size flexibility between 4-1/2 inches and 5 inches adds versatility, allowing you to tackle a variety of grinding and cutting jobs. The variable speed control feature is a significant advantage as it allows you to adjust the speed based on the task at hand, providing greater control and precision.

Ergonomically, the angled style and lightweight design make it easier to handle and use for extended periods without excessive fatigue. The build quality and durability are expected to be high given the brand's reputation and the use of iron material, ensuring a long-lasting tool. However, being battery-powered might limit its use for very heavy-duty tasks compared to corded models. Additionally, the need to manage battery life and charging could be a drawback for continuous, long-duration use.

This angle grinder is ideal for DIY enthusiasts, professionals who need a reliable, portable tool, and those working in environments where corded tools are impractical.

The Milwaukee 2889-20 M18 4-1/2" - 5" Variable Speed Braking Grinder offers a range of features that make it a versatile tool for various grinding tasks. One of its standout strengths is its variable speed control, with five settings between 3,500 RPM and 8,500 RPM. This allows users to adjust the speed based on the material they're working with, providing greater control and precision. The braking feature is another strong point, stopping most wheels in under 2 seconds, which enhances safety during use.

The grinder is also designed with user comfort in mind, featuring a slide switch to reduce fatigue during prolonged use and tool-free guard adjustments for quick and easy setup changes. Additionally, tool-free accessory changes with the integrated FIXTEC nut technology streamline the process, making it more convenient for users. However, this grinder is a bare tool, meaning it does not include batteries, so users will need to purchase them separately if they don't already have compatible ones. At just 1 pound, it is lightweight, which can be beneficial for ease of handling, though some users might find it less robust for heavier tasks.

The build quality is generally reliable, given Milwaukee's reputation, but it's essential to consider the wattage of 158 watts, which may be on the lower end for very demanding jobs. This grinder is suitable for users who need a flexible, user-friendly tool for light to medium grinding tasks and value safety and ease of use.