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 Metabo HPT 4-1/2-Inch Angle Grinder is a solid choice for light to medium grinding tasks. It features a 6.2 amp motor delivering 980 watts of power, which provides enough strength for general grinding jobs but might struggle with very heavy-duty work. Its disc size is 4.5 inches, which is standard and versatile for many applications. This model does not have variable speed control, so speed adjustments for different materials or delicate jobs are not possible.

Weighing just 4 pounds, it’s compact and lightweight, making it comfortable to use for longer periods and easier to handle in tight spaces. The ergonomics benefit from a smaller grip designed to reduce hand fatigue and a removable forward-canted side handle that suits both right- and left-handed users. Safety features include a left-mounted slide switch with a quick-off function, which helps you stop the grinder quickly if needed, and a spindle lock for easy wheel changes. Its aluminum construction and a new labyrinth seal design help protect internal parts from dust and debris, contributing to durability.

The included hard case and extra grinding wheels add good value. The 1-year warranty provides some peace of mind. This grinder is a practical tool for homeowners and DIY enthusiasts who want a lightweight, reliable angle grinder without the need for variable speed settings or heavy industrial power.

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.