Milwaukee Angle Grinder Review

The Milwaukee 2780-20 is the flagship cordless grinder in the M18 FUEL lineup. It uses a brushless motor that delivers the power of a corded grinder while offering the freedom of battery operation. Owner reviews consistently praise its ability to handle heavy-duty cutting and grinding tasks without bogging down, even under load. The 4-1/2" and 5" wheel compatibility adds versatility.

The paddle switch design provides a natural grip and includes a lock-off button to prevent accidental starts. The tool is also equipped with a removable guard and a spindle lock for easy wheel changes. While it is heavier than some cordless models from other brands, the added weight is a trade-off for the robust build and high torque output. It is best paired with a Milwaukee High Output 8.0Ah or 12.0Ah battery for maximum runtime.

The Milwaukee 6148-30 is a classic corded grinder that offers excellent value. It is a simple, no-frills tool that delivers consistent power for cutting, grinding, and wire brushing. Owner reviews highlight its reliability and lightweight feel, making it easy to maneuver for extended periods. The 11,000 RPM no-load speed ensures fast cutting action.

The tool features a two-position side handle for comfort and control, along with a spindle lock for quick wheel changes. It uses a brushed motor, which is less efficient than a brushless motor but keeps the cost low. This model is a great choice for DIYers or professionals who need a backup grinder and have access to a power outlet. It is also one of the most popular grinders in its class for general metalworking.

The Milwaukee 2680-20 is a larger cordless grinder designed for users who need the cutting depth of a 6" wheel. It is built on the same M18 FUEL platform but with a larger gear case to accommodate bigger wheels. This makes it ideal for cutting through thicker materials like rebar, pipe, or metal studs in a single pass. Owner reviews note its impressive power and ability to handle tough cuts without stalling.

The tool features a paddle switch with a lock-off button and a tool-free guard adjustment. The larger size and weight (over 6 lbs with a battery) mean it is more tiring to use for overhead work, but the added leverage helps control the wheel during heavy cuts. It is best suited for professionals who regularly work with thick metal and need the extra cutting capacity that a 6" wheel provides.

The Milwaukee 2782-20 adds smart technology to the already powerful M18 FUEL grinder. It features a variable speed dial (2,000 to 8,500 RPM) that allows you to match the speed to the material, which is useful for polishing or working on stainless steel. The One-Key app enables users to track the tool via Bluetooth, set a lockout to prevent theft, and customize the speed settings.

Owner reviews appreciate the anti-kickback feature, which helps maintain control if the wheel binds. The tool also includes overload protection to prevent motor damage during heavy use. While the smart features add cost and complexity, they provide peace of mind for fleet managers or professionals who want to protect their investment. For most users, the standard 2780-20 offers the same core performance at a lower price.

The Milwaukee 2681-20 is a brushed cordless grinder that serves as an entry point into the M18 platform. It is a good option for DIYers or light professional use where the high cost of the FUEL models is not justified. Owner reviews say it handles general grinding and cutting tasks well, but it struggles under heavy continuous load compared to its brushless counterparts.

It features a side switch with a lock-off button and a removable guard. The tool is lighter than the FUEL models, making it easier to use for longer periods. However, the brushed motor means less runtime per battery charge and more wear over time. For users who already own M18 batteries, this is a cost-effective way to add a grinder to their kit without buying a top-tier model.