Bosch Professional 060139600A Review

Every metalworking project, every construction site, and every serious home workshop eventually needs to cut, grind, or polish something that a saw cannot touch. Cutting a steel reinforcing bar to length, grinding a weld smooth, removing rust from a metal gate before painting, cutting a paving slab to fit a corner, or sharpening a lawnmower blade — these are the jobs where an angle grinder earns its place as one of the most versatile tools in the workshop. A spinning abrasive disc running at over 10,000 revolutions per minute can cut through hardened steel, shape stone, strip paint, and polish metal to a mirror finish — all by changing the disc mounted on the spindle. The key to getting good results is matching the grinder's power, disc size, and speed to the task: too little power and the disc bogs down; too much weight and the tool becomes exhausting to control for fine work. For the DIYer, metalworker, or tradesperson who needs a reliable, mid-power angle grinder that handles everything from cutting rebar to finishing weldments, the 125 mm disc size and the 800 to 900 watt power band represents the sweet spot.

Bosch Professional — the blue tool line — has made the GWS series of angle grinders a staple of workshops and construction sites for decades. The GWS 880 sits in the mid-power range with an 880-watt motor driving a 125 mm disc at 11,000 rpm, making it suitable for cutting, grinding, and finishing work across metal, stone, and concrete. The compact body design and alloy steel construction are engineered for durability in professional environments, and the included accessories — protective guard, auxiliary handle, clamping nut, flange, and spanner — provide everything needed to start working out of the box. With over 6,500 reviews averaging 4.6 out of 5 stars and a bestseller rank of number 5 in angle grinders, this is one of the most validated tools in its category.

This review examines the Bosch Professional GWS 880 angle grinder. We look at the 880-watt motor performance, the 125 mm disc capacity, the 11,000 rpm no-load speed, and the build quality expected from the Professional line. We assess the ergonomics of the 1.9 kg body with its slim grip circumference, the spindle lock for quick disc changes, and whether this grinder represents the right balance of power, weight, and price for typical workshop and jobsite applications.

The GWS 880 is powered by an 880-watt corded electric motor running on standard 230-volt mains power, delivering a no-load speed of 11,000 rpm to the 125 mm disc spindle. The 880-watt rating places it in the mid-power category for 125 mm angle grinders — enough power for cutting steel reinforcing bar, metal pipe, and sheet metal without labouring, and sufficient for grinding weld beads, smoothing rough castings, and surface preparation. The 125 mm disc diameter is the most common size in the European market, giving access to an enormous range of cutting discs, grinding discs, flap discs, wire brushes, and polishing pads from dozens of manufacturers at competitive prices. The M14 spindle thread is the European standard, and the spindle lock button makes disc changes quick — press the button to lock the spindle, use the included spanner to loosen or tighten the clamping nut, and release.

The body is constructed from alloy steel with Bosch Professional's signature blue finish, and the slim grip circumference is a deliberate ergonomic choice. A thinner grip allows a more secure hold — your fingers wrap further around the body — which translates to better control, especially during one-handed cutting operations. The grinder weighs 1.9 kg without a disc, which is light enough for one-handed use during cutting but substantial enough to feel planted and stable during grinding where two hands on the tool provide the best control. The auxiliary handle can be screwed into either side of the gear housing or the top, accommodating left-handed and right-handed users and different working positions. The protective guard adjusts without tools — twist it to the desired position to shield yourself from sparks and disc fragments — and the guard is mandatory safety equipment that should never be removed during operation.

In daily use, the GWS 880 handles the core angle grinder tasks with competence. Cutting through 12 mm and 16 mm steel reinforcing bar with a 1 mm cutting disc is fast and clean; the motor maintains speed under load without the RPM drop that causes discs to bind and shatter. Grinding weld beads flat with a grinding disc requires sustained pressure against the workpiece, and the 880-watt motor provides enough torque to keep the disc cutting rather than glazing. For surface preparation — removing rust, paint, and mill scale with a wire cup brush or a flap disc — the 11,000 rpm speed produces efficient material removal, and the 1.9 kg weight keeps the tool manageable during extended sessions. The grinder does not have variable speed, soft start, or electronic speed regulation — features reserved for Bosch's higher-end GWS models — which means the motor starts immediately at full speed and the RPM will drop under heavy load.

The included accessories cover the essentials: the protective guard, the auxiliary handle, the clamping nut and flange for securing discs, and a spanner for tightening and loosening the nut. The grinder ships in a cardboard box rather than a carry case, which is typical for Bosch Professional tools at this price point — the expectation is that professionals will store the tool in their own tool chest or van racking. The spindle lock mechanism is robust, and the tool-free guard adjustment is genuinely convenient when switching between cutting — where the guard should be positioned between you and the disc — and grinding, where the guard position may need to change for access to the workpiece.

Customer feedback is exceptional both in volume and quality: 4.6 out of 5 stars from over 6,500 reviews. This is one of the most-reviewed angle grinders on the market, and the consistent rating over such a large sample provides strong confidence in reliability and performance. The bestseller rank of number 5 in angle grinders confirms its popularity. The grinder is manufactured in China with a manufacturer warranty and 2-year EU spare parts availability. At approximately 65 euros, the GWS 880 represents outstanding value — genuine Bosch Professional build quality, a proven motor, and the disc and accessory compatibility of the 125 mm ecosystem. For the metalworker, fabricator, plumber, electrician, or serious DIYer who needs a reliable all-round angle grinder, the GWS 880 has earned its reputation through decades of real-world use and thousands of positive reviews.

The Bosch Professional GWS 880 is ideal for metalworkers, fabricators, plumbers, electricians, and serious DIYers who need a reliable, mid-power angle grinder for cutting, grinding, and surface preparation across metal, stone, and concrete.