The Bosch GWS 18V-11PS Professional is a cordless angle grinder designed for users who need a powerful yet portable tool for grinding, cutting or removing material on a variety of surfaces. It is suitable for DIYers, advanced hobbyists and professional craftsmen who value the freedom of cordless movement and a reliable and durable tool in the field or in the workshop.

This type of sander makes it easier to work where there are no electrical outlets or where mobility is key – for example when renovating a home, working on a large construction site or doing outdoor maintenance work. With its brushless motor, it enables a longer service life, less maintenance and energy efficiency from the battery, which means more work with a single charge. The disc diameter of 125 mm is optimal for universal use, as it allows for precise sanding and efficient cutting of both metals and other materials.

Evaluation of key product features

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The 18V cordless power supply allows you to use it anywhere, regardless of the proximity of a power outlet, making the tool particularly convenient for working in the field or on various job sites. The brushless motor not only significantly extends the tool's lifespan, but, combined with vibration control through the auxiliary handle, improves comfort, safety and allows for more precise control during extended work.

The 125mm disc diameter allows the user to work on a wide range of materials, from grinding stainless steel to removing rust or cutting sheet metal, without compromising portability or accuracy due to the size of the tool. This size is often sufficient for everyday maintenance and assembly work at home, in the garage or in the field.

As the tool does not come with a battery or charger, users can combine it with existing 18 V Bosch Professional batteries, which is convenient for those who already own other tools from the same series. This reduces the need for additional batteries and helps reduce the overall cost for multiple tools.

The one-year warranty covers basic safety of use, while in everyday use, good maintenance and proper use further contribute to reliable operation over time. The tool is a suitable companion for frequent or larger projects due to its robust construction and well-thought-out ergonomics.

It is important to know

This cordless angle grinder is primarily designed for users who are already using the Bosch 18V cordless system, as the package does not include a battery and charger. Before purchasing, it is crucial to consider your project requirements and your own preferences in terms of ergonomics and autonomy.

• Since the tool does not come with a battery or charger, you need to check whether you have compatible Bosch 18V batteries or whether you will have to purchase them separately.
• The 125 mm disc diameter provides a balance between accessibility in tight spaces and speed for processing small to medium-sized areas, but is not optimal for very large projects.
• The vibration control auxiliary handle improves comfort and control during longer or more demanding tasks, which is important when working overhead or on larger surfaces.
• The cordless drive allows use in places without electricity, such as apartments, field work sites or workshops, but the autonomy always depends on the selected batteries and the intensity of the work.

Source of editorial recommendations: general guidelines for product selection.

In practice

🔧 Working with materials (metal, concrete, tiles)

🟢 Fast and efficient rough grinding, cutting and surface preparation - especially suitable for working without access to an electrical outlet.

🏠 Home use and maintenance work

🟢 A good choice for most basic tasks around the house where standard performance and portability are sufficient.

🚗 Field work

🟡 Very useful on construction sites or during assembly, but autonomy depends entirely on the capacity and number of batteries owned by the user.

💡 Fine sanding - wood, lacquered surfaces

🔴 Less suitable for precise finishing of wood or delicate surfaces, where other types of sanders are more suitable.

Answers to frequently asked questions

Can I use my existing Bosch 18V battery?

Yes, if the battery is a Bosch Professional 18V, it is compatible and can be used with this tool.

What does “bare tools” mean in a kit?

This means that the product does not include a battery, charger, or additional accessories - only the sander with a handle is included.

Is the grinder suitable for cutting concrete or ceramic tiles?

It is suitable for light cutting of these materials, but it is recommended to use an appropriate cutting disc and regularly check the battery capacity.

How long can I work with one set of batteries?

The operating time depends on the battery capacity (Ah) and the complexity of the work, so we recommend using multiple batteries for more demanding projects.

Is it suitable for final sanding of wood?

Angle grinders are not an ideal choice for very fine sanding of wood or painted surfaces – other types of grinders are more suitable for this purpose.

Description updated: August 2026

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