Bosch GBR 18V-15 S – 18V Concrete Grinder, 125 mm, brushless, bare tool

The Bosch GBR 18V-15 S Professional is an 18V cordless sander/grinder with a high-performance brushless motor, designed for working with concrete, stone, marble, and screed. It offers professional tool power with the convenience of cordless operation, ideal for deburring, sanding, and residue removal. Supplied as a bare tool (without battery).

The Bosch GBR 18V-15 S Professional (code 0601776201) represents the synthesis of power, portability, and practicality: a tool designed for construction sites, renovations, and work on concrete, stone, marble, or screed surfaces. The brushless motor ensures excellent material removal and long life, maintaining high performance even under heavy loads. 

The grinder is compatible with 125 mm discs with an M14 fitting, and has an adjustable no-load speed from ~ 2,600 to 8,500 rpm, to precisely adapt to different applications—from sanding and deburring to removing adhesives or residues on mineral surfaces. 

Thanks to the rotating auxiliary handle and the movable protective guard, the GBR 18V-15 S allows easy access even in difficult spots and enables effortless flush grinding with edges and corners. In addition, it is compatible with the dust extraction system via the Click&Clean interface, facilitating a cleaner working environment.

The "Professional" and cordless version is convenient for those who need freedom of movement on construction sites, without cord restrictions. Bosch also offers it as a "naked" tool (body only), ideal for those who already own 18V system batteries.

This concrete grinder is ideal for bricklayers and construction workers who have the Bosch Professional 18V battery system available. The 125 mm disc is top quality and allows for easy work on larger surfaces. The combination of accessory and machine ensures that the user has a highly professional solution free from wires and extensions on the construction site. The speed selector can be set to 3 different modes via the dedicated button on the tool body. The brush cowl is already set up to connect without adapters to Bosch Professional series vacuum cleaners.

User Benefits

Powerful brushless motor → high material removal and long life. 

18V Cordless → maximum mobility on site, without dependence on power outlets.

Speed regulation (2,600-8,500 rpm) → versatility: from fine sanding to aggressive deburring. 

Compatibility with 125 mm M14 discs → wide choice of abrasive tools, including diamond, for various materials. 

Rotating auxiliary handle → easy work even in tight spaces or difficult corners. 

Movable protective guard + dust extraction system (Click&Clean) → greater safety and a cleaner working environment. 

18V / AMPShare system compatibility → if you already have compatible batteries, you can use them without having to buy a new complete kit.

Standard equipment / Notes

Bare tool (without battery and charger) — "body only" version. 

Compatible with 125 mm discs (ideally diamond discs for concrete / stone). 

Can be connected to a vacuum cleaner via the Click&Clean system for dust management. 

Who is it for

Construction workers, bricklayers, concrete or stone floor layers who need to sand, deburr, or remove surface layers.

Restorers, stonemasons, or craftsmen working on stone, marble, or screeds who want a powerful and versatile cordless tool.

Professionals working on mobile construction sites or in locations without power outlets who need portable tools.

Those who already own Bosch / AMPShare 18V system batteries and want to add a professional grinder without having to buy a complete kit.

Situations where work is required in confined spaces, corners, or hard-to-reach areas: the rotating handle and compact design make it suitable.

FAQ – Frequently Asked Questions

Does the GBR 18V-15 S come with a battery and charger?

No — version 0601776201 is "bare tool," without battery or charger. 

What materials can I work with this grinder?

It is suitable for concrete, stone, screed, marble, removal of glue residues or coatings on mineral substrates. 

Can I use diamond discs?

Yes — it is compatible with 125 mm diamond discs, very useful for concrete, stone, and hard materials. 

Is it possible to vacuum dust directly?

Yes — thanks to the Click&Clean interface, a vacuum cleaner can be connected to reduce dust during sanding. 

Is it suitable for precision work or only demolition/rough sanding?

It is primarily designed for deburring, sanding, material removal, or work on rough or mineral surfaces; it is not suitable for finishing wood or metal — for those, specific tools should be used.