Angle grinder Bosch GWS 12-125 Professional — 1,200 W, for 125 mm discs

Bosch GWS 12-125 Professional is a 1,200 W angle grinder designed for use with 125 mm discs for cutting, grinding and surface preparation. The tool provides steady power for metalworking and masonry tasks in workshops and on construction sites. It accepts standard 125 mm abrasive and cutting discs and is suitable for operations such as cutting steel, removing rust, deburring and preparing surfaces before welding or painting.

Advantages

The grinder delivers a compact balance of power and control with a 1,200 W motor that maintains consistent speed under load. Its compatibility with common 125 mm discs ensures wide availability of consumables and easy replacement. The tool's design supports precise handling for straight cuts and controlled material removal while offering professional-level performance for frequent use in trade and construction contexts.

Suitable for

• Cutting steel rods, pipes and metal profiles with 125 mm cutting discs
• Grinding welds and removing excess material during fabrication
• Removing rust, scale and old paint from metal surfaces
• Light masonry cutting and surface dressing on brick or concrete
• Deburring edges and preparing surfaces for welding or coating

When it may not be suitable

This angle grinder is intended for use with 125 mm discs, so it is not suitable for applications that require larger disc diameters or specialized attachments incompatible with 125 mm tooling. It is designed for cutting, grinding and surface preparation but may be less efficient for heavy-duty demolition tasks that demand larger, higher-powered machines.

Key specifications

• Rated power: 1,200 W
• Disc diameter: 125 mm
• Primary applications: cutting, grinding and surface preparation
• Suitable materials: metal and masonry (brick, concrete)
• Tool type: handheld angle grinder

How to use

Fit a compatible 125 mm disc according to the disc and guard manufacturer's instructions, ensuring the disc is mounted securely and the guard is in place. Hold the tool with both hands using the main handle and auxiliary handle for control. Start the grinder and allow it to reach full speed before applying it to the workpiece. Use steady, even pressure and move the tool along the cut or grind line without forcing the disc. After completing the task, switch off the tool and wait for the disc to stop before setting it down. Always follow safety guidelines for eye, ear and hand protection and ensure adequate ventilation when working with materials that produce dust.

What to consider before purchase

• Confirm that your typical tasks are compatible with a 125 mm disc size and the 1,200 W power class
• Check availability and types of 125 mm discs for cutting, grinding and abrasive use
• Consider required accessories such as replacement discs, a spare guard, or auxiliary handle options
• Ensure you have appropriate personal protective equipment: safety glasses, gloves, hearing protection and dust mask

Usage recommendations

For consistent results, use discs rated for the material being worked and match disc RPM limits to the grinder's operating speed. Replace worn or damaged discs immediately and maintain the tool by keeping vents clear and inspecting the power lead for damage. When performing extended work, allow intermittent cooling periods to avoid overheating the motor and discs.