Angle Grinder Bosch GWS 9-125 S 125 mm — handheld power tool for cutting and grinding

Bosch GWS 9-125 S 125 mm is a handheld angle grinder designed for cutting, grinding and surface preparation. The tool accepts 125 mm discs and is compatible with X-LOCK mounting, offering quick accessory changes. Its compact housing and auxiliary handle enable controlled two-handed operation for a range of professional and DIY tasks on metal, masonry and construction materials.

Advantages

The compact design reduces operator fatigue while delivering high rotational speed for efficient material removal. X-LOCK compatibility simplifies disc replacement without tools, and the auxiliary handle provides improved stability and control. The grinder’s housing and ventilation layout are designed for reliable cooling during continuous use, and the tool is engineered to balance power and maneuverability for confined or overhead work.

Suitable for

• Cutting metal sheets, pipes and rebar
• Grinding welds and removing rust from metal surfaces
• Surface preparation of masonry and concrete
• Cutting tiles and small stone elements
• Light to medium construction and renovation tasks

Key specifications

• Disc diameter: 125 mm
• Mounting system: X-LOCK compatible
• Form factor: handheld angle grinder with auxiliary handle
• Application types: cutting, grinding, surface preparation
• Housing: compact design for improved handling

How to use

Before use, select an appropriate 125 mm disc for the intended task and ensure it is X-LOCK compatible if using X-LOCK accessories. Attach the auxiliary handle in the preferred position for a secure two-handed grip. Check that the workpiece is clamped or stable, and that personal protective equipment such as eye protection, gloves and hearing protection is worn. Start the grinder while clear of the workpiece, then apply steady, moderate pressure to the surface while maintaining control of the tool. Allow the disc to reach full speed before engaging the material and avoid forcing the grinder; let the tool do the work. After completing the task, switch off the tool and wait for the disc to stop completely before setting it down or changing accessories.

Usage recommendations

Use discs rated for the material and for a 125 mm diameter. Regularly inspect discs for damage, replace worn or cracked discs immediately, and follow manufacturer safety guidelines for mounting and operation. For extended use, allow intermittent cooling periods and keep ventilation slots clear of debris to maintain motor performance.