Bosch GWX 9-125 S Professional angle grinder 12.5 cm 11000 RPM 900 W 2.1 kg

The Bosch GWX 9-125 S Professional angle grinder is a compact and lightweight power tool designed for a range of grinding and abrasive tasks. It accepts a 125 mm (12.5 cm) grinding disc and runs at a maximum no-load speed of 11,000 RPM. With a 900 W input and a net weight of 2.1 kg, this grinder combines adequate power with easy handling for both professional and DIY applications. The tool is configured for AC mains operation and features a narrow body profile (approx. 73 mm width and 100 mm height) to aid access in confined spaces.

Advantages

The unit offers a balance of power and portability: a 900 W motor provides effective cutting and grinding performance while the 2.1 kg weight reduces operator fatigue during extended use. The 125 mm disc diameter is a commonly used size that supports a wide range of abrasive wheels and accessories. Its compact dimensions and ergonomically narrow housing improve control and allow work in tighter areas. The design and construction follow professional standards for durability and routine workshop use.

Suitable for

• Metal cutting and grinding
• Removing rust and paint with abrasive discs or wire brushes
• Masonry surface dressing and small-scale tile cutting
• Sanding and shaping composite or wood materials with appropriate attachments
• General workshop and construction site maintenance tasks

Key specifications

• Disc diameter: 125 mm (12.5 cm)
• Maximum no-load speed: 11,000 RPM
• Input power: 900 W
• Output power (nominal): 450 W
• Weight: 2.1 kg
• Power supply type: AC mains
• Approximate width: 73 mm
• Approximate height: 100 mm
• Product colour: Black, Blue

How to use

Before use, fit a suitable 125 mm disc or accessory and ensure the guard is correctly positioned and tightened. Connect the grinder to a compatible AC power outlet and hold it with both hands, using the auxiliary handle for additional control if required. Start the tool and allow it to reach full speed before contacting the workpiece. Apply steady, moderate pressure; avoid forcing the grinder to prevent overload. After finishing, release the switch and wait until the disc stops completely before setting the tool down. Follow all safety instructions provided by the accessory manufacturer and Bosch.

Recommendations

Use appropriate personal protective equipment including eye and hearing protection, gloves, and dust mask. Select discs rated for the grinder's maximum speed and for the intended material. For extended or heavy-duty tasks, allow the tool to cool periodically to maintain performance and longevity.