Angle grinder Bosch GWS 18V-8 — 18V cordless, 125 mm disc, 11,000 RPM, M14 spindle

The Bosch GWS 18V-8 is an 18 V cordless angle grinder designed for cutting, grinding and surface preparation. It accepts 125 mm grinding discs, reaches up to 11,000 RPM no-load speed and uses an M14 spindle thread for standard accessories. The tool is compact and lightweight with a product weight of 1.6 kg and overall dimensions that support one-handed handling on site. It is battery-powered and intended for light to medium-duty metal and masonry tasks, renovation work and general on-site applications.

Advantages

The compact, lightweight design improves manoeuvrability and reduces operator fatigue during extended use. With an idle speed of up to 11,000 RPM and optimized runtime per battery charge, the grinder delivers fast cutting performance for light applications such as cutting rebar, metal sheets, PVC and tiles. The M14 spindle thread accepts a wide range of standard accessories, and compatibility with metal flange dust extractors helps reduce dust in the work area. Built-in safety functions including adjustable speed, kickback protection and restart protection increase user control and operational safety.

Suitable for

• Cutting rebar, metal sheets and thin structural steel
• Cutting and trimming PVC and ceramic tiles
• Deburring and light grinding of metal surfaces
• On-site renovation and maintenance tasks
• Work in confined spaces where a compact grinder is needed

When it may not be suitable

This cordless grinder is optimised for light to medium-duty jobs; it is not intended to replace heavy-duty corded grinders for prolonged industrial cutting or continuous high-load applications. For tasks that demand sustained maximum power well beyond typical light-duty use, a corded high-power grinder or a larger disc diameter tool may be more appropriate.

Key specifications

• Power source: Battery, battery voltage 18 V
• Grinding disc diameter: 125 mm
• No-load speed (max): 11,000 RPM
• Spindle thread: M14
• Weight: 1.6 kg
• Width: 226 mm
• Height: 115 mm
• Colours: Black, Blue

How to use

Fit a compatible 125 mm disc onto the M14 spindle and secure it with the flange according to the accessory manufacturer’s instructions. Use an appropriate 18 V Bosch battery and attach it securely before switching the tool on. Start the grinder at idle to check the disc runout, then engage the material with steady, controlled motions. Use the ergonomic grip to maintain control and follow the built-in safety functions such as kickback protection and restart protection. Allow the tool to cool and stop fully before changing discs or storing.

What to consider before purchase

• Intended application: light to medium-duty cutting and grinding rather than continuous heavy industrial use
• Battery system: requires an 18 V Bosch battery (battery and charger may be sold separately)
• Disc size and accessory compatibility: accepts 125 mm discs with M14 spindle thread
• Dust control: metal flange compatible with dust extraction systems for cleaner work areas

Usage recommendations

Use the Bosch GWS 18V-8 with recommended 125 mm discs for the specific material (cutting, grinding or sanding), ensure batteries are charged and matched to the Bosch 18 V system, wear appropriate personal protective equipment, and use dust extraction where possible to maintain a safer, cleaner workspace.