Angle grinder DeWALT DWE4157, 900 W, 125 mm disc, 11 m/s² grinding vibration, 11800 RPM, soft grip

The DeWALT DWE4157-QS angle grinder is a compact, mains-powered tool designed for grinding, cutting and surface preparation. It is equipped with a 900 W motor delivering up to 11,800 RPM at no load and accepts 125 mm (12.5 cm) discs with an M14 spindle thread. With a length of 270 mm, a height of 80 mm and a weight of 2.05 kg, the tool combines high rotational speed with a lightweight, ergonomic body finished in DeWALT’s yellow and black colour scheme.

Advantages

The brush motor provides stable power for demanding tasks while the high no-load speed ensures efficient material removal and fast cutting. The compact dimensions and modest weight improve manoeuvrability in confined spaces and reduce user fatigue during extended use. The M14 spindle thread makes disc changes straightforward and compatible with a wide range of standard abrasive and cutting consumables. The rigid housing and balanced design support controlled operation and consistent performance.

Suitable for

• Grinding metal edges and weld seams
• Cutting steel, rebar and metal profiles
• Removing rust, paint and scale from surfaces
• Shaping and smoothing masonry and stone with appropriate discs
• General workshop and on-site metal fabrication tasks

Key specifications

• Motor power: 900 W
• Maximum no-load speed: 11,800 RPM
• Disc diameter: 125 mm (12.5 cm)
• Spindle thread: M14
• Length: 270 mm
• Height: 80 mm
• Weight: 2.05 kg
• Power supply: AC (mains)
• Colour: Yellow and Black

How to use

Before use, fit a disc suitable for the intended task and ensure it is compatible with a 125 mm diameter and M14 thread. Check that the power is disconnected while changing accessories. Hold the grinder with both hands—one on the main body and the other on the auxiliary handle if fitted—to maintain control. Start the tool and allow it to reach full speed before applying it to the workpiece. Use steady, even pressure and avoid forcing the disc into the material. After finishing, switch off the power and wait for the disc to stop completely before setting the tool down or changing accessories.

Usage recommendations

For safe operation, always wear suitable personal protective equipment such as eye protection, hearing protection, gloves and respiratory protection where dust is present. Use discs rated for the grinder’s maximum speed. Allow regular breaks during prolonged work to avoid overheating the motor and reduce user fatigue. Follow local electrical safety rules and the manufacturer’s maintenance guidance for brushes and ventilation openings to maintain reliable performance.