Angle grinder Makita DGA504ZJ — 18V Li-Ion (6Ah), brushless motor, 125 mm disc, 8500 RPM, carrying case

The Makita DGA504ZJ angle grinder is a cordless 18V tool equipped with a brushless motor that improves efficiency and reduces maintenance. It accepts a 125 mm (12.5 cm) grinding disc and reaches up to 8,500 RPM at no load, enabling clean cutting and fast material removal on metal, masonry and other surfaces. At approximately 2.3 kg, the tool is compact and easy to maneuver for extended use on job sites or home projects.

Advantages

The brushless motor provides higher efficiency and longer runtime compared with brushed equivalents while reducing the frequency of service. Cordless operation on 18V Lithium-Ion batteries eliminates the need for a power cord and increases mobility on site. The relatively high idle speed combined with a 125 mm disc diameter offers a balance between power and control for grinding, cutting and surface preparation. The lightweight design improves handling and lowers operator fatigue during prolonged tasks.

Suitable for

• Grinding and deburring metal parts
• Cutting steel and rebar with appropriate discs
• Removing mortar or rust from masonry and metal
• Surface preparation before welding or painting
• DIY metalwork and construction site tasks

Key specifications

• Motor type: brushless
• Disc diameter: 125 mm (12.5 cm)
• Maximum no-load speed: 8,500 RPM
• Operating voltage: 18 V (Lithium‑Ion battery)
• Weight: approximately 2.3 kg
• Colour: black and blue

How to use

Select a disc appropriate for the material and task, secure it to the spindle according to the tool’s mounting instructions, and ensure the grinder’s guard is positioned to deflect sparks away from the operator. Insert a charged 18V Lithium‑Ion battery and check the tool’s rotation before applying it to the workpiece. Maintain a firm two‑hand grip, engage the trigger, and move the grinder steadily across the surface with controlled pressure; avoid forcing the disc into the material. Allow the tool to reach full speed before contact and let it slow to a stop after finishing work before setting it down.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, face shield, gloves and hearing protection. Match the disc type and maximum permitted disc speed to the task and replace worn or damaged discs. Keep vents clear for cooling, avoid prolonged continuous operation to prevent overheating, and follow battery charging and storage guidelines supplied with the battery pack. Inspect the tool before each use and secure workpieces to prevent movement while grinding or cutting.