Makita DGA504Z vs DGA508Z: Which 18V Angle Grinder is Right for You?

When it comes to professional-grade cordless angle grinders, Makita's 18V LXT range delivers exceptional performance and reliability. Two standout models in their lineup are the DGA504Z and DGA508Z – both 125mm brushless angle grinders that share the same platform but offer distinct features. This guide will help you understand the key differences and choose the right tool for your needs.

Purchase Options

Ready to add one of these premium Makita grinders to your toolkit?

Both models are available as skin-only units, allowing you to use your existing Makita 18V LXT batteries and chargers.

Makita DGA504Z 18V Mobile Brushless 125mm Angle Grinder Skin Only	Makita DGA508Z 18V Brushless Cordless Angle Grinder 125mm Paddle Switch

Overview

Both the DGA504Z and DGA508Z are part of Makita's premium 18V LXT brushless cordless system, designed for cutting, grinding, and finishing applications across metal, masonry, and other materials.

Key Specifications Comparison

Key Features

Makita DGA504Z

The DGA504Z is Makita's compact and mobile brushless angle grinder, engineered for professionals who need reliable performance in a lightweight package.

Standout Features:

• Brushless motor technology for extended runtime and durability
• Compact, ergonomic design for reduced operator fatigue
• Electronic current limiter protects the motor from overload
• Soft start feature for smooth, controlled operation
• Compatible with all Makita 18V LXT batteries

Makita DGA508Z

The DGA508Z builds on the proven DGA504Z platform with enhanced features for demanding professional applications.

Standout Features:

• Advanced brushless motor with optimized power delivery
• Automatic torque Drive Technology (ADT) adjusts speed and torque during operation
• Active Feedback Sensing Technology (AFT) shuts down the tool if rotation speed suddenly decreases
• Electric brake for maximum productivity
• Enhanced dust and water resistance (IPX4 rating)

Performance Comparison

Power & Runtime: Both models deliver comparable cutting and grinding performance thanks to their brushless motors. The DGA508Z's ADT technology provides slightly better efficiency under heavy loads.

Safety: The DGA508Z takes the lead with AFT technology, which detects sudden speed drops (such as kickback situations) and automatically shuts down the motor for enhanced operator safety.

Durability: While both are built to professional standards, the DGA508Z's IPX4 rating offers superior protection against dust and water ingress, making it better suited for harsh jobsite conditions.

Control: The DGA508Z's electric brake stops the disc quickly after releasing the trigger, improving productivity and safety between cuts.

Applications

Both grinders excel at:

• Metal cutting and grinding
• Concrete and masonry work
• Weld cleaning and finishing
• Rust and paint removal
• General fabrication tasks

The DGA508Z is particularly well-suited for:

• High-volume professional use
• Demanding jobsite environments
• Applications requiring frequent start/stop cycles
• Work in wet or dusty conditions

Which One Should You Choose?

Choose the DGA504Z if:

• You need a reliable, professional-grade grinder at an accessible price point
• You're looking for a lightweight, maneuverable tool for general applications
• You already own Makita 18V LXT batteries and want to expand your cordless toolkit

Choose the DGA508Z if:

• You require advanced safety features like AFT for demanding applications
• You work in harsh environments where dust and water resistance matters
• You value the productivity gains from electric brake and ADT technology
• You're a professional tradesperson who relies on your tools daily

Shipping Information

✓ Free standard shipping included
✓ Express Post available
✓ Same-day dispatch on orders placed before 2:30pm
✓ Australian stock ready to ship

Final Thoughts

Both the Makita DGA504Z and DGA508Z represent excellent value in the professional cordless angle grinder category. The DGA504Z offers outstanding performance and reliability for general use, while the DGA508Z provides advanced safety features and enhanced durability for the most demanding professional applications.