Quick Answer
Makita's cordless angle grinder lineup centers on the 18V LXT platform, offering models from compact 76mm (3-inch) grinders to standard 4.5-inch/5-inch machines. The best choice depends on your primary task: for tight spaces and light cutting, the DMC300Z is the smallest 18V cordless angle grinder from Makita. For general grinding and cutting, the XAG04Z and XAG25Z are popular 4.5/5-inch brushless options. If you value quick disc changes, an X-LOCK model is also available.
Main Explanation: Decision Framework
Use this four-step framework to identify the right Makita cordless angle grinder for your work.
Step 1: Define Your Primary Task
- Detail work, pipe cutting, tight spaces: A small wheel (76mm / 3-inch) gives better access and control.
- General grinding, rust removal, cutting metal: A standard 4.5-inch or 5-inch wheel provides the power and disc availability you need.
Step 2: Choose the Wheel Size
- 76mm (3-inch) wheel: The Makita DMC300Z is described as the "SMALLEST 18V 76mm cordless angle grinder from MAKITA" in a review video. It is suitable for precision cuts and tight areas, but limited for heavy grinding.
- 4.5-inch / 5-inch wheel: The XAG04Z is a brushless cordless grinder that accepts both 4.5-inch and 5-inch discs. The XAG25Z is another 4.5/5-inch LXT model listed on eBay. These are the most versatile sizes.
Step 3: Evaluate Disc Change System
- Standard flange nut: Most Makita models, including the XAG04Z, use a standard nut and wrench.
- X-LOCK system: A cordless X-LOCK angle grinder (tool only) is available. X-LOCK discs snap on and off without tools. This model was priced at $119.99 on CPO Outlets.
Step 4: Compare Key Specifications from Sources
| Model | Wheel Size | Brushless? | Notable Feature | Approximate Price (Tool Only) |
|---|---|---|---|---|
| XAG04Z | 4.5-inch / 5-inch | Yes | LXT Lithium-Ion with 5.0Ah Battery (kit) | Listed on Amazon (price not given) |
| XAG25Z | 4.5-inch / 5-inch | Not specified | LXT platform | $87.98 New on eBay |
| DMC300Z | 76mm (3-inch) | Brushless | Smallest 18V Makita cordless grinder | Information not available from source |
| X-LOCK Cordless | 4.5-inch / 5-inch | Not specified | X-LOCK quick-change system | $119.99 (sale price, was $189.00) |
Note on pricing and availability: Prices and listings are based on research from third-party retailers and may change. The XAG04Z listing came with a 5.0Ah battery as a kit; the XAG25Z was listed as tool only on eBay. ## Practical Takeaways
- Match the grinder to your most common job. Buy the DMC300Z if you primarily work in tight spots; buy a 4.5/5-inch model for general use.
- Consider your existing battery system. All models above use Makita's 18V LXT batteries. If you already own Makita LXT tools, the tool-only versions (XAG04Z, XAG25Z, X-LOCK) are cost-effective.
- Decide on disc change speed. The X-LOCK system allows tool-free disc changes without a wrench, which can be faster than the standard nut system.
This article is based on publicly available product listings and independent reviews. No hands-on product testing was performed by the author.
