The Makita XAG12Z1 runs on two 18V LXT batteries in series for a combined 36V power output, driving a 7 in. paddle-switch cut-off/angle grinder at 7,800 no-load RPM. The electric brake stops the large disc in 4.5 seconds or less, and the paddle switch requires constant grip to keep the tool running. Designed for heavy-duty grinding, cutting, and surface preparation tasks that exceed the capacity of 4-1/2 in. / 5 in. grinders; tool only — batteries and charger sold separately.
Why use a 36V (18V X2) grinder instead of a single 18V model?
A 36V X2 configuration doubles the available voltage, delivering significantly more power and torque for demanding applications — thick metal plate, large concrete sections, and sustained heavy material removal. The 7 in. disc also covers far more surface area per pass than a 4-1/2 in. or 5 in. disc, making the XAG12Z1 far more productive for surface preparation and large weld grinding.
Does the XAG12Z1 require special 36V batteries?
No special batteries are needed. The XAG12Z1 uses two standard Makita 18V LXT batteries (in the dual-port battery housing). Any two BL1850B, BL1830B, or similar 18V LXT Star batteries will work. The 36V output comes from wiring the two batteries in series internally.
How long does the electric brake take to stop a 7 in. disc?
The electric brake on the XAG12Z1 stops the 7 in. wheel in 4.5 seconds or less — longer than the 2-second stop on smaller grinders due to the higher inertia of the larger disc, but still dramatically faster than an unassisted coast-down.
What is the difference between the XAG12Z1 and XAG22ZU1?
Both are 36V (18V X2) brushless 7 in. paddle-switch grinders with electric brakes. The XAG22ZU1 adds AWS (Auto-Start Wireless System), which uses Bluetooth to automatically activate a compatible Makita dust extractor when the grinder runs. If dust management is important, the XAG22ZU1 is the upgrade.
Can I use standard 7 in. cutting and grinding wheels on the XAG12Z1?
Yes, any 7 in. wheel with a 5/8 in.-11 arbor and an RPM rating at or above 7,800 RPM is compatible. Always verify the wheel's maximum RPM stamped on the label before mounting.
# Makita 18V X2 LXT (36V) Brushless 7 in. Paddle Switch Cut-Off/Angle Grinder with Electric Brake (Tool Only) **Model:** `XAG12Z1` **Brand:** Makita **Category:** Angle Grinder > The Makita XAG12Z1 runs on two 18V LXT batteries in series for a combined 36V power output, driving a 7 in. paddle-switch cut-off/angle grinder at 7,800 no-load RPM. The electric brake stops the large disc in 4.5 seconds or less, and the paddle switch requires constant grip to keep the tool running. Designed for heavy-duty grinding, cutting, and surface preparation tasks that exceed the capacity of 4-1/2 in. / 5 in. grinders; tool only — batteries and charger sold separately. ## Specifications | Attribute | Value | |---|---| | Product Type | Angle Grinder | | Voltage | 36 | | Platform | LXT X2 | | Disc Diameter In | 7 | | No Load Rpm | 7,800 | | Spindle Thread | 5/8 in.-11 | | Brushless | Yes | | Tool Only | Yes | | Battery Included | No | | Charger Included | No | | Weight (lbs) | 11.4 | | Warranty | 3-year limited | ## What's Included - angle grinder - wheel guard - side handle Source: https://www.jaspecs.com/makita/angle-grinder/xag12z1-makita-18v-x2-lxt-brushless-7-in-angle-grinder-tool-only/