AT28 - Angle Grinder Mac Tools - Free user manual and instructions
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| Product Type | Angle Grinder |
| Brand | Mac Tools |
| Model | AT28 |
| Power Source | Corded Electric |
| Voltage | 120 V AC |
| Amperage | 10 A |
| No-Load Speed | 11,000 RPM |
| Wheel Diameter | 4-1/2 inches |
| Arbor Size | 5/8 inch UNC |
| Spindle Lock | Yes |
| Switch Type | Slide switch with lock-on |
| Safety Guard | Adjustable anti-kickback guard |
| Side Handle | Included (ergonomic) |
| Cord Length | 6 feet (1.8 m) |
| Weight | 4.6 lbs (2.1 kg) |
| Dimensions | 12.0 x 4.7 x 3.9 inches (30.5 x 12.0 x 10.0 cm) |
| Certification | ETL Listed |
| Maintenance | Keep air vents clean |
| Cleaning | Wipe with dry cloth after use |
| Safety Requirements | Wear safety goggles, gloves, and ear protection |
| Spare Parts | Available from Mac Tools distributors |
Frequently Asked Questions - AT28 Mac Tools
How do I replace the grinding wheel on my Mac Tools AT28?
To replace the wheel, first unplug the grinder. Press the spindle lock to secure the spindle, then use a wrench to loosen the flanged nut. Remove the old wheel, place the new wheel on the flange, and tighten the nut firmly. Always verify the wheel is rated for 11,000 RPM before use.
What is the correct operating speed for the AT28?
The Mac Tools AT28 operates at a no-load speed of 11,000 RPM. This is suitable for grinding and cutting with 4-1/2 inch wheels. Do not exceed the maximum speed marked on the accessory.
Can I use the AT28 as a cut-off tool?
Yes, the AT28 can be used for cutting when equipped with a 4-1/2 inch cut-off wheel. Install the appropriate guard and ensure the wheel is rated for grinding and cutting. Always cut in a straight line and avoid excessive force.
What safety equipment should I wear when using this grinder?
Always wear safety goggles, hearing protection, and heavy-duty work gloves. If grinding produces dust, use a dust mask. Secure loose clothing and remove jewelry. Also, ensure the workpiece is properly clamped.
How do I clean the AT28 after use?
Unplug the grinder and allow it to cool. Use a dry cloth to wipe the exterior and remove dust from the air vents with a soft brush. Do not use water or solvent cleaners, as they may damage internal components.
Why does my grinder vibrate excessively?
Excessive vibration is often caused by a worn or unbalanced wheel, a loose flange nut, or a damaged arbor. Inspect the wheel for cracks, ensure the nut is tight, and check that the arbor is not bent. Replace damaged parts immediately.
What is the warranty on the Mac Tools AT28?
Mac Tools provides a 1-year limited warranty against defects in material and workmanship. Keep your receipt and register the tool if required. For detailed warranty terms, contact your Mac Tools dealer.
Can I use diamond blades on this grinder?
Yes, 4-1/2 inch diamond blades with a 5/8 inch arbor can be used for masonry or tile cutting. Ensure the blade's maximum RPM rating is at least 11,000 RPM and use the appropriate guard.
How often should I replace the carbon brushes?
Carbon brushes should be inspected every 50 hours of use or when you notice sparking or loss of power. Replace both brushes at the same time with genuine Mac Tools replacement brushes.
Is the Mac Tools AT28 suitable for metalworking?
Absolutely. The AT28 is designed for grinding, sanding, and cutting metal. Use aluminum oxide wheels for steel and stainless steel. For surface blending, mount a flap disc for optimal results.
User questions about AT28 Mac Tools
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USER MANUAL AT28 Mac Tools
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Product information
Brand : Mac Tools
Model : AT28
Category : Angle Grinder