Milwaukee 2880-20 — M18 FUEL 4-1/2″/5″ Grinder w/ Paddle Switch
Milwaukee
M18 FUEL
⭐ 4.7/5
M18 FUEL
⭐ 4.7/5
Powerful cordless grinder with safety-first paddle switch — built for metalworkers and fabricators.
| Key Specifications | |
|---|---|
| Voltage | 18V |
| Motor | Brushless POWERSTATE |
| Max Speed | 9,000 RPM |
| Weight (bare tool) | 4.8 lbs |
| Disc Size | 4-1/2″ / 5″ |
| Spindle | 5/8″-11 |
| Switch | Paddle (No-Lock) |
| Street Price | $150–$180 |
Pros & Cons
✅ Pros
- No-lock paddle switch for maximum safety
- Corded-equivalent 9,000 RPM performance
- RAPIDSTOP brake halts disc in 2 seconds
- Overload protection prevents burnout
❌ Cons
- Gets warm during extended grinding sessions
- Guard adjustment tool not included
- Battery drains quickly on continuous use
🔋 Battery Compatibility
M18 5.0Ah minimum recommended. HIGH OUTPUT 6.0Ah or 8.0Ah for heavy grinding sessions.
🎯 Best For
- Metal grinding and deburring
- Cutting rebar and bolts
- Rust and paint removal
- Tile and masonry cutting with diamond blade
❓ Frequently Asked Questions
What’s the difference between paddle and slide switch?
Paddle switch requires constant grip pressure — releasing it stops the grinder immediately. Safer for cutting and grinding.
Can I use 5″ discs?
Yes — it accepts both 4-1/2″ and 5″ grinding, cutting, and flap discs.
Does it have a kickback brake?
Yes — RAPIDSTOP technology detects binding and stops the disc within 2 seconds to reduce kickback injuries.