Milwaukee M18 Brushless Paddle Switch vs Milwaukee M18 FUEL 4-1/2 -: Spec Comparison
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
You are comparing the milwaukee m18 brushless paddle switch vs m18 fuel 4 1 2. Both are cordless angle grinders from Milwaukee. They share a brushless motor and a paddle switch design. The main difference is the wheel size capacity. One handles 4-1/2 and 5-inch wheels. The other supports 4-1/2 and 6-inch discs. This affects which abrasives you can use.
Key differences
| Aspect | Milwaukee M18 Brushless Paddle Switch Grinder | Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder |
|---|---|---|
| Wheel Diameter | 4-1/2 in / 5 in | 4-1/2 in. / 6 in. |
| Weight | 4.99 pounds | 6.39 pounds |
| Length | 13 inches | 16 inches |
| Safety Features | Electronic Clutch | Braking |
| Battery Included | No | No |
Which one should you choose?
Choose Milwaukee M18 Brushless Paddle Switch Grinder if
- You need a lighter tool for extended overhead work
- You primarily use 4-1/2 and 5-inch grinding discs
- You prefer electronic clutch kickback protection
Choose Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder if
- You frequently cut or grind with 6-inch discs
- You want the braking safety feature
- You do not mind the extra weight and length
Verdict: Choose the first model if you prioritize a lighter, more compact tool for smaller discs. Pick the second model if your work regularly requires 6-inch wheels and you value the braking system. Both are bare tools without batteries.
Specs Comparison: Grinder Sizes
Wheel Diameter Capacity
The Milwaukee M18 Brushless Paddle Switch Grinder (2880-20) supports 4-1/2-inch and 5-inch wheels. This makes it suitable for standard cutting and grinding tasks with common abrasive discs. In contrast, the Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder (3670-20) accommodates 4-1/2-inch and 6-inch wheels. The 6-inch capacity allows you to use larger discs for more aggressive material removal or wider cuts. If you frequently work with larger abrasives, the FUEL model offers greater versatility. Both tools accept 4-1/2-inch discs, ensuring compatibility with standard accessories.
Motor Type
Both grinders feature brushless motors. The Milwaukee M18 Brushless Paddle Switch Grinder uses a brushless design to improve efficiency and extend runtime. Similarly, the Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder also employs a brushless motor. Brushless motors generally provide longer life and better power management compared to brushed alternatives. Since both products utilize this technology, you get comparable performance benefits regarding maintenance and durability. There is no distinct advantage in motor type between these two specific models.
Weight and Portability
The Milwaukee M18 Brushless Paddle Switch Grinder weighs 4.99 pounds. This lighter weight can reduce fatigue during extended overhead or precision work. The Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder is heavier at 6.39 pounds. The additional weight may provide stability for certain cutting tasks but could lead to quicker arm fatigue. If you prioritize a lighter tool for all-day use, the 2880-20 model is the better choice. The 3670-20 model sacrifices some portability for its larger wheel capacity.
Safety Features
The Milwaukee M18 Brushless Paddle Switch Grinder includes an electronic clutch for kickback protection. It also offers overload protection to maximize motor life. The Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder highlights braking technology as a key safety feature. While both tools aim to enhance user safety, the specific mechanisms differ. The electronic clutch on the 2880-20 helps manage sudden torque changes. The braking feature on the 3670-20 likely aids in stopping the disc quickly. Both features address common grinder hazards, making this a close call.
Dimensions
The Milwaukee M18 Brushless Paddle Switch Grinder measures 13 inches in length, 8.5 inches in width, and 3.5 inches in height. The Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder is longer at 16 inches, with a width of 7 inches and a height of 4 inches. The 3670-20 model is physically larger due to its capacity for 6-inch wheels. This increased size may affect maneuverability in tight spaces. The 2880-20 model offers a more compact profile, which can be advantageous for detailed work or confined areas.
Which grinder fits your workflow
Need compact tool for tight spaces
The Milwaukee M18 Brushless Paddle Switch Grinder (2880-20) is smaller and lighter. It measures 13 inches long and weighs 4.99 pounds. This model supports 4-1/2-inch and 5-inch wheels. The compact size helps you maneuver in confined areas. The electronic clutch adds kickback protection. It is ideal for users who prioritize portability and ease of handling in small jobs.
Require larger wheel capacity for cutting
The Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder (3670-20) handles 6-inch wheels. This allows you to use larger discs for deeper cuts. The braking feature stops the wheel quickly for safety. It measures 16 inches long and weighs 6.39 pounds. If your work requires larger abrasive discs, this model offers the necessary capacity and braking power for professional tasks.
Prioritize safety with braking system
Safety is key when using high-speed tools. The Milwaukee M18 FUEL model includes a braking system. This feature stops the wheel rapidly to reduce injury risk. It also supports 6-inch wheels for more versatile grinding. The paddle switch allows for easy control. If you value quick shutdown capabilities and larger disc options, this grinder provides the necessary safety and performance specs.
The products compared
Milwaukee M18 Brushless Paddle Switch Grinder
Best for: M18 users needing paddle switch control
- Power Source
- M18 cordless
- Wheel Diameter
- 4-1/2 in / 5 in
- Motor Type
- Brushless
- Switch Type
- No-lock paddle switch
- Battery Included
- No (tool only)
- Included Tools
- Grinder
View on Amazon: Milwaukee M18 Brushless Paddle Switch Grinder Affiliate link
The Milwaukee M18 Fuel 4-1/2 in. grinder uses a brushless motor for efficient power delivery. It features a no-lock paddle switch for precise control. The tool weighs 4.99 pounds and measures 13 inches in length. It includes an electronic clutch for kickback protection. This bare tool requires a separate M18 battery. It suits users needing reliable cutting and grinding performance.
Pros
- Brushless motor for extended runtime and durability
- No-lock paddle switch for easy control
- Electronic clutch protects against kickback
- Anti-vibration side handle reduces fatigue
Cons
- Sold as a bare tool without battery
- Heavier than some compact alternatives at 4.99 pounds
- Limited to 4-1/2 inch wheel diameter
Good fit if
- You already own M18 batteries
- You need a reliable paddle switch
- You want brushless motor efficiency
Skip if
- You need a complete kit with battery
- You prefer a lock-on trigger
- You require a 5-inch wheel capacity
Verdict: Milwaukee M18 Fuel 4-1/2 in. Grinder is ideal for M18 system users who value paddle switch control and kickback protection. It fits pros needing a durable, brushless tool for frequent grinding tasks.
Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder
Best for: Professionals with M18 batteries needing paddle control
- Power Source
- Cordless (18V)
- Wheel Diameter
- 4-1/2 in. / 6 in.
- Motor Type
- Brushless
- Switch Type
- Paddle switch
- Battery Included
- No (Tool-Only)
- Safety Features
- Braking
View on Amazon: Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder Affiliate link
This Milwaukee M18 FUEL grinder uses a brushless motor for efficient cordless power. It features a paddle switch for direct control and braking safety. The tool accepts 4-1/2 inch or 6 inch wheels. It weighs 6.39 pounds and measures 16 inches long. You get the tool only, without a battery. It suits users who need a durable, high-performance grinder for metalwork.
Pros
- Brushless motor for extended runtime and durability
- Paddle switch offers precise, direct control
- Braking safety feature stops the wheel quickly
- Accepts both 4-1/2 inch and 6 inch wheels
Cons
- Sold as tool-only, requiring a separate battery
- Heavier at 6.39 pounds compared to lighter models
- Lacks a side handle for two-handed stability
Good fit if
- You already own M18 batteries
- You prefer paddle switches for better control
- You need a versatile grinder for multiple wheel sizes
Skip if
- You want a complete kit with battery and charger
- You need a lighter tool for overhead work
- You require a side handle for stability
Verdict: Milwaukee M18 FUEL 4-1/2 In. Grinder is a robust choice for professionals who already have M18 batteries and value the control of a paddle switch. It delivers reliable performance for heavy-duty cutting and grinding tasks.
Specifications side by side
| Spec | Milwaukee M18 Brushless Paddle Switch Grinder | Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder |
|---|---|---|
| Power Source | M18 cordless | Cordless (18V) |
| Wheel Diameter | 4-1/2 in / 5 in | 4-1/2 in. / 6 in. |
| Motor Type | Brushless | Brushless |
| Switch Type | No-lock paddle switch | Paddle switch |
| Battery Included | No (tool only) | No (Tool-Only) |
| Safety Features | not stated | Braking |
| Included Tools | Grinder | Grinder |
| Chuck Size | 1/2 Inch | not stated |
| Dimensions | 13 × 8.5 × 3.5 inches | 16 × 7 × 4 inches |
| Weight | 4.99 pounds | 6.39 pounds |
| Size | Large | not stated |
| Color | Chrome | Black/Red |
| Model | 2880-20 | 3670-20 |
Frequently asked questions
Which grinder is lighter and easier to handle?
The Milwaukee M18 Brushless Paddle Switch Grinder (2880-20) is lighter. It weighs 4.99 pounds compared to the 6.39 pounds of the M18 FUEL model. This reduced weight helps reduce fatigue during long grinding sessions. The compact design also makes it easier to maneuver in tight spaces.
What is the main difference in wheel capacity?
The primary difference is the maximum wheel diameter. The M18 Brushless model supports 4-1/2-inch and 5-inch wheels. The M18 FUEL model handles 4-1/2-inch and 6-inch wheels. This allows the FUEL version to use larger discs for more aggressive material removal.
Do both tools use a paddle switch?
Yes, both grinders feature a paddle switch. This design allows you to control the tool with your index finger while maintaining a secure grip. It offers precise control and immediate shutdown capability. This safety feature is standard on both the 2880-20 and 3670-20 models.
Which model is more compact in length?
The M18 Brushless Paddle Switch Grinder is shorter. It measures 13 inches in length. The M18 FUEL 4-1/2 - 6 in. Braking Grinder is longer at 16 inches. The shorter body of the first model provides better balance and access in confined areas.
Are both tools cordless and battery powered?
Both are cordless tools powered by M18 batteries. They are sold as bare tools, meaning batteries are not included. You can use any compatible M18 battery pack with either grinder. This allows you to leverage your existing Milwaukee battery ecosystem for power.
Does the FUEL model have braking?
The Milwaukee M18 FUEL 4-1/2 - 6 in. Braking Grinder includes a braking feature. This stops the wheel quickly after you release the switch. The standard M18 Brushless model does not list this feature in its specifications. Braking can improve safety and efficiency.
Which grinder is better for heavy-duty tasks?
The M18 FUEL model is built for heavy-duty work. It supports larger 6-inch wheels and includes a braking system. The heavier build at 6.39 pounds suggests a more robust internal construction. It is ideal for professionals needing durable performance for frequent cutting and grinding.