
Ingersoll Rand 308B
Score: 78/100
DEWALT DWE4887 1-1-inch
Score: 78/100Rankings

The Ingersoll Rand 308B is a lightweight, straight air die grinder designed for precision tasks, featuring a 0.33 HP motor that delivers 25,000 RPM. Its high noise level and significant air consumption are the main drawbacks. It is best suited for professional welders and fabricators needing precision in confined areas where right-angle tools cannot reach.

The DeWalt DWE4887 is a corded die grinder with a 4.2 amp motor delivering 25,000 RPM, designed for professional welders and fabricators. Its key advantage is AC/DC compatibility for field use, though the 8-foot cord limits mobility. It is best suited for industrial users needing high-speed grinding in welding shops or fabrication environments.
| Attribute | ![]() | ![]() |
|---|---|---|
25,000 RPMbest | 25,000 RPMbest | |
| ↓ lower better | 28 CFMbest | — |
| ↓ lower better | 103 dBbest | — |
| ↓ lower better | 0.46 kgbest | 1.63 kg |
174 mm | 487.68 mmbest | |
246 W | 450 Wbest | |
100 mm | 106.93 mmbest | |
202 mmbest | 94.99 mm |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
General(1) | ||
Warranty | 1 Year | 3 Year Limited |
Compatibility & Controls(3) | ||
Collet Size | 1/4 inch, 6 mm | 1/4" |
Switch Type | Safety Lock Lever | Paddle with lock-on |
Tool Type | Straight | Die Grinder |
Performance(1) | ||
Motor Power (W) | 246 W | 450 W |
Dimensions(3) | ||
Overall Length (mm) | 174 mm | 487.68 mm |
Overall Width (mm) | 100 mm | 106.93 mm |
Overall Height (mm) | 202 mm | 94.99 mm |
Power & Air(2) | ||
Power Source | Pneumatic | Corded |
Exhaust Type | Rear | Angled |
Ergonomics & Build(2) | ||
Weight (kg) | 0.46 kg | 1.63 kg |
Handle Type | Straight | In-line |

Products in the top-left offer the best value (high score, low price).

Professional sources praise the 308B for its powerful 0.33 HP motor and 25,000 RPM speed housed in a compact 6.85-inch body, calling it ideal for industrial-duty tasks with superior ergonomics and long-lasting construction.
Search results lack extensive user reviews, but available notes emphasize praise for its lightweight feel, maneuverability, and consistent power in everyday shop use like de-burring and polishing.




No direct quotes from professional reviewers or editors appear in the search results; descriptions from manufacturer and retailer sites emphasize the tool's high power, AC/DC versatility, and user-friendly paddle switch for tough grinding jobs.
Search results contain no consumer reviews, ratings details, or recurring praise/complaints; only product specs and features are detailed across sources.