Ingersoll Rand 307B 1/4 inch Air Die Grinder - 28,000 RPM, 0.25 HP

Powerful, compact performance for metalworking projects

The Ingersoll Rand 307B 1/4 inch Air Die Grinder combines a compact, low-fatigue design with a high-output vane motor delivering 0.25 hp at 28,000 rpm. This gives you reliable material removal for grinding, deburring, porting, and polishing with confidence and control.

With ball-bearing construction and a sturdy aluminum housing, the tool balances well and minimizes vibration, helping you maintain precision during longer sessions. A built-in lubricating wick extends gear life, supporting durability in demanding environments.

Smart design for real-world use

The 307B is lightweight and slim enough to reach tight spaces without sacrificing power. It ships with two wrenches and both 1/4 inch and 6 mm collets, giving you flexible attachment options for a wide range of tasks.

• 0.25 hp at 28,000 rpm maximizes material removal
• Ball-bearing construction reduces vibration for smoother operation
• Aluminum housing offers durability in tough environments
• Includes 2 wrenches and 1/4 inch and 6 mm collets
• Front exhaust helps keep your workspace clean

Versatility you can rely on

Whether you’re a professional mechanic, a metalworker, or a DIY enthusiast, this grinder supports your workflow from initial shaping to final finishing. Use it for porting, weld grinding, deburring, or polishing—wherever precision and a clean workspace matter.

Why choose Ingersoll Rand

Ingersoll Rand has a long history of engineering excellence, delivering durable, reliable tools built to endure challenging environments. The 307B carries that legacy, offering robust performance with everyday practicality.

• 0.25 hp at 28,000 rpm for fast material removal
• Ball-bearing construction reduces vibration
• Aluminum housing resists impact and heat
• Includes 2 wrenches and 1/4" and 6 mm collets
• Front exhaust keeps the workspace clear
• Lubricating wick helps extend gear life