Harbor Freight Tools


Pneumatic 1/4 in. Air Die Grinder

Air Die Grinder's compact design and one-hand operation let you work even in tight spaces

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Use this pneumatic die grinder for grinding and general shaping of metal, plastic and wood, as well as cylinder-head porting and engraving. Die grinder's exhaust is in the rear, so it won't deflect dangerous metal chips at the operator. Requires only 4.5 CFM @ 90 PSI to deliver 22,000 RPM (max.). Safety on throttle.

  • Compact design and one-hand operation for maneuverability in tight spaces
  • Lightweight die cast aluminum housing
  • Paddle trigger with safety
  • Rear exhaust

92144, 36572
Collet size (in.)
1/4 in.
Exhaust location
Recommended hose size (in.)
3/8 in.
Accessories Included
2 collet wrenches, 1 quick connector
Air inlet size
1/4 in.- 18 NPT
Average air consumption
4.5 CFM @ 90 PSI
Speed (max)
22,000 RPM
Product Height
2-5/8 in.
Product Length
6-5/8 in.
Product Weight
1.40 lb.
Product Width
1-9/16 in.
Shipping Weight
1.55 lb.
1/4 in.
Working pressure (psi)
90 PSI
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.