US
1/4

Angle Air Die Grinder Kit with Sanding Discs 1/4 Inch

  • Wattage: 800 watts
  • Maximum Rotational Speed: 20000 rpm
  • Power Source: Pneumatic
  • Material Type: Aluminum

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

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ASIN: B0918CSK8NModel: 315-22Category: Power Grinders

Overview

This 315-22 is an air-powered die grinder that spins up to 20,000 RPM, draws on an 800 watt motor, and weighs about 0.88 kilograms. The 1/4 in its listing title points to a quarter-inch collet size rather than a separate brand name.

The listing also carries a 115 volt figure, which is unusual for a pneumatic tool since air grinders run on compressed air rather than mains power, so that spec may refer to the compressor circuit rather than the grinder itself. Treat it as one detail to confirm before buying.

  • Air powered die grinder
  • 20,000 RPM speed
  • 800 watt motor power
  • 0.88 kilogram weight

Who it's for

Suits users needing a compact air die grinder for deburring, polishing or grinding in tight spots, provided they already run a compressed air line. Not for anyone without an air compressor, since this tool is air powered rather than corded or battery driven.

Pros and cons

Pros
  • Compact at about 0.88 kilograms for one-handed use
  • 20,000 RPM for fast material removal
Cons
  • Requires a compressed air line to operate
  • 115 volt spec is unclear for an air tool

Performance notes

Running on compressed air rather than a battery or cord, output stays consistent as long as air supply pressure holds, and the 20,000 RPM speed with an 800 watt motor rating suits fast material removal on small work. At 0.88 kilograms it stays light enough for one-handed use over longer sessions.

Specifications

Brand1/4
Model315-22
Dimensions & fit
Item Weight1.94 poundslower than 64% of 107 power grinders
Wheel Diameter2 inches
Capacity & performance
Maximum Rotational Speed20000 rpmhigher than 70% of 122 power grinders
Power & efficiency
Wattage800 watts
Power SourcePneumatic
Voltage115 volts
Horsepower0.001 hp
Construction & materials
Material TypeAluminum
ColorPolished Color
Included components
Unit Count22
Other details
Style NameAngled

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Frequently asked questions

Does the 315-22 grinder need an air compressor?

Yes, it is listed as air powered rather than corded or battery.

How fast does the 315-22 grinder spin?

Up to 20,000 RPM, per the listing.

How much does the 315-22 grinder weigh?

About 0.88 kilograms.