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Grizzly G0921 End Mill Sharpener

Keep money in your wallet by sharpening your own end mills!

This G0921 End Mill Sharpener won’t take up much room in your shop, but will deliver big results. This portable machine will grind 2-flute, 3-flute, 4-flute and 6-flute end mills, allowing you to get the most out of your tooling. No need to grow your scrap pile or send the end mills to a commercial shop for sharpening any longer.

Thanks to the simple operational design, it takes zero experience to produce amazing results. The G0921 features two grinding wheels, one for carbide bits and one for HSS bits, to help you resurface face angles from 0° to 3°.

This End Mill Sharpener comes with six ER-20 collets ranging in size from 3/16" to 9/16". All of these are contained on the collet rack within the built-in storage compartment.

Like all Grizzly machines, the G0921 comes with a 1-year warranty which covers parts and assures the unit is free from factory defects. (Consumables are not covered by the warranty.)

The G0921 spec sheet was written by our U.S. based Technical Documentation Department and is packed with useful information.

The Grizzly Technical Support team is U.S. based. Parts and accessories are available online and shipped from the Grizzly parts warehouse in Springfield, MO. Made in an ISO 9001 factory


  • Motor: 1/8 HP, 110V, single-phase, 15A
  • The six ER-20 collets include: 3/16", 1/4", 5/15", 3/8", 1/2", & 9/16"
  • The grinding wheel bore size is 1/2",
  • The grinding wheel maximum diameter is 3".
  • The grinding wheel maximum width is 3/8".
  • The SD230 grinding wheel is 230 grit.
  • The CBM grinding wheel is 230 grit.
  • The maximum grinding wheel speed is 4400RPM.
  • Allows end mill bit diameters from 5/32" to 9/16".
  • The minimum end mill bit length is 1-3/4".
  • Grinds at adjustable angles from 0° to 3°.
  • Grinds 2-flute, 3-flute, 4-flute and 6-flute end mills.
  • Footprint: 12" x 6-12"
  • Approximate shipping weight: 32 lbs.

  • SD230 Grinding Wheel (for Carbide Bits)
  • CBN Grinding Wheel (for HSS Bits)
  • Two ER-20 Chucks (4-sided & 6-sided)
  • Six ER-20 Collets (3/16", 1/4", 5/16", 3/8", 1/2", 9/16")
  • Storage Compartment with Collet Rack
  • Sharpens 2-flute, 3-flute, 4-flute and 6-flute end mills
  • Includes 3, 4, 5 & 6mm hex wrenches
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