Double Disc Grinder Process Description

What does it do? How can I use it? Why will it help me?

A double disc grinder grinds two sides of a workpiece at the same time. This provides a high degree of flatness and parallelism.

For parts like piston rings that need to be ground flat on facing sides, a double disc grinder will cut production time in half. There is no need to grind the same part twice; this also reduces stress on the part.

Double disc grinders are a fine grinding process and can achieve extremely close tolerances, often similar to what lapping can achieve.

For answers to your questions or more information on double disc grinders call Liberty at
847-276-2761 or send us an email

Liberty Machinery buys and sells all kinds of double disc grinders.

We are your #1 source for a high quality double disc grinder.

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Process Description: How does it work?

All double disc grinders have two grinding surfaces facing each other, with the workpiece sandwiched in between. The difference lies in how the grinding wheels are oriented and the way in which the parts travel through them.

The machine will be classified as a horizontal double disc grinder if the wheels are parallel to the floor, and a vertical double disc grinder if perpendicular. The size and length of the parts to be worked will determine which is best for your operation.

There are four possible types of feed system.

A rotary fixture or carousel fixture type has a flat circle with holes into which the workpieces are placed, as pictured above. This whole plate spins, passing each of the pieces between the grinding wheels.

A feed through fixture type uses a power feed to pass the workpieces straight through and out of the grinding area.

A reciprocating fixture type is used for heavy stock removal or extremely close tolerance requirements. The workpiece is held by a paddle-type fixture that moves back and forth, passing and re-passing the same piece through the grinding area.

Finally, special fixture types are custom-built for workholding that cannot be accommodated by the normal types.

Common Applications:
  • Rotor finishing
  • Connecting rods
  • Hydraulic pump components
  • Nontraditional components (glass, plastic, graphite, ceramic)
Common Industries:
  • Primary Automotive
  • Secondary Automotive
  • Bearing
  • Compressor
  • Off-road Equipment
  • Job Shops
  • Computer
  • Aerospace

Major Extrude Hone/Abrasive Flow Machine Manufacturers

Bendix, Besly, Gardner, Giustina

Sell Your Double Disc Grinder

Liberty is always looking for used double disc grinders to buy for inventory. Contact us and let us know what you have for sale. We’ll be happy to give you a free quote.

Check our Inventory for a Used Double Disc Grinder

Click below to see our current inventory and request a free quote. Someone will be in touch very soon.

See our used horizontal double disc grinders for sale.

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See our used double disc fine grinders for sale.

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  1. ThomasNet.
  2. Michael Paquin, “Double-disc Grinding on the Move,” Modern Machine Shop (December 1995).
  3. Gardner Disc Grinders & Abrasives, Inc., “Gardner G Series Double Disc Grinders” (brochure). 1994.