GEM microfinisher lishing

Microfinishing Polishing Superfinishing

GEM Microfinishing  Frequently Asked Questions

Many different terms are used for Microfinishing.  Polishing, Superfinishing, finishing and mirror finishing, also sanding or just finishing.

1)           What is Microfinishing?

Microfinishing is a finishing process that will reach any surface finish requirements. Microfinishing productively and cost efficiently achieves any Ra, Rz, Rmax, Bearing Ratio Area and other surface finish parameters that might be specified.  Microfinishing is the most consistent method of obtaining these surface finishes.

2)           How does Microfinishing work?

The Microfinishing process utilizes a precision-coated abrasive called Microfinishing Film.  Microfinishing Films are available from 0.05 micron to 180-micron mineral size. (Note:  That’s 60 mesh up to 10,000 mesh) The micro abrasives are applied to the workpiece in a constantly indexing fashion.  The abrasive is moving very slowly (approx 1” (25mm) per minute) therefore  all areas of a large roll are always in contact with new fresh abrasive. The micron grade of abrasive used determines the surface finish.

3)           What materials can be Micro finished?

Microfinishing can finish any material: from soft rubber and urethane to HVOF hard tungsten carbide. Stainless steel, copper, chrome plating, ceramic coating and cast iron

4)           What types of parts or rolls can be Microfinished?

Virtually any size part can be Microfinished. Companies are finishing fuel injector parts, transmission components, shock absorber rods, valve stems and many other small components. Paper mills are Microfinishing rolls that can be up to 5-meter diameter and 14 meter long. Very large Copper foil drums and Yankee dryer drums are also finished using this process.

5)           Can I afford to implement Microfinishing into my production process?

If a very consistent surface finish is required on your parts, this process is the most economical method. It is productive, cost efficient and easy to operate. Maintenance on machinery is very low, even in operations that are running 24 / 7.

6)           What types of Microfinishing machinery are available?

Any company can incorporate Microfinishing into their operation. Attachments can be mounted on any lathe or cylindrical grinder. These attachments are available from a 2” abrasive width up to 24” abrasive width. Many styles of production machines are also available, including thru feed and plunge Centerless, center driven, and turnkey roll finishing and custom machines built to a customer’s specification.

7)           Is this Microfinishing a new technology that is still in the experimental stage?

Microfinishing has been used for over 30 years. The automotive industry has been using this process to Microfinish camshafts and crankshafts for many years. Steel mills and paper mills have be Microfinishing rolls for over 20 years.


For more information contact to Bexxon Global 

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About GEM

GEM is the leading provider of Microfinishing solutions. We take pride in offering the best service. We are dedicated to serving the needs of our customers each and every day. 

We had the first patent on the Microfinishing process and machine.  The company was started in the 1980's and have grown since then.

GEM is a proven leader in roll grinder retrofit equipment.  Hundreds of successful installations prove that the simplicity of the GEM design works.  GEM Systems can generate specific finishes very quickly with a minimum of operator training.

You can select from our standard machines to a special retro-fit design to fit your needs.

Microfinishing Superfinishing GEM

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