Tumbling Media – Types and Choices

There are several reasons that tumbling media is manufactured in special shapes and sizes. The shape is manufactured to be able to reach all areas of the part and provide more media-to-part contact. The more contact, the faster the result. An example would be a steel stamping and using triangular media to contact all areas of the part.

media compilation

The general rules of thumb are: flat media is used for flat parts; round media, round parts. After this, it comes down to parts-media separation and media lodging issues. The idea is to pick a shape of media that will reach to the areas on the parts that are of concern, and then pick a size which will be separated easily from the parts and also not lodge into any holes or slots.

Random Shapes: The random shape media offers you a very fine, solid crystalline structure, which adds in cutting, wear and impact resistance. Its weight increases cutting action along with providing burnishing capabilities similar to steel media. Its shape lends itself to fine finishes.

Ceramic: Ceramic media is recommended for general purpose polishing, light and heavy deburring, fast and extra fast deburring and ultra-aggressive metal removal. Ceramic media is best for heavy cutting and hard metals. When a small media is required (under 3/4″), ceramics offer the best selection. Ceramic media supports very heavy parts better than plastic media. The polishing and deburring media you choose has a direct bearing on the quality of work, time cycles, operating procedures and ultimately, your bottom line. The Ceramic Duramedia line enables you to match media composition, density, shape and size to your mass finishing requirements.

Plastic: Recommended for general metal removal, pre-painted or pre-plated finishing, polishing, fast and heavy cutting. Plastic media is used for soft metals (brass and aluminum) or stringy materials to avoid rolling the burr over into a hole. It will produce a very smooth finish but very little shine. For general metal removal, prepaint or preplate surface finishing and polishing, fast and heavy cutting. Plastic medias come in a wide variety of compositions and shapes. Use it for general metal removal, prepaint or preplate finishing polishing or fast and heavy cutting.

Steel: Steel Media has long been recognized for its burnishing capabilities when used with the proper compound. Its lack of wear makes it attractive because it reduces lodging along with reducing wastewater treatment.

XM Media: A “Coloring” abrasive. It is a sintered ceramic tumbling nugget with exceptional properties. Its hardness, toughness and extremely fine crystalline structure make it one of the best products available for developing a lustrous, high-color burnish on all types of ferrous metals, brass and aluminum.

Angle Cut Cylinders: An extremely hard abrasive-free media used for burnishing, polishing, light deburring and driving loose abrasives. It is a proven media choice for use in chemically accelerated processes where a lower density media is required.

angle cut

Cones: An extremely hard abrasive-free media used for burnishing, polishing, light deburring and driving loose abrasives. It is a proven media choice for use in chemically accelerated processes where a lower density media is required

cones

Angle Cut Stars and Triangles: A versatile, general purpose, mildly abrasive media. This product combines low media wear rate with reasonable metal removal rate. It produces a fine finish and can be used for burnishing with proper compounding.

angle cut stars Triangles

Cyl-cuts: Although similar in performance to ECH, this media provides a much smoother surface finish by utilizing a finer grain aluminum oxide. The increased concentration of finer abrasive particles still allows for fast metal removal with medium wear.

 

Pyramids | Tetrahedrons | Wedges: Contains a coarser-grained aluminum oxide abrasive; and its rate of metal cut compared to media wear makes it a very efficient media. Its cut and finish characteristics have been the industry standard for years.

pyramids wedges

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