Silicon Carbide Sanding Belts

Silicon carbide abrasives are hard, sharp abrasives that work effectively on metal, stone and wood finishes. Popular use cases include coarse grade stock removal and rough sanding operations.

POWERTEC’s premium black silicon carbide sanding belts feature a closed coat for optimal grain coverage, making them an excellent choice for use on harder materials. Microfractures occur with repeated use (friability), yet don’t degrade as quickly as aluminum oxide abrasives do.


A sanding belt’s grain size plays an integral part in cutting and shaping workpieces. Smaller grains make sanding faster while larger ones take more effort to grind; larger ones tend to leave rougher finishes than their counterparts; hardness and durability of grains vary based on material quality – high-grade aluminum oxide materials tend to outshone cheaper varieties like corundum.

Silicon Carbide (SiC) is a crystalline compound with the chemical formula SiC and features as a colorless, hard, brittle material known as carborundum or corundum. As a semiconductor with n-type conductivity that can be doped with elements like Boron, Gallium or Nitrogen to increase metallic conductivity; SiC is widely used for insulation to decrease electrical resistance while increasing power transmission speed.

Silicon carbide’s sharp, friable nature makes it the ideal material for sanding objects that are sensitive to pressure or heat, or that require consistent scratch patterns. Furthermore, heat and vibration may damage other abrasives used in applications. As such, this material has become popularly chosen for wood, floor, paint, metal, glass and fiberglass sanding projects.

SiC abrasives are typically resin-bonded to a sturdy backing for maximum longevity of use and to protect workpieces from the damaging effects of friction, heat and vibration. The abrasive is often embedded at the center of its resin-on-resin backing which keeps it in place as the belt rotates.

Rio Super abrasive belts are constructed of graded SiC grit resin-bonded to a sturdy backing for optimal results. Available in various grit sizes and grit specifications for all your sanding needs – these belts make an excellent choice for lapidary, metalworking and woodworking work, plus can even be used with portable sanders, benchstand grinders or backstand belt sanders for optimal use.

SiC sanding belts measuring 3″x25-3/32″ feature an abrasive that has been securely adhered to heavy duty waterproof cloth backing with butt splice joint, enabling for bump-free operation. They fit most American Sanders EZ-8 drum sander expandable drum floor sanding machines as well as Clarke EZ-8 expandable drum floor sanders found at local rental stores.


Silicon carbide abrasives are sharp, effective tools for grinding hard materials like stone, metal, glass and wood, while also cutting soft surfaces such as rubber, plastic and paint smoothly. Their sharp edge makes them popular choices in automotive sanding and finishing tasks where a smooth surface finish is often desired. Furthermore, unlike aluminum oxide abrasives which tend to heat and pressure quickly deteriorate over time, silicon carbide resists both. Silicon carbide’s tolerance to heat and pressure makes it the ideal choice when sanding sensitive objects like rust, paint urethane or between coatings on metals such as bronze copper titanium and aluminium.

Silicon Carbide sanding belts come in various grit sizes to meet every application. Ranging from coarse 220 grit sanding belts for stock removal to 2000 grit AO belts with fine finishes, these industrial quality sanding belts can withstand heavy-duty use while offering even, consistent scratch patterns for an even finish.

These heavy-duty polyester cloth backed sanding belts feature an extra strong and long-term polyester backing, perfect for bench top and backstand belt sanders such as the 4″x24″. They can even withstand up to 200 kg.

Abrasive grain grit determines both how quickly and smoothly a project will be completed. Most sanding belts display both their grain size and type (A or C). If you are uncertain which product to select for your application, consult its product description to compare different grains to find an abrasive that best meets your requirements.

On the back of a sanding belt or disc you will also find information regarding its grain type of abrasives; each code indicates what kind of material has been used; for instance A is aluminum oxide-based while others may feature special codes, such as waterproof.

Consider brown and white aluminum oxide, green silicone carbide and zirconia alumina as potential abrasives to use when grinding hard non-ferrous metals, ceramics and hard non-metals as well as for sanding and polishing applications. Brown aluminum oxide lasts longer due to its tougher, brittle grain that resists fraying easily.


Our premium silicon carbide sanding belts feature an amalgam of hard, sharp abrasives that is adhered to a tough polyester backing for maximum wear-resistance and long life span. When worn down, new layers are revealed, so the belt does not degrade prematurely and continues to provide consistent cutting action for extended use on metal, stone and wood surfaces. These premium silicon carbide sanding belts make an excellent addition to any workshop environment!

Silicon carbide abrasive grains make these sanding belts one of the hardest and sharpest available, which makes them great for applications requiring high precision with minimum dust generation. Furthermore, their light touch makes these ideal for painting prep work, between-coat sanding, knife scale finishing, lapidary work or other similar uses that demand uniform scratch patterns.

Though these sanding belts are highly durable, they must be used with relatively low pressure. Too much force could crush the abrasive grains and reduce its lifespan significantly. Therefore, pressing with enough force to remove material should not increase heat build-up too rapidly – or otherwise risk burning yourself or damaging resin bonding on its backing of an abrasive belt backing.

These sanding belts come in various grit sizes from 36 through 800. Suitable for wet or dry sanding applications, these abrasive belts work effectively on materials like stone, concrete and nonferrous metal castings such as brass and bronze castings.

These 6″x48″ industrial grade sanding belts feature heavy duty water proof cloth backing with butt-spliced edges for wet or dry sanding applications, making them suitable for most types of woodworking equipment and suitable for cast iron, stone, concrete, nonferrous metals such as glass or ceramic materials. Ideal for cast iron sanding as well as cast iron stone concrete non ferrous metal glass ceramic materials they will fit most American Sanders EZ-8 expandable drum floor sanders as well as most rental store Clarke EZ-8 floor sanders found here


Aluminum Oxide, Zirconia Alumina, Silicon Carbide and Ceramic are the four main abrasive grain materials utilized by belt sanders. Each type has its own set of advantages and drawbacks; Aluminum oxide for instance can be an economical choice that works well on wood and metal alike, although high grit performance might suffer slightly; Zirconia alumina on the other hand is extremely expensive but highly durable, perfect for both wood and metal grit applications; while silicon carbide provides fast cutting speeds while not as long lasting durability than other grains do – perfect for applications which don’t require heat sensitive applications like wood and metal as well.

Industrial grade silicon carbide sanding belts are popular with both professional and amateur sanders alike, especially for use on higher grit applications that require increased pressure. Common uses include concrete prep work, floor coating removal (like glue, urethane and epoxy removal) and paint removal; they also leave an excellent finish on metal and stone surfaces.

Cloth backing is one of the most versatile and widely used types of sanding belt backing options, commonly found in several weight options – typically J or F weight for light flexibility or rigidity respectively.

Sanding belts are intended to be used on stationary Belt Grinders, typically bench or pedestal mounted machines with their own stands. One or multiple operators can operate them, and they’re used in niche fabrication shops, large manufacturing facilities and various applications.

Selecting the ideal sanding belt is a crucial decision for anyone using a sanding machine. Many factors should be taken into account, including grit size, grain type and backing material – once these aspects have been established it becomes much simpler to select one which best meets your needs and gives optimal results for your project.

No matter if you need high-grade abrasives or something different altogether, selecting the appropriate sanding belt can save both time and money. Selecting one shouldn’t be daunting either – simply follow these guidelines to help select one for your project and ensure its successful completion.

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