Tag Archives: grinding wheels

United Abrasives Keeps Expanding it’s Product Lines

New Offerings from United Abrasives Now Available at Tanner

United Abrasives is known worldwide for their consistent, high quality products and exceptional levels of service. Being one of the largest and leading manufacturers of abrasives in the world, United Abrasives is always looking to expand their product offerings. Each year United Abrasives puts out new and improved products to help make their customers jobs go easier and help them produce a better overall finished piece when using United Abrasives products.

Tanner is happy to introduce a few of the latest offering from United Abrasives. Three of the latest product lines from UA are: Sait GF – Grind & Finish Interleaf Flap Discs, The Ultimate Pipeline™ Specialty Pipeline Cutting & Grinding Wheels & The Ultimate Grind™ Grinding Wheels. All of the following products can now be purchased from our website – TannerBolt.com.SAIT GF Interleaf Flap Disc

Sait GF – Grind & Finish Interleaf Flap Discs

Grind & Finish with One Product

  • Combines coated & non-woven abrasives which allows you to “Grind & Finish” with one product reducing time and labor
  • Allows you to grind down weld seams and provide a flawless finish in one single operation
  • Cushioned grinding effect allows for effortless blending and finishing of contoured work pieces
  • Ideal for cleaning weld spatter and light deburring operations
  • Operate at lower speeds for optimum performance


  • Metal – Ferrous and/or non-ferrous metals
  • Stainless – Stainless steel, high tensile steel, titanium

Shop Now for Sait GF – Grind & Finish Interleaf Flap Discs

The Ultimate Pipeline™ Specialty Pipeline Cutting & Grinding WheelsUltimate Pipeline

High Performance Cutting, Notching & Light Grinding

  • Proprietary grain and bond system
  • Fast, free-cutting with exceptional life
  • Premium performance cutting and light grinding for the toughest applications
  • Offered with the 5/8″-11 Supper-Lock Hub™ for easy changing and exclusive fail-safe two part locking system for superior safety
  • Made in the USA


  • Metal – Ferrous metals (iron, steel, welds)
  • Stainless – Stainless steel, high tensile alloys

Shop Now for The Ultimate Pipeline™ Specialty Pipeline Cutting & Grinding Wheels

The Ultimate Grind™ Grinding WheelsUltimate Grind

Exceptionally Long Life with High Metal Removal Rates

  • Proprietary grain and bond system
  • High performance grinding for the toughest applications
  • Offered with the 5/8″-11 Supper-Lock Hub™ for easy changing and exclusive fail-safe two part locking system for superior safety
  • Made in the USA


  • Metal – Ferrous metals (iron, steel, welds)
  • Stainless – Stainless steel, high tensile alloys

Shop Now for The Ultimate Grind™ Grinding Wheels

Tanner Carries All the Abrasives You Need

Tanner carries the full line of United Abrasives bonded abrasives: grinding wheels, cutting wheels, cup wheels, cones, plugs and a host of similar bonded products. We also carry a wide variety of United Abrasives sanding sheets, belts, rolls, flap discs, fiber discs and PSA discs. Along with United Abrasives broad line of wire brushes, non-woven abrasives, and a full line of accessories. Shop now at TannerBolt.com for all your abrasive needs.

Abrasives FAQs

In the same way that not all fasteners are the same (self-drilling, nuts and bolts, security fasteners, etc.), not all grinding wheels are the same. All the differences raise any number of questions about our grinding wheels.

What factors should be considered when choosing a grinding wheel?

Before selecting a grinding wheel, you should know exactly what task you want to accomplish with it. Wheels vary in the following ways:

  • diameter
  • type of abrasive
  • optimal speeds
  • grit
  • wheel thickness
  • shape
  • grinding area
  • material

What are the different grinding wheel configurations?

Grinding wheels are categorized according to shape and purpose. These categories are called types and labeled with a number. Occasionally types are subcategorized, and the number is followed by a letter (Type 27A, for example). There are numerous wheel configurations, but the four most common are Type 1, Type 27, Type 28, and Type 29.

What are the applications for some of the different wheel shapes?

Type 1 is called a straight wheel because from the edges through the center, the wheel is a straight line. This is the type of wheel most people envision when they think of grinding wheels. Straight wheels differ from other types in that their grinding surface is the outside edge of the wheel. Because of the shape of the grinding surface, straight wheels may be used on cylindrical surfaces with a concave shape. Typically attached to a bench, they are also used to sharpen other tools. 

Type 27 is a depressed center wheel. As the name implies, the center of the wheel is lower than the rest of the surface of the wheel. This creates a larger grinding surface because the flat area of the wheel can be used without interference from the center connection. Type 27 is great for grinding flat surfaces or cleaning edges. 

Type 28 is a saucer-shaped wheel. It looks similar to the depressed center wheel except for the surface of the wheel is angled rather than flat. The angles make for easier visibility because the entire surface of the wheel is not being used at one time. Saucer wheels are helpful for corner and side grinding as well as de-burring work. 

Type 29 is a flexible wheel. As the name indicates, it is more flexible than the other wheels discussed so far. The flexible nature of this type of wheel reduces vibrations the user experiences, which, in turn, reduces user fatigue over long stretches of time. Flexibility also provides a closer fit for smoothing and grinding contoured surfaces.

Where is the best place to store a grinding wheel?

While most tools are typically stored in a garage, workshop or truck bed toolbox, it is best to store grinding wheels somewhere with a bit more climate control. Like paint, the bond that holds the abrasive to the wheels can become comprised at extreme temperatures or humidity levels. If the abrasive does not adhere to the wheel, the grinding function will be poor. Store your grinding wheels in a dry location with a fairly constant temperature.

Finding the Right Grinding Wheel

A24R Pipeline Industry

Grinding wheels are much like sandpaper. Depending on the task, there are many different types of grinding wheels, and each is suited for a particular task or tool. Grinding and cut off wheels from manufacturers like United Abrasives grinding wheels are designed for use in construction and metal trades. Surface grinding wheels are made from different materials and are more likely to be found on a stationary bench grinder or blade-sharpening tool than on a portable cut off tool. Below is a non-comprehensive list that describes the major categories of abrasive and surface grinding wheels.

Woven, Silicon Carbide Disposable Production Grinding Wheels.

Seen most often on 4 or 5-inch handheld grinding tools, these tough and durable abrasive wheels are the workhorse of the steelworkers and metal fabricators industry. Their woven silicon carbide materials is harder than ferrous steel, and will quickly and efficiently cut through steel, or grind off welding slag to leave a clean joint. Metalworking contractors use these 4 ½, 5 and 6-inch handheld grinding tools in the same way carpenters use their power saws and painters their paintbrushes.

The silicon carbide wheels are inexpensive and are designed as a disposable abrasive. As the wheel cuts or grinds steel, it loses some of its surfaces and abrasive characteristics. When the wheel is too small to be used effectively, the contractor replaces it with a new disk.

Fast Grinding Disks

Fast grinding abrasive disks, including aluminum oxide grinding wheels and zirconium grinding wheels, have a higher abrasive rating than other disks. These tools are designed for quick removal of surface imperfections on steel fabrications. Because of their highly abrasive rating, they are unsuited for applications where a smooth cut edge is desired.

Hard Edge Disks

Hard-edge grinding wheels by United Abrasives are impregnated with ceramic to create an even harder cutting edge. The hard edge disks are less abrasive than the fast grinding disks, but they last much longer. Hard-edge disks are suited for high carbon steels and stainless steel.

Soft Bond Disks

United Abrasive Soft Bond abrasive disks are designed to clear material from a work surface without becoming loaded with metal dust or ferrous debris. Soft bond disks will deteriorate faster than the disks listed above, but they are perfect for softer materials such as copper, brass, bronze, or other soft metals.



Surface Grinding Wheels

Surface grinding wheels are manufactured from composite stone abrasives rather than the fast cutting silicon carbide used in cutting and grinding wheels listed above. These wheels feature a different grain structure than the silicon carbide disk. These disks are manufactured for final preparation of a surface, or sharpening the edge of digging and cutting tools rather than removing metal from welded fabricated steel. Surface grinding wheels are more likely to be found on a stationary bench grinder than on a portable cut off tool.

Surface grinding wheels are also available in different abrasive strengths. Like sandpaper, disks that are more abrasive will remove material quickly, while the finer disks are more suited for finish work, such as putting a finely honed edge on a knife.


To learn more about grinding wheels, check out these other posts:

The DNA of a Grinding Wheel

How to Read a Grinding Wheel Label

Grinding Wheels for the Right Application

Saitech™ Pipeline Industry

United Abrasives is one of the industry-leading  manufacturers of grinding wheels and cut-off disks in North America. With a plant on the eastern seaboard, and warehouses in Ontario, Canada and Utah, USA, United Abrasives grinding wheels set the standard for reliability and durability for the steel and metal working industry. In the same way that a carpenter relies on their circular saw as an essential part of their tool box, metal workers rely in grinding tools and metal cutting saws which cut, grind and shape metals used in construction and commercial building fabrication.

United Abrasives main manufacturing plant is located in North Windham, Conn. This state of the art manufacturing facility is over 400,000 square ft, and has the capacity to supply products to the entire North American market.

Silicon carbide grinding wheels are used throughout the metal working and commercial construction industry. Metal fabrication is both a science and art, and the iron and steel workers together with the plumbers and pipe fitters rely on metal grinding wheels to complete their tasks. While steel used in building construction is manufactured to specific guidelines, the individual pieces of steel often have to be custom ground on the job site, before they fit together perfectly. Additionally, even when the steel members are perfectly shaped, after they are welded together, the metal welds are cleaned up by grinding off any access, so that the joint is ready for the next steps in the construction process.

C24N Concrete

Silicon carbide grinding wheels are also manufactured to different degrees of hardness. Each wheel has a specific purpose, and depending on the application, one grinding wheel works better than another.

  • Soft bond grinding wheels are designed for softer metals. The wheel is designed so that it doesn’t load up with metal as it’s used. Soft materials, like low carbon ferrous metals, will clog a standard grinding wheel and reduce its effectiveness. The Soft Bond wheel prevents the metal from building up on the grinding wheel’s cutting surface.
  • General purpose cutting wheels are the work horse of the industry. Perfect for harder, high-carbon  steels and pipes, general-purpose  wheels balance their cutting ability with material hardness. These wheels are often used for the pipeline industry.
  • Hard edge wheels wear more slowly, and are designed for even harder alloys and ferrous steel. Hard edge wheels are often used for cutting notches in existing metals, or final fitting structural steel on-site for custom welding applications. Metal workers replace hard edge grinding wheels much less frequently because of their improved durability.

Additionally, other specialty wheels are designed for concrete, and stainless steel work.  Concrete is soft, and cuts quickly, so depending on the tool, concrete cutting blades are often made of stainless steel with diamond cutting edges. Concrete grinding wheels are designed to quickly clear the material without loading up with debris.

Stainless steel cutting wheels are some of the most expensive grinding wheels. Stainless steel’s extreme hardness demands that the grinding wheels be even harder. These grinding wheels are often used as a final surface preparation, or to remove burrs from cut lengths so the stainless steel can be fabricated smoothly.


More about grinding wheels:

How to Read a Grinding Wheel Label

The DNA of a Grinding Wheel

The DNA of a Grinding Wheel

A grinding wheel is a resin bonded abrasive composed of abrasive grains which are held tightly together by a bonding agent and reinforced with a woven material. The main function of a grinding wheel is to remove material from a workpiece in an abrasive action with each grain acting as a cutting tool.

Abrasive grains are particles of man-made abrasive compounds. Most manufacturers use recycled grains, United Abrasives uses high quality virgin grains that are made to exacting specifications. The chemical structure of the grains determines the shape, sharpness, hardness and friability of the abrasive. Typical grains are:

Aluminum Oxide

  • A tough grain used for cutting metals and without excessive fracturing

Silicon Carbide

  • A hard and sharp abrasive used on concrete


  • A fine, dense crystalline grain that is used for rugged stock removal

Ceramic Aluminum Oxide

  • Two times tougher than standard aluminum oxide

The resinoid bonding agent that holds the grains together determines the
resistance of the wheel.

United Abrasives uses multiple layers of long stranded fiberglass as the woven material to form a strong reinforcement layer that allows the wheel to be used at maximum RPM and withstand lateral pressure applied during use.

These three components are measured and combined and then pressed using an automated process during manufacture to form a grinding wheel.

United Abrasives’ labels are incorporated into the process and remain intact throughout the life of the wheel. For a quick overview on labeling, check out our post on How to Read a Grinding Wheel Label.