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Standard Abrasives™ A/O Unitized Wheel 890389, 911 4 in x 1/8 in x 1/4 in, 10 per inner 100 per case

Part Number 8903893M ID 66000032905UPC 00051115356902
  • Extra hard density wheel with medium and coarse mineral results in aggressive edge deburring and finishing
  • Harder material density and increased edge durability over 800 Series Unitized Wheels increases life for heavy-duty tasks and hard metals
  • Aluminum oxide mineral is a good match for ferrous and non-ferrous metals, including aluminum
  • Runs clockwise and counterclockwise, allowing greater versatility when paired with tools and machines
 More...
Specifications
Attribute Name
Value
Attachment Type
Center Hole
Brand
Standard Abrasives™
Center Hole Diameter
0.25 in
Center Hole Diameter (Metric)
6.35 mm
Density Rating
Extra Hard
Diameter
4 in
Diameter (Metric)
101.6 mm
Form Type
Unitized
Grade
Coarse
Mineral Type
Aluminum Oxide
Product Form
Wheel
Width
0.12 in
Width (Metric)
3.048 mm
Product Details
  • Extra hard density wheel with medium and coarse mineral results in aggressive edge deburring and finishing
  • Harder material density and increased edge durability over 800 Series Unitized Wheels increases life for heavy-duty tasks and hard metals
  • Aluminum oxide mineral is a good match for ferrous and non-ferrous metals, including aluminum
  • Runs clockwise and counterclockwise, allowing greater versatility when paired with tools and machines
  • Center hole wheel comes in a range of diameters from 1-6˝ and attaches to tools with a unitized wheel mandrel (sold separately)

Our extra hard Standard Abrasives™ Aluminum Oxide 900 Series Unitized Wheel is the most dense and aggressive wheel in our Standard Abrasives™ Unitized Wheels line. This non-woven abrasive wheel is engineered with the highest level of toughness and edge durability for effective removal of challenging burrs and efficient polishing of harder metals.

Hard Density Abrasive Wheel Removes Challenging Burrs with Precision and Imparts a Fine Polish
Our Standard Abrasives™ Aluminum Oxide 900 Series Unitized Wheel is offered in two grades of aluminum oxide (A/O) mineral: coarse or medium. The hardness of this wheel places it on the upper end of the spectrum of aggressiveness among Standard Abrasives™ Unitized Wheels. Given the coarseness of the mineral and the greater density, this wheel is able to withstand high-pressure applications and cut aggressively, making it well-suited for deburring and polishing applications.

Use our Standard Abrasives™ 900 Series Unitized Wheel for deburring stainless steel pipe thread, wire edges from surgical instruments, stainless steel sinks, tanks and other equipment for the food service industry. It is a prime choice for deburring gears and aircraft wing spars, and breaking edges on aluminum extrusions. When it comes to polishing, trust the 900 Series A/O Unitized Wheel to effectively polish stainless steel rule dies, welds on stainless steel sinks, machined surfaces, hand tools and round tubing.

Compatible with a Variety of Tools
Unitized wheels are typically used on a die grinder. A benefit of unitized wheels is that they are bi-directional and can be mounted on a tool or pedestal grinder without regard to the direction of the spindle rotation. This means the Standard Abrasives™ Unitized Wheel can be used with a variety of tools, and regardless of which way the workpiece is fed through the machine, the wheel will be able to respond, giving operators more flexibility. The stiffness of the unitized construction enables operators to use thinner wheels to access awkward angles with grinding tools.

Series 900 wheels comes in a range of diameters from 1-6" and requires a unitized wheel mandrel (sold separately) for attachment to the tool. Quick change wheels are also available (sold separately).
 
Standard Abrasives™ Aluminum Oxide 900 Series Unitized Wheel
Get high performance and
durability in a variety of
cleaning, deburring, finishing
and polishing applications.
Non-Woven Unitized Construction Offers a Step Up in Density and Durability for Stubborn Surfaces
Standard Abrasives™ Unitized Wheels are a great match for tough deburring, cleaning, blending and finishing applications. They come in a broad range of densities and grades to suit different metals, the degree of aggressiveness required, shape of the part, and desired finish. Although used for some of the same tasks as Standard Abrasives™ Buff and Blend products, they are designed with a far stronger and denser construction to support more aggressive applications and accomplish material removal more rapidly. Even though unitized wheels are much stiffer products, the non-woven nylon fibers of the wheel maintain the advantage of responding to surface irregularities while preserving the geometry of the piece, and produce a consistent finish.

Unitized wheels are created by starting with layers of open web material that combines non-woven fiber strands and abrasive mineral with a tough resin bond. These layers of web are then cured and compressed together. By fusing layers of open web, the abrasive gains more toughness and durability, so it can withstand repeated wear.

Ultimately, the wheel's durability is what makes it such a good match for edges. Regardless of the diameter or thickness of the wheel, it maintains its structural integrity to remain a stiff and long-lasting abrasive even under high pressure. Additionally, as the layers wear, the wheel can be dressed to maintain its shape.

Load-Resistance Boosts Life and Performance
Standard Abrasives™ Unitized Wheels are load-resistant to keep you cutting with fresh mineral. The gaps in the open web allow unwanted swarf to escape. Consequently, less debris clogs the abrasive, so the mineral can stay fresh, keep cutting sharp and deliver a consistent cut over the life of the product. As the fibers break down and fresh mineral is exposed, it reduces the likelihood of dull or blunt mineral smearing the surface, contributing to cleaner surfaces and less re-work. Furthermore, manual fatigue that may result from applying heavy pressure to a dull abrasive is reduced.

The Many Benefits of Standard Abrasives™ Non-Woven Products
Standard Abrasives™ Unitized Wheels offer many benefits for heavy-duty jobs. For all the aforementioned reasons, Standard Abrasives™ Unitized Wheels invigorate deburring, cleaning, blending and finishing applications by helping operators reduce finishing steps, minimize costs and achieve greater throughput.

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Large Volume Order

If you are considering a large purchase of this or other 3M Abrasive products our inside sales team is ready to help by providing additional information and options that our industrial customers typically seek when making abrasive procurement decisions. Our technical expertise, customer support, and global capabilities put us in a unique position to address your biggest challenges, and we’ll do our best to prove that we should be your abrasive supplier of choice.


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