SKU | 7010367876 |
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Legacy SKU | 66000201443 |
UPC | 00051115401220 |
For stock removal and polishing on tricky areas such as internal right angles, choose the Standard Abrasives Type 27 Unitized Wheel - 800 Series for easier access and excellent results. These hard density wheels are designed with extra tough edge durability, making them a good match for heavy-duty edge deburring and stainless steel polishing applications.
- 4-1/2˝ Type 27 center hole wheel fits 4-1/2˝ right angle grinder to help reach right angles on the workpiece
- Hard density non-woven material combined with medium to coarse mineral results in superior edgework deburring and polishing
- Harder material density and increased edge durability over 700 Series Unitized Wheels increases cut and life for heavy-duty tasks
- Runs clockwise and counterclockwise, allowing greater versatility when paired with tools and machines
- Open web is load resistant, contributing to longer abrasive service life
- Non-woven nylon strands will not melt or smear when heated, reducing potential for unwanted marks and blemishes
Product Dimensions |
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Diameter | 4-1/2 in | 114.3 mm |
Center Hole Diameter | 7/8 in | 22.225 mm |
Shipping Dimensions |
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Weight | 1.437 lb |
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Length | 6.3748 in |
Width | 6.3748 in |
Height | 3.6878 in |
PRODUCT FAQ
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Certainly! Here are the questions and answers
Can you tell me more about 3M's Private Label - Type 27 Unitized Wheel, 77890, 821?
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Of course! Our Type 27 Unitized Wheel is designed for blending and finishing on contoured surfaces. It provides consistent performance and a smooth finish.
What are the dimensions of this unitized wheel?
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The Type 27 Unitized Wheel measures 4-1/2 inches in diameter, with a thickness of 1/2 inch and a standard arbor size of 7/8 inch.
What material is the wheel made of?
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This unitized wheel is constructed from durable nylon material, which ensures long-lasting performance in various applications.
How many unitized wheels come in each case?
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Each case contains four unitized wheels, making it convenient for stocking up or using them across multiple projects.
The Standard Abrasives Type 27 Unitized Wheel - 800 Series is a highly aggressive wheel that is designed to remove challenging burrs with precision and impart a fine polish. With its hard density, this wheel is able to withstand high-pressure applications and cut aggressively. It is an ideal choice for deburring stainless steel pipe thread, wire edges from surgical instruments, stainless steel sinks, tanks, and other equipment for the food service industry. Additionally, it is highly effective for deburring gears and aircraft wing spars, as well as breaking edges on aluminum extrusions. When it comes to polishing, the 800 Series Wheel is trusted to effectively polish stainless steel rule dies, welds on stainless steel sinks, machined surfaces, hand tools, and round tubing.
Choose the Right Wheel for Your Stock Removal ApplicationThe Standard Abrasives 800 Series includes three Type 27 Wheels:
- Wheel 811
- Coarse grade aluminum oxide mineral
- Highest stock removal and edge breaking capability
- Most aggressive for deburring
- Capable of replacing 80 & 120 grit coated abrasive discs
- Wheel 821
- Medium grade aluminum oxide mineral
- High stock removal, while maintaining disc life and productivity
- Very durable on an edge
- Capable of replacing 100 & 120 grit coated abrasive discs
- Wheel 822
- Medium grade silicon carbide mineral
- Rapid stock removal, while providing a clean, bright surface
- Most effective on stainless steel
- High cut rate, with long life
A 4-1/2 Type 27 Wheel, also known as a Type 27 Disc, is specifically designed to fit a right angle grinder with a wheel guard. These wheels are typically used for fiber discs, flap discs, and grinding wheels. Type 27 Wheels have a depressed center that allows grinding at any angle without damaging the surrounding surface with the attachment nut. They are particularly useful for working on internal angles. These unitized wheels can be used in conjunction with, and sometimes in place of, a coated abrasive resin fiber disc or flap disc. Standard center hole and quick change unitized wheels are also available in a range of sizes.
Non-Woven Unitized Construction Offers a Step Up in Density and Durability for Stubborn SurfacesStandard Abrasives Unitized Wheels are specifically designed for tough deburring, cleaning, blending, and finishing applications. They come in a variety of densities and grades to suit different metals, the required level of aggressiveness, the shape of the part, and the desired finish. While they can be used for similar tasks as Standard Abrasives Buff and Blend products, Unitized Wheels are constructed with a stronger and denser construction to support more aggressive applications and achieve rapid material removal. Despite their stiffness, the non-woven nylon fibers of the wheel allow it to respond to surface irregularities while maintaining the geometry of the piece and producing a consistent finish.
Unitized wheels are created by layering open web material that combines non-woven fiber strands and abrasive mineral with a tough resin bond. These layers are then cured and compressed together, resulting in a wheel that is tougher and more durable. This allows the wheel to withstand repeated wear and complete high-pressure edgework without tearing or disintegrating. Regardless of the diameter or thickness of the wheel, it maintains its structural integrity and remains 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 PerformanceStandard Abrasives Unitized Wheels are load-resistant, meaning they are designed to keep cutting with fresh mineral. The gaps in the open web structure allow unwanted swarf to escape, reducing debris that can clog the abrasive. This allows the mineral to stay fresh, sharp, and deliver a consistent cut throughout the life of the product. As the fibers break down and fresh mineral is exposed, the likelihood of dull or blunt mineral smearing the surface is reduced, resulting in cleaner surfaces and less re-work. Additionally, the load-resistance of these wheels reduces manual fatigue that may result from applying heavy pressure to a dull abrasive.
The Many Benefits of Standard Abrasives Non-Woven ProductsStandard Abrasives Unitized Wheels offer numerous benefits for heavy-duty jobs. They invigorate deburring, cleaning, blending, and finishing applications by helping operators reduce finishing steps, minimize costs, and achieve greater throughput. With their strong and dense construction, these wheels are able to tackle tough materials and achieve rapid material removal. The load-resistance of the wheels ensures a consistent cut throughout their life, reducing the need for re-work. Overall, Standard Abrasives Unitized Wheels are a reliable choice for achieving high-quality finishes and improving productivity.