1. All 3M Products

Standard Abrasives™ Type 27 Unitized Wheel - 500 Series

Products
  • 4-1/2˝ Type 27 center hole wheel fits 4-1/2˝ right angle grinder to help reach right angles on the workpiece
  • Soft density silicon carbide wheel blends surfaces to a fine finish
  • Soft density offers exceptional conformability for applications with close tolerances
  • Cuts faster than Standard Abrasives™ Buff and Blend non-woven products, though with less flexibility
 More...
Grade
Products Available
Available options:
 Grade
All Options
Close
Specifications
Attribute Name
Value
Attachment Type
Center Hole
Brand
Standard Abrasives™
Center Hole Diameter
0.875 in
Center Hole Diameter (Metric)
22.225 mm
Diameter
4.5 in
Diameter (Metric)
114.3 mm
Form Material
524, 532
Form Type
Type 27
Grade
Fine, Medium
Max RPM
10000
Mineral Type
Silicon Carbide
Product Form
Wheel
Width
0.5 in
Width (Metric)
12.7 mm
Product Details
  • 4-1/2˝ Type 27 center hole wheel fits 4-1/2˝ right angle grinder to help reach right angles on the workpiece
  • Soft density silicon carbide wheel blends surfaces to a fine finish
  • Soft density offers exceptional conformability for applications with close tolerances
  • Cuts faster than Standard Abrasives™ Buff and Blend non-woven products, though with less flexibility
  • Silicon carbide mineral suits ferrous and non-ferrous metals, including exotic metals and titanium, as well as composites
  • Runs clockwise and counterclockwise, allowing greater versatility
  • 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

When faced with blending or finishing tricky areas such as internal right angles, choose Standard Abrasives™ Type 27 Unitized Wheel - 500 Series for easier access and excellent results. The wheels have a soft, conformable density, making them a good match for light-pressure blending, finishing and polishing on flat or contoured parts. They offer operators the finesse needed for a precise finish.

Soft Density Silicon Carbide Wheel Polishes with Precise Results
Among Standard Abrasives™ Unitized Wheels, the 500 Series provides the softest density, and is available in medium (MED) and fine (FIN) grade silicon carbide (S/C). The Standard Abrasives™ Type 27 Unitized Wheel - 500 Series combines soft density and sharp-cutting S/C mineral, making these wheels a good match for applications where a fine finish is more important than cut, such as polishing soft metals prior to the coating process. Due to their conformability, these wheels are great for projects with strict tolerances, because they respond to surface irregularities without gouging or undercutting the part. After prolonged use, the wheel may be dressed to maintain its shape.

Choose the Right Wheel for Your Finishing Application
Our Standard Abrasives™ 500 Series includes two Type 27 Wheels:

Wheel 532

  • Fine grade silicon carbide
  • Requires light pressure for fine finishing and polishing
  • Highly conformable
  • Provides clean, bright surface finish on stainless steel
  • Best when run at slower speeds for fine finishes

Wheel 524

  • Medium grade silicon carbide in a denser configuration
  • Similar to Wheel 532, but with extra layer for durability
  • Provides greater rigidity than Wheel 532, for more precise finishing applications
  • Higher cut and finishing rate than Wheel 532
  • Ideal for high contact pressure applications where cut rate and durability are important

Type 27 Fits 4-1/2" Right Angle Grinder
A 4-1/2" Type 27 Wheel (sometimes called a Type 27 Disc) is designed to fit a right angle grinder with a wheel guard, typically used for fiber discs, flap discs and grinding wheels. Type 27 Wheels have a depressed center to allow grinding at any angle without damaging the surrounding surface with the attachment nut, and are particularly useful for working on internal angles. These unitized wheels are used in conjunction with, and sometimes in lieu 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 (sold separately).

Standard Abrasives™ Type 27 Unitized Wheel - 500 Series
Non-woven nylon strands will not melt or smear when heated, reducing potential for unwanted marks and blemishes
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. The wheel is tough enough to complete high-pressure edgework without tearing or otherwise disintegrating. 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-Resistant Construction 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.

Customer Reviews
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 87ms
  • REVIEWS, PRODUCT
  • bvseo-msg: The resource to the URL or file is currently unavailable.;
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.


All fields are required unless indicated optional

  • 3M takes your privacy seriously. 3M and its authorized third parties will use the information you provided in accordance with our Privacy Policy to send you communications which may include promotions, product information and service offers.

    Please be aware that this information (including the original and the subsequent reply) may be transferred to a server located in the U.S. for metrics and storage. If you do not consent to this use of your personal information, please do not use this system.

  • Send