HOW TO READ A GRINDING WHEEL SPEC

The Measurement of a Grinding Wheel

Diameter of grinding wheel x Thickness of grinding wheel x size of arbor hole -

We will reference the AA Abrasives #60397 - 12x2x1-1/4 Pedestal Grinding Wheel T-1 Vitrified A36 - from our Vitrified Bonded Grinding Wheel Series.

12=Diameter x 2=Thickness x 1-1/4=Arbor Hole

*Note that the arbor hole can be bushed down meaning a bushing may be inserted in the arbor hole to reduce the size of the arbor hole.

Pedestal Grinding Wheel

What does the rest of the description mean after the size?

T-1 means the grinding wheel is flat. This is also referred to as a Type 1 Grinding Wheel or a straight toolroom wheel;

Vitrified is the bonding of grinding wheel;

A36 - A means it is an aluminum oxide grinding wheel and the 36 means the grinding wheel is composed of a medium grain size also known as grit.  See the grain size chart below.

A/O  also means aluminum oxide;

RPM is the Revolutions Per Minute or Maximum Operating Speed  - not all specifications will show this. The tool, the grinding wheel and application must be in agreement to ensure safe operation.

Grinding Wheel Specification Sheet

Grain Size/Grit:

Coarse: 8, 10, 12, 14, 18, 20, 24

Medium: 30, 36, 46, 54, 60

Fine: 80, 100, 120, 150, 180

Grade:

Soft: B, D, E, F, G, H

Med:  I, J, K, L, M, N

Hard: O, P, Q, R, S, T

Bond:

V- Vitrified

B- Resin

B2: Resin Bonded

BF: Reinforced Resin

Grain Types:

A- Dark Aluminum Oxide – Most common grain. Used for Heavy Duty General Purpose

AS3- 20% Ceramic Aluminum Oxide, 30% Pink Grain, 50% White Grain. Excellent for form and corner holding.

AZ- Blue Aluminum Oxide- Grinds fast with excellent cool cutting action and requires minimal dressing.

RA- Red Aluminum Oxide (Ruby)- Harder grain and sharper than PA & AZ wheels good for steels with high level chromium

PA- Pink Aluminum Oxide- General Purpose Grain that is tough but friable. Tool Room sharpening applications.

WA- White Aluminum Oxide- Highly friable grain for fast cool cutting. Good for light grinding on all steels particularly on tool and die steels.

GC- Green Silicon Carbide- very friable use for carbide grinding applications.

AA Abrasives carries its own line of Grinding Wheels.  We are also an authorized distributor of Norton Grinding Wheels. 

Visit our webstore to view our full line of abrasives and industrial power tools.

aaabrasives.com

Our webstore is open 24/7.

We are available by phone M-F 8:30 - 5 EST

1-800-888-1802

QUICK CHANGE SANDING DISCS at AA ABRASIVES

AA Abrasives, Inc. carries a full line of Quick Change Mini Sanding Discs. Quick Change Sanding Discs are available in aluminum oxide, premium zirconia alumina and ceramic plus. These quick-change mini sanding discs available in a 1” to 4” range are perfect for grinding contoured and irregular surfaces, and are excellent on a wide range of general purpose applications.  Quick Change Mini Sanding Discs offer tool-free, twist-on fastening systems making fast work of disc changes. This will allow you to maximize productivity by minimizing downtime.

Quick Change Sanding Disc Guide

AA Abrasives Quick Change Sanding Discs T-R A/O Cloth
 

1. AA Abrasives Quick Change Sanding Discs T-R Aluminum Oxide Cloth

Recommended use:

• General purpose grinding and aggressive stock removal;
• Weld Removal in grits 36 through 60;
• Blending of pits, gouges, and surface imperfections use grits 80-150;
• Deburring, Edge breaking, surface leveling.

AA Abrasives Quick Change SandingDiscs T-R Zirc Plus

2. AA Abrasives Quick Change Sanding Discs T-R Zirc Plus Cloth

Recommended use:

• Grinds high nickel alloys, titanium and other exotic metals;
• Remove weld and grind through inclusions such as nodular cast iron;
• Great on composites that wear other abrasives grains.

3. AA Abrasives Quick Change Sanding Discs Ceramic Plus Cloth

AA Abrasives
Quick Change Sanding
Discs T-R and T-S
Ceramic Plus

Recommended use:

• Aggressive stock removal with heat dissipation;
• High-pressure applications such as grinding hot castings;
• Extended life and grain retention;
• Grind high temperature alloys such as cobalt, chrome, hastelloy and Inconel

4. AA Abrasives Surface Condition Quick Change Sanding Discs T-R Premium

AA AbrasivesSurface Condition QuickChange Discs T-R

Recommended use:

• Deburring and Surface preparation;
• Weld splatter removal;
• Scale removal;
• Blending, Finishing and Leveling.

Quick Change Sanding
Disc Thread Diagram

AA Abrasives Inc., Quick Change Mini Sanding Discs are available in T-R Quick Change Attachment System which is also known as a Male thread. This refers to the plastic nub on the back of the sanding disc. It is equivalent to 3M ™ Roloc ™ TR, Norton TR/Merit Type III discs and Standard Abrasives LokIt discs.

AA Abrasives also offers T-S Quick Change Attachment System discs sometimes referred to as Female Thread. This refers to the metal “open button” on the back of the sanding disc and is comparable to Norton TS/Merit Type II discs and 3M Roloc TSM and Standard Abrasives™ TS SocAtt discs.

We also carry the backing pads needed for the quick change sanding discs. They are compatible with the 3M Roloc and similar button attachment systems.

Back Up Pad for Quick Change Sanding Disc T-S

Back up Pad for Quick Change Sanding Discs T-R

Visit our website at aaabrasives.com

Or call to speak to a technical abrasives applications specialist

1-800-888-1802

Premium Gold Sandpaper-Aluminum Oxide at AA Abrasives

Gold Sandpaper Sheets

AA Abrasives’ 9x11 premium gold aluminum oxide no-load sand paper sheets are great for sanding water based finishes, special stearate coating will not leave fish eyes.  These abrasive sheets are non-loading and do not leave a residue.  Other applications include sanding metals, woods, fiberglass, composites, plastics, lacquers, paint, body fillers and other dry sanding uses.  Gold sandpaper sheets are known for their fast cut rates, flexibility and consistent finishes.  They are resin on resin bond and high quality latex backed paper.  AA Abrasives premium aluminum oxide gold sandpaper sheets last 3 times longer than our competitors’ traditional sandpaper.  #60 grit thru #120 grit are C-weight, #150 grit thru #320 grit are B-weight, and #400 grit and #600 grit are A-weight backed paper. 

Sanding Sheet size – 9” x 11”

Gold Sanding Discs - PSA

Made from the same premium abrasive materials as our popular 

PSA gold stearate sanding discs.  AA Abrasives uses premium aluminum oxide grain for our PSA discs. AA Abrasives premium gold sanding discs are available in stacked or roll packages to suit your shops needs. Check out our blog on PSA gold stearate sanding discs here.

Experience AA Abrasive Premium Gold Sandpaper sheets’ exceptional performance for yourself. AA Abrasives premium gold sandpaper has a long lasting abrasive life and is the best in its class for dry sanding. This is a resin coated aluminum oxide sanding paper. It can be used for sanding bare wood, coating removal and for between coat sanding to achieve a uniform finish.

AA Abrasives' Premium Gold Sandpaper Sheets

Available Grits - You can find pricing here:

Premium Gold 9x11 #600 Grit Sandpaper Sheets A/O NoLoad #15424

Premium Gold 9x11 #400 Grit Sandpaper Sheets A/O NoLoad #15420

Premium Gold 9x11 #320 Grit Sandpaper Sheets A/O NoLoad #15416

Premium Gold 9x11 #240 Grit Sandpaper Sheets A/O NoLoad #15408

Premium Gold 9x11 #220 Grit Sandpaper Sheets A/O NoLoad #15404

Premium Gold 9x11 #180 Grit Sandpaper Sheets A/O NoLoad #15399

Premium Gold 9x11 #150 Grit Sandpaper Sheets A/O NoLoad #15395

Premium Gold 9x11 #120 Grit Sandpaper Sheets A/O NoLoad #15391

Premium Gold 9x11 #100 Grit Sandpaper Sheets A/O NoLoad #15387

Premium Gold 9x11 #80 Grit Sandpaper Sheets A/O NoLoad #15383

Premium Gold 9x11 #60 Grit Sandpaper Sheets A/O NoLoad #15379

Our online abrasives store is always open - Visit us at aaabrasives.com anytime.

Or call 1-800-888-1802 to speak to an abrasives specialist - M-F 9-4 EST