Grinding Wheels
Industry
Metal / |
| Stainless |
| Asphalt |
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General Purpose |
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Concrete / |
| Pipeline |
| Aluminum |
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Masonry |
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ANSI Standard Marking System
The following chart is an example of the ANSI standard marking system for identifying Bosch grinding wheels and other bonded abrasives: Sample of typical marking: A 30
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A | 30 |
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| T |
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| BF |
Primary Grain Used | Size of the Abrasive Grain | Hardness of Bond |
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to Make the Wheel | Very coarse | Soft |
| Medium |
| Hard | B_____ Resinoid | |||
A = Aluminum oxide | Coarse |
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| BF_ __ Resinoid Reinforced | |
AS = Aluminum oxide | Medium | N | P | R | S |
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special | Fine |
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C = Silicon carbide | Dust fine |
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CS = Silicon carbide |
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special |
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Z = Aluminum zirconium |
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Wheel Configurations and Uses
Bonded abrasive wheels have different configurations depending upon the tool on which the wheel is used and the desired end results. Below are the configurations that a wheel can have.
Type 1A | Type 1 | Type 27A | Type 27 | Type 28 Type 29 | Type 11 | |||||||||
(ISO 41) | GRINDING | Cutting | Blending | Grinding | Blending | Grinding | ||||||||
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Cutting |
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| Grinding |
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| Grinding |
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| C |
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| C |
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C | C | C | C |
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C |
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| B | B | ||
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B |
| B | B |
| B |
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A | A | B |
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A | A | A | A | A |
Straight | Straight | Depressed | Depressed | Saucer- |
| Flexible | Flared Cup | |
Wheel | Wheel | Center | Center | shaped |
| Wheel | Wheel | |
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| Wheel | Wheel | Wheel |
| Flap Disc |
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Type 1A | Bench or | Type 27A | Type 27 | Type 28 |
| Type 29 | Type 11 Steel- | |
(ISO 41) | Type 1 | To be used at | For use on flat | To be used | For blending and | Concrete | ||
Used at a 90° | Used for edge | a 90° angle | surfaces for | for weld | stock removal on | Used for removing | ||
angle for | grinding at a | for light | weld prep, | preparation | uneven surfaces, | excess material | ||
cutting only. | usually on bar | and | best used at a | and | ||||
No grinding. | Not for cutting |
| stock or angle | surfaces. Tool | 10° angle. This | large flat surfaces, | ||
| applications. |
| iron. Tool best | usually used at | allows user to | allowing for | ||
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| used at a | a 15° angle, to | use one wheel | maximum surface | ||
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| 30° angle. No | cover greater |
| for grinding | area coverage | |
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| cutting. | surface area | and finishing. | – tool used | ||
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| and allow |
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| perpendicular |
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| better visibility. |
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| to work. |
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A = Wheel diameter | B = Wheel width or thickness C = Wheel bore |
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Toll Free: | Boschtools.com 167 |
