Understanding the Marking System for Abrasive Wheels

04 Aug.,2025

 

Understanding the Marking System for Abrasive Wheels

A grinding wheel, also known as an abrasive wheel, is a wheel made of abrasive particles bound together by various substances, such as rubber, shellac or silicate. They are used by a variety of industries but, if not used safely, have the potential to cause serious injury.

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All abrasive wheels are prone to breakage so it’s essential that you always follow best working practices whenever they are in operation. One of the first control measures to adhere to is ensuring that you understand the marking system for grinding wheels.

Abrasive Wheel Markings

All abrasive wheels are marked with:

  1. Type.
  2. Size.
  3. Specification.
  4. Maximum operating speed.
  5. Restrictions for use.
  6. Other, non-safety related information.

They must conform to the British Standard (BS EN and BS ISO 525) system for marking. Take a look at the example below which shows each of the essential markings.

The type of the wheel is marked as an ISO number and signifies the wheel’s shape. For example, ISO Type 52 is a spindle-mounted wheel.

The size of the grinding wheel is marked as dimensions in mm. For example, 230 x 3 x 22.2mm. This represents the wheel’s diameter x thickness x hole size.

The specification of the grinding wheel is marked as a series of letters and numbers. For example, WA 60 K 7 V. This represents the type of abrasive material, the grit size, the grade, the structure and the bond type. A general guide to specification marking can be seen in the table here:

Example

Marking

Marking Codes

WA

Abrasive Material

A – regular aluminium oxide

WA – white aluminium oxide

19A – mixture of A and WA

SD – synthetic diamond

ASD – synthetic diamond, metal coating

FA – semi-friable aluminium oxide

PA – pink aluminium oxide

SA (HA) – single crystal aluminium oxide

23A – mixture of A and SA

AZ – zirconium oxide

C – black silicon carbide

GC – green silicon carbide

RC – mixture of C and GC

60

Grit Size

(Coarse) 10, 12, 14, 16, 20 etc. to 600, 800, 100, (Fine)

K

Grade

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(Soft) A, B, C, D, E etc. through to V, W, X, Y, X (Hard)

7

Structure

(Dense) 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 (Open)

V

Bond Type

V – vitrified

B – resinoid

R – rubber

O – MgO

E – epoxy

M – metal

EP – electroplated

The range of material markings, grit sizes, grades, structures and bonds depends on the product and the manufacturer, but the table above gives a general outline of common markings seen on abrasive wheels.

The maximum operating speed is marked on every large grinding wheel (above 80mm in diameter) in two ways:

  1. The peripheral surface speed, given in metres per second. For example, 80m/s.
  2. The rotational speed, given in revolutions per minute. For example, rpm.

For smaller grinding wheels (below 80mm in diameter), the maximum operating speed is provided on a separate notice which must be stored alongside the wheel.

For high speeds, colour-coded stripes are also marked across the centre of the wheel. The colours are:

  • 50m/s – Blue
  • 60m/s – Yellow
  • 80m/s – Red
  • 100m/s – Green
  • 125m/s – Blue/Yellow

The restrictions for use are marked on the grinding wheel using a code and, in some cases, a corresponding graphic. The markings used to show restrictions are as follows:

Restriction Code Meaning RE1 Not permitted for hand-held and manually guided
grinding RE2 Not permitted for hand-held cutting-off machines RE3 Not suitable for wet grinding RE4 Only permitted for totally enclosed working area RE6 Not permitted for face grinding


Non-safety related markings
found on grinding wheels are:

  • The manufacturer’s trademark/name.
  • The test record number, indicating it meets the standards for safety.
  • The expiry date if it’s an organic bonded wheel (this will be 3 years from the date of manufacture).
  • A traceable code number, indicating the source and manufacturing details of the wheel.
  • A mounting arrow, indicating the heaviest point of the wheel. The arrow should point downwards when the wheel is mounted.

If you work with abrasive wheels then having an understanding of their markings is essential, but this isn’t where your knowledge should end. All operators should have a strong awareness of the hazards associated with grinding wheels, as well as how to correctly store and handle them, inspect them for damage and follow appropriate control measures.

Further Resources:

The Top Features to Look for When Choosing a Dresser Tools ...

Selecting the right Dresser Tools Manufacturer is essential to ensure high-quality performance, durability, and efficiency in industrial applications. The dresser tools are directly related to the preservation of grinding wheels, so the most important factor in the associated productivity is selecting the right manufacturer. With so many available manufacturers, it is necessary to consider key factors before taking a decision. This guide outlines the top features to look for when selecting a Dresser Tools Manufacturer to ensure that you get the best products to suit your needs.

1. High-Quality Materials and Durability

The quality of material utilized in dresser tools directly impacts their performance and lifespan. Ensure to get a Dresser Tools Manufacturer that utilizes high-grade materials, such as industrial diamonds, tungsten carbide, or the premium abrasives. Long-lasting materials ensure longevity, thereby reducing replacement frequencies and minimizing operational costs.

2. Precision Engineering and Manufacturing Standards

A reputable Dresser Tools Manufacturer should adhere to strict engineering and manufacturing standards. Precision engineering ensures that dresser tools provide accurate dressing, improving grinding wheel performance. Manufacturers that follow ISO-certified processes and rigorous quality control measures deliver consistently reliable products.

3. Customization Options

Each industry has different requirements, and standard tools cannot meet the needs of every industry. Select a manufacturer that caters to Dresser Tools who would offer customized tools. If you require special shapes, sizes, or coating, then having a manufacturer who does all that ensures that you get exactly what you want and this will increase efficiency.

4. Modern Technology and R&D Capabilities

Technology is crucial for manufacturing high-performance dresser tools. The major producers invest in research and development for the implementation of new technologies for improving the performance and tool longevity. Consider the manufacturer who updates its products continually with changes in materials, coatings, and designs.

5. Product Line and Versatility

A good Dresser Tools Manufacturer should provide an extensive product line to be suitable for a range of industries and applications. Single-point diamond dressers, rotary dressers, or multipoint dressers would all fall within the realm of a diversified product line offered by a manufacturer. This will enable you to have the tool to suit your requirements.

6. Reputation and Industry Experience

Experience dictates choice on a Dresser Tools Manufacturer. The company that had spent several years producing excellent quality dresser tools would likely provide quality, reliable products. Review the manufacturer's history, client testimonials, and industry reputation to establish their credibility and reliability.

7. Cost-Effectiveness and Value for Money

While price is an important factor, choosing the cheapest option may not always be the best decision. Instead, consider a manufacturer that offers a balance between quality and cost. High-quality dresser tools may have a higher initial price but provide long-term value by reducing maintenance costs and increasing productivity.

8. Customer Support and After-Sales Service

Industrial tool manufacturers must offer reliable customer service. A manufacturer of Dresser Tools that ensures good after-sales service, technical support, and prompt response to queries will give a smooth experience. Look for manufacturers that can provide warranties, troubleshooting assistance, and training programs to maximize tool efficiency.

IMAT – Trusted Name in Dresser Tools Manufacturing

One of the prominent names in the industry for the manufacture of dresser tools is IMAT. With its reputation of innovation, precision, and quality products, it has come out as one of the strongest names for being a reliable manufacturer of Dresser Tools. Its extensive variety includes customized solutions as well as premier customer support to ensure the right dresser tools at industries to make sure the highest performance of grinding.

Conclusion

The right choice of Dresser Tools Manufacturer is significant for effective and prolonged grinding processes. From the thought process of material quality, precision engineering, customization options, and after-sales support, you can make the right choice. In this respect, an established company like IMAT will most definitely ensure you get the quality dresser tools to give you that productivity and success in operations. Always focus on quality and reliability when choosing a Dresser Tools Manufacturer to secure the best result in your industry.

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