Abrasive Wheels Training - Online Course

Introduction to abrasive wheels

The first topic identifies what an abrasive wheel is and what they are used for, and explains what organic and inorganic bonded wheels are. The topic describes various methods used in the construction of abrasive wheels to strengthen them to avoid breakage. You will also learn about the different abrasive wheel types and their wide range of applications.

Abrasive wheel identification

The second topic outlines how abrasive wheels are labelled so that you can check that the correct wheel has been selected for the equipment and task you need to carry out. It also identifies any restrictions placed on the use of the wheel and precautions you must take when using the wheel. You will also learn about where to find the wheel dimensions and the importance of never exceeding the maximum permissible speed of the wheel. The topic also covers how to read the specification mark to understand the abrasive type, grain size and bond of the abrasive wheel.

Hazards and health risks

The third topic describes the principal risks of injury and long term ill health associated with the handling and use of abrasive wheels. It explains the term drawing-in. It outlines the risks of sudden breakage of the abrasive wheel that can cause serious life-changing injuries. The topic also explains the term silicosis and the effect of exposure to large amounts of dust that contains crystalline silica causes. It also covers other health risks including exposure to loud noise and how prolonged exposure to hand-arm vibration (HAV) during grinding and cutting-off operations can damage joints, nerves and blood vessels.

Important legislation

Topic 4 provides an overview of important legislation that aims to protect people in the workplace from injury and ill health.

Handling, storage and disposal

Topic 5 explains how to avoid damaging abrasive wheels during handling and storage. It covers the precautions to take when handling abrasive wheels and how to store abrasive wheels. The topic also explains the effect of damp, cold, heat and humidity on stored abrasive wheels. Lastly, the topic covers how to safely dispose of used abrasive wheels.

Selecting the correct wheel

Topic 6 identifies the main things to consider when selecting an abrasive wheel. It explains how a number of factors determine the selection of an abrasive wheel including the wheel size, operating speed, the material being cut, the wheel grade and grain size and the type of cut.

Wheel inspection and mounting

Topic 7 outlines how to inspect and test abrasive wheels before mounting and the key considerations when mounting a wheel. It explains the importance of inspecting new and used wheels before use. The topic also covers how to use the ‘ring test’ to check wheels for damage. It identifies the purpose of flanges, blotters and bushes. Finally, the topic explains the term run-out and how excessive run-out puts additional stress on the wheel which increases the risk of breakage.

Guards and shields

Topic 8 outlines the purpose and common types of guards and shields. It explains the requirement of guards and shields and covers the types of guards and shields required for bench grinders, angle grinders. Lastly, the topic covers the wheel enclosure angles for fixed machines.

Wheel truing and dressing

Topic 9 explains why wheels must be trued and dressed and how this is done. It identifies why it is necessary to true and dress wheels, the difference between truing and dressing and what truing and dressing wheels involves. It also outlines the tools commonly used for dressing wheels and finally, the topic covers the dressing process.

Portable and hand-held equipment

Topic 10 provides an overview of additional precautions you should take when you use portable and hand-held equipment such as angle grinders. It identifies the wheels that cannot be used on portable machines. The topic also explains electrical safety advice and electric shock protection. It explains how routine checks, regular inspection and preventive maintenance are essential to avoid accidents. Finally, the topic covers safety checks for internal combustion powered equipment.

Managing the risks

The final topic outlines the purpose and essential steps of an abrasive wheels risk assessment and recaps on the things you should do to stay safe when using abrasive wheels. The topic covers how to use the hierarchy of control to prioritise measures to keep people safe. Lastly, the topic summarises the day-to-day measures that you can use to stay safe when using abrasive wheels.