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Do's
- Before changing a wheel switch off the machine and the power, pull
out the plug and release any lock on the switch.
- Always visually inspect all wheels for damage before mounting.
- Make sure, before starting the machine, that the wheel guard is adjusted
to the best position and secured in place.
- Fit the side handle as required, usually to either side of the grinder
depending if a person is left or right handed.
- Always use the tools supplied by the machine manufacturer to change
the wheel.
- Always use the correct flanges and ensure that they are not damaged,
clean and free from burrs.
- Check that the spindle speed marked on the machine is not greater
than the operating speed marked on the wheel.
- Check that the wheel is correctly marked up for type, diameter, bore
size, speed-both rpm and metres per second and is marked as suitable
for use on metal or stone.
- Blotters are required between the wheel and the flanges on 450mm diameter
discs and above. They are not required on wheels less than this size
on portable machines.
- Allow newly mounted wheels to run at maximum operating speed with
the guard in place, for at least one full minute before use.
- Wear appropriate safety clothing such as ear protection, dust masks,
goggles and gloves. Any eye protection must be marked BS2092 and be
of grade 1 impact.
- Always use the machine in a clear area, stand in a comfortable position
with a secure foothold where the body is well balanced and machine well
supported.
- Hold the machine at an angle between 30 to 45 degrees to the work
when using depressed centre grinding wheels.
- Always make certain the work is firmly secured when cutting or grinding.
- Check machine speeds regularly, especially after maintenance or repair.
This is particularly important for petrol or pneumatic machines.
- Always handle and store all wheels carefully. Cutting-off wheels should
be stored flat.
- Depressed centre wheels should be stacked on top of one another.
- Keep the cables clear of the disc or wheel to avoid the risks of cutting.
- Use only reinforced cutting-off wheels on portable machines. Non-reinforced
wheels should only be used on fixed machines with the correct guards.
- If in doubt always refer to a qualified instructor or safety officer.
Do Nots
- Mount a damaged wheel.
- Exceed the maximum operating speed marked on the wheel/disc.
- Use mounting flanges which are damaged, dirty or incorrect.
- Force a wheel onto the spindle of a machine.
- Tighten the locking nut excessively, hand tightness is usually sufficient.
Never use a chisel etc to tighten flanges or locking nuts.
- Use a machine without a guard secured in place.
- Use blotters with depressed centre wheels.
- Grind on the centre of cutting wheels.
- Apply excessive force to push the wheel into the work or allow the
wheel to be trapped or pinched in the cut.
- Grind with a depressed centre grinding wheel at an angle below 30
degrees.
- Stop the machine by applying pressure to the wheel.
- Lower a portable machine by its cable to the floor, this can cause
cracking to the wheel.
- Use a machine in a position which is not clear.
- Put the machine on the floor, workbench until the wheel/disc has stopped
rotating.
- Handle wheels roughly.
- Use non-reinforced wheels on portable machines under any circumstances.
Intended as general information only. These notes are not a substitute
for proper training. |
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Bonded 
Coated 
