The DOs and DON'Ts
DOs
✓ DO always handle & store wheels carefully. Cutting-off wheels should be stacked horizontally & flat, preferably on a steel base plate. Depressed centre wheels should be placed on top of each other or stored in the original packaging
✓ DO always visually inspect all wheels before mounting for possible damage in transit
✓ DO always use a safety guard & ensure that it is correctly positioned & securely fitted. It should cover at least one half of the wheel & protect the operator in the unlikely event of a wheel breakage. NON-REINFORCED CUTTING-OFF WHEELS SHOULD ONLY BE USED ON FIXED MACHINES & SHOULD BE CORRECTLY GUARDED.
✓ DO always switch ‘OFF’ the power at supply source &/or remove the plug from the socket before changing the wheel
✓ DO always ensure that the spindle speed of the machine does not exceed the operating speed marked on the wheel
✓ DO always use the correct wheel mounting flanges & ensure that they are undamaged, clean & free from burrs
✓ DO Allow newly mounted wheels to run at operating speed, with the guard in place, for a reasonable time before cutting or grinding
✓ DO always wear EYE PROTECTION
✓DO always wear appropriate safety clothing such as DUST MASK, GLOVES, EAR PROTECTION, and OVERALLS & SAFETY SHOES
✓ DO always have machine speeds checked regularly, especially after maintenance or repair. Machines fitted with speed control devices (Governors), must be properly maintained at all times
✓ DO Check tension of driving belts, where fitted, on a regular basis. Belts must be kept tight to ensure full power transmission.
✓ DO always secure the work piece firmly while it is being cut or ground
✓ DO Put portable machines in suitable cradles, when not being used, to avoid damage to the wheel
✓ DO always use a portable machine in a comfortable position, where the work piece is well balanced & the machine is well supported
✓ DO Grind at an angle above 30 degrees to the workpiece with a depressed centre grinding wheel
✓ DO Keep the working area around cutting & grinding operations clear. It is very dangerous if an operator trips & falls with an operating machine in his hands
✓ DO Read the safety instructions provided by the abrasives and equipment supplier
✓ DO Store abrasives in dry, frost-free conditions avoiding wide variations in temperature
✓ DO Ensure that the product is suitable for its purpose
✓ DO Handle, store and transport products with care
✓ DO Disconnect the power to the machine before fitting the product
✓ DO Examine all products before mounting and periodically during use for possible defects or damage (core flatness, fatigue cracks, undercutting, arbour hole damage...)
✓ DO Check that correct mounting devices are used and that they are clean, undistorted and free from burrs
✓ DO Ensure that work rests are properly adjusted and secure
✓ DO always use a correctly designed and adjusted guard (on belts)
✓ DO Ensure that the work piece is secure
✓ DO Wear appropriate personal protective equipment at all times
✓ DO Avoid clogging and uneven wear to ensure that the product is working efficiently
✓ DO Ensure accordance between product direction arrow / machine rotation
✓ DO be aware of the hazards likely during the use of abrasives and observe the recommended precautions to be taken: • Bodily contact with the abrasive product at operating speed • Injury resulting from product breakage during use • Grinding debris, sparks, fumes and dust generated by the grinding process • Noise • Vibration
DON’Ts
✘ DON’T Handle wheels roughly
✘ DON’T Use non-reinforced cutting-off wheels on portable machines
✘ DON’T Store wheels in a damp atmosphere or in extreme temperatures
✘ DON’T Mount a damaged wheel
✘ DON’T Tighten the mounting nut or locking flange excessively. To do so can distort the flanges
✘ DON’T Force a wheel onto a machine spindle
✘ DON’T Use mounting flanges which are incorrect, damaged, dirty or burred
✘ DON’T Use blotters with depressed centre wheels less than or equal to 406mm
✘ DON’T Use a machine which is not in good mechanical condition
✘ DON’T Use a machine without a wheel guard
✘ DON’T Use wheels without proper ventilation or dust protection equipment
✘ DON’T Apply side pressure to cutting-off wheels. You should not bend the wheel
✘ DON’T Stop the wheel by applying pressure to the periphery or face. Always switch the machine off & allow the wheel to stop revolving
✘ DON’T Allow the wheel to be trapped or pinched in the cut
✘ DON’T Apply excessive pressure onto the wheel so that the driving motor slows down
✘ DON’T Grind on the side of cutting-off wheels or depressed centre wheels below 4,0mm thickness
✘ DON’T Drop or lower a portable machine by the cable or airline onto the floor. A wheel can be easily cracked, if it is put down hard, by the weight of the machine. This is a common cause of wheel breakage
✘ DON’T Grind with a depressed centre grinding wheel at an angle below 30 degrees to the work piece
✘ DON’T Use a machine in a position where you do not have full control of the machine & you are not well balanced
✘ DON’T Allow untrained people to use abrasives
✘ DON’T Use a product that is damaged
✘ DON’T Use a product if it cannot be properly identified
✘ DON’T Use a machine that is not in good working order or one with defective parts
✘ DON’T Force the abrasive onto the mounting device or modify the size of the mounting hole
✘ DON’T Exceed the maximum operating speed marked on the product
✘ DON’T Apply shock or excessive force to the product or let it overheat
✘ DON’T Use mounting flanges which are not clean and flat
✘ DON’T Tighten the mounting device excessively
✘ DON’T start the machine until the guard is in place and fastened securely
✘ DON’T Continue to use a product if vibration occurs. True or replace it
✘ DON’T Grind on the part of the product which is not designed for the operation
✘ DON’T Start the machine with the work piece in contact with the abrasive product
✘ DON’T Grind material for which the product is not designed
✘ DON’T Stop the abrasive by applying pressure to its surface, let it stop naturally
✘ DON’T Wear loose clothing, ties and jewellery
✘ DON’T Use abrasive products near flammable materials.