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COATED
ABRASIVES
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PREPARATION FOR USE
Fibre discs must be used with the correct sized back-up pad. Do not use other fibre discs as a back-up pad.
The diameter of the disc must be at least 3mm but not more than 15mm greater than the diameter of
the back-up pad. Do not use a fibre disc which is damaged in any way. Always check visually for damage
before use. Make certain that both the disc and the back-up pad are fitted correctly to the machine spindle.
The maximum peripheral operating speed of a fibre disc is 80m/s. This is shown on the box label by way of
a red stripe, which is a FEPA Standard indicating a recommended operating speed of 80m/s. In no circumstances
should this speed be exceeded. The spindle speed of the machine must never exceed the maximum operating
speed of the disc: spindle speeds in rpm corresponding to 80m/s for different disc diameters are given below.
FIBRE DISCS
STORAGE
Fibre discs should be stored at a temperature of 18 – 22°C and 45% – 60% relative humidity.
GRINDING OPERATION
The fibre disc should only be brought into contact with the workpiece when the machine is running at its
operational speed. The disc should be applied to the workpiece at the shallowest angle possible – about
10 degrees is recommended. Grind ‘off’ an edge rather than ‘into’ it when grinding rough welds or metal edges.
Do not attempt to use a fibre disc for slot grinding, cutting off or wet grinding. After use the angle grinder should
be stored with care. The face of the disc must not be in contact with bench or floor.
PERSONAL PROTECTION
Safety goggles, ear defenders, safety gloves, dust masks and, if grinding conditions are severe, additional face
protection. Leather aprons and safety shoes must be worn.
MAXIMUM OPERATING SPEED
Disc Diameter
80m/s
Max RPM
100mm
15300
115mm
13300
125mm
12300
150mm
10200
180mm
8600
PERSONAL PROTECTION
Mouth
Protection
Wear
Gloves
Eye
Protection
Ear
Protection
Read
Instruction
Dry
Wet