ABRASIVE
WHEELS
©HSS Hire Service Group Plc 1997 No. 631/01
Group Office: 25 Willow Lane, Mitcham, Surrey CR4 4TS
Hire Shops
Reinforced, depressed-centre
GRINDING WHEELS. Reinforced,
flat CUT-OFF WHEELS.
Operating & Safety Guide 631
Use the right wheel mounting flanges,
ensuring they
are clean, undamaged and free from burrs.
Make sure the flange size is compatible with the size
if the wheel
(see table).
Above 230mm the flange
diameter must be one third that of the wheel.
To fit a wheel, follow the instructions supplied with
your machine.
If you have hired the machine from HSS, contact your local
HSS Hire Shop if you have any problems.
In any case,
never force a wheel onto the machine’s
spindle
and
never over-tighten the machine’s
mounting bolt/flange.
Before switching the machine back ON,
remember to
reposition the safety guard.
Finally,
run newly fitted wheels at operating speed for
at least one minute before using them
to cut/grind.
This helps ‘seat’ the wheel and lets you double-check that
you have fitted it correctly. Clear the work area while doing
this.
DO throw used wheels away, NEVER re-use a wheel
once it has been removed from a machine.
Make sure the workpiece is firmly and safely secured.
If using a portable machine,
adopt a comfortable,
balanced stance that lets you support and control the
machine, keeps the whole of your body clear of the
wheel, and lets you see clearly what you are doing.
Make sure,
too that
the work area is free from trip
hazards
and that the ground offers a secure footing.
If using a grinding wheel
with a depressed centre,
always hold it at an angle to the workpiece.
When cutting, work in a straight line,
taking care not
to trap or pinch the wheel in the cut.
Never try to force the wheel through the workpiece
and never apply pressure to the side of the wheel.
USING WHEELS
Never use a grinding disc for cut-off work or vice
versa.
If in doubt, contact your local HSS Hire Shop.
Regularly check the disc’s condition
and replace if worn
or damaged.
Ensure replacement discs are distortion free
and
undamaged and that the paper washers are not wrinkled
or torn.
NEVER FIT SUBSTANDARD OR OLD, USED
DISCS.
Don’t grind on the side of cut-off or grinding wheels
less than 4.5mm thick.
They are not strong enough. Use
the edge instead.
When you have finished
using a portable machine,
wait
for the wheel to stop turning and put the machine
down gently;
taking care not to knock the wheel. Ideally,
rest the machine, clear of the ground, on a suitable cradle.
Always let the wheel come to a halt naturally.
Never
apply pressure to the wheel in order to slow it down.
Contact your local
0990 282828
FLANGES FOR WHEELS
(From 100mm to 450mm diameter)
Wheel
Minimum Minimum Minimum Minimum
Radial width of
Diameter
Outside
flange
flange
depth of
bearing surface
diameter
thickness thickness
recess
of flange
at bore
at edge
of recess
(Minimum) (Maximum)
/mm
/mm
/mm
/mm
/mm
/mm
/mm
100
30
-
-
-
-
-
125
39
-
-
-
-
-
230
39
-
-
-
-
-
300
100
13
5
2
8
16
350
117
13
8
2
10
20
450
150
16
10
2
13
25
Guard Position
Disc
10–15
Degrees
90 Degrees
Grinding Operation
Cutting Operation
Guard Position
Disc
