USING ELECTRIC BENCH GRINDERS CONTINUED
Ensure that wheel guards, tool rests, and shields are
properly positioned before applying power.
Stand to the side of the grinder
when turning it on. Allow the
machine to' run for one minute
before engaging the wheel with
the work. The turn-on period is
the most likely time for a wheel to
Keep the tool rest as close to the
using the grinder, take small cuts
with moderate pressure.
Never use a glazed, worn, or uneven
wheel: replace it.
Never operate the grinder or attempt any repairs without
having a thorough knowledge of the grinder's operation.
PORTABLE ROTARY POLISHERS AND GRINDERS
Portable rotary polishers and/or
grinders are either electric or
pneumatic powered types of
various speed ranges. Wheels
used on these tools vary from
coarse grit for metal removal,
fine grit for paint or rust removal,
When mounting wheels on spindles, the following procedures
should be used:
Inspect the grinding wheels for flaws and make the "ring" test.
Clean the bearing surfaces of wheel, flanges and spindle so
that clamping pressure will be evenly distributed.
Make sure that the hole in the wheel
busing is the right size for the spindle
(neither too small nor too large.)
Use flanges that are recessed and large
enough to clamp the wheel well toward
Tighten spindle end nuts just enough to
keep the wheel from moving out of
position between the flanges.
Eye protection must always be used when
operating these tools. A grinding wheel
that has a glazed surface or an uneven
wheel should never be used.
A hand held polisher or grin der must
always be equipped with an operating
switch that is either spring loaded or
air pressure loaded to the cut off
position to cut off power when the
hand grip is released. Tools without
this equipment should be discarded.
Grinding wheels used must always be
rated at a speed equal to or greater
than the tool it will be used on.
These tools should only be used on
grinding or polishing from moving or
throwing the object. This tool shall
never be used to grind or polish an
item that is held by hand.
These tools will never be equipped
with a tool rest, but must always be
equipped with a guard that will cover
not less than one half the periphery of
the wheel being used.
Change 3 52-14.1/ (52-14.2 blank)