4
INSTRUCTIONS
FOR
THIS TOOL
About Your Tool
WARNING
●
Protect your body from the chips/
fi
lings.
Hot chips/filings may fly out from the work piece.
Always wear safety glasses, dust mask, earplugs,
gloves (except knitted gloves) and long-sleeved
garment.
Keep your face well away from the work piece.
●
Always use a Grinding Wheel with a maximum
operating speed (m/s) rating equal to or exceeding
the labeled speed of the tool. Make sure the
dimensions of the Grinding Wheel you are using
is applicable to the speci
fi
cation of the grinder.
●
Make sure there are no cracks, chips or damage
to the Grinding Wheel prior to use. Do not use
any wheels wet or without labels.
●
Use Nitto Kohki’s Wheel Flanges only. However,
do not use any of them which have cracks, chips
or worn. Do not use the alternative
fl
anges or
fl
at
washers.
●
Make sure if the Grinding Wheel is adaptable to
the Wheel Flanges.
Do not use reducing bushing to meet the Wheel
Lock unless they are supplied by the Grinding Wheel
manufacturer.
●
Make sure there are no cracks, distortion or wear
marks on the thread of the Spindle or Wheel
Lock.
The label on the wheel has to be the same or bigger
diameter than that of a Spindle.
●
Make sure if there is any cracks, distortion or
worn on a thread of a Spindle or Wheel Lock.
Do not use the grinder if you ever
fi
nd one.
●
Do not use the side of the Grinding Wheel (except
for speci
fi
c side use Grinding Wheels)
●
Always use the Wheel Guard for the grinder if
the maximum diameter of the Grinding Wheel is
over 50mm.
●
Use the Wheel Guard provided.
Failure to do so could result in injury.
●
Replace damaged, bent or severely worn Wheel
Guard. Do not use any Wheel Guard which can
damage the Grinding Wheel.
●
Air pressure for the grinder must not exceed
0.6MPa (6kgf/cm
2
).
●
Do not start or stop grinders suddenly.
Open a Throttle Lever gradually when you start
operation.
●
After a grinder has been repaired and returned,
check the no load speed with a tachometer
before you use to make sure its actual speed
at 0.6MPa (6kgf/cm
2
) does not exceed the rated
speed printed on the Wheel Guard. Do the same
check after each stage of the work process of
work even in normal use. Set the Adjust Valve to
the maximum speed position when you check
the no load speed.
●
Only qualified/trained operators should attach
or replace Grinding Wheels as well as checking/
testing them.
●
Release the Throttle Lever when air supply is
stopped.
●
Make sure no one is around grinding
circumferences before trial running.
●
Run a trial for a minute before start grinding and
for three minutes after replacement of Grinding
Wheels to make sure there is no problem on the
grinder.
●
Grind slowly until the Grinding Wheels get
warmer in case Wheels seem cold at the start.
●
Always operate the grinder at the correct angle.
(15° 30°) .
(Fig.1)
Grinding Surface
15°
〜
30°
Fig. 1
●
Do not put any inflammable liquid or use
the grinding tool in a potentially explosive
atmosphere as there is a possibility of sparks
when grinding which could cause a fire/
explosion.
