Prior To Operation - Hitachi LDU 4 Handling Instructions Manual

○ Mounted wheels with 3 mm shaft
All mounted wheels are provided with WA grain, 80
grounding, and P bonding and are suitable for grinding
general and special steel materials.
Purchase and utilize mounted wheels of suitable shape
for processing.
KA-20 KA-21 KA-22
KC-20 KC-21
○ Universal mount
This universal mount is used when grinding inner
surfaces of workpieces or fi nishing specially shaped
workpieces, by installing the hand grinder on a lathe.
The universal mount is installed on the cross slide after
removing the lathe tool post.
(using universal mount)
(dimensional diagram)
KA-23 KA-24
KC-22 KC-23 KC-24
Optional accessories are subject to change without notice.
APPLICATIONS
○ Finishing of dies for press working, die casting and
moulding.
○ Finishing of thread cutting dies, tools and other small
parts.
○ Internal grinding of tools and machine parts.

PRIOR TO OPERATION

1. Power source
Ensure that the power source to be utilized conforms
to the power requirements specifi ed on the product
nameplate.
2. Grounding
This tool should be grounded while in use to protect the
operator from electric shock. The tool is equipped with
a three conductor cord and grounding type plug to fi t the
proper grounding type receptacle. The green (or green
and yellow) conductor in the cord is the grounding wire.
Never connect the green (or green and yellow) wire to a
live terminal.
3. Power switch
Ensure that the power switch is in the OFF position. If
the plug is connected to a receptacle while the power
switch is in the ON position, the power tool will start
operating immediately, which could cause a serious
accident.
4. Extension cord
When the work area is removed from the power source,
use an extension cord of suffi cient thickness and rated
capacity. The extension cord should be kept as short as
practicable.
5. Confi rming condition of the environment
Confi rm that the work site is placed under appropriate
conditions conforming to prescribed precautions.
When grinding a thin steel plate, depending upon the
state of the workbench, a loud noise will be created due
to resounding noise from the steel plate being ground.
To eliminate unwanted noise in this instance, place a
rubber mat beneath the material to be ground.
6. Installing a mounted wheel
● Always use a mounted wheel whose outer diameter
is 32 mm or less. When using a mounted wheel in
excess of this diameter, mounted wheel circumferential
speed will exceed the safety limit, perhaps causing an
accident.
Never use a mounted wheel in excess of 32 mm
diameter.
● Mounted wheels can be simply attached and detached
by using two wrenches. (Refer to Fig. 1).
● Install a mounted wheel so that the mounted wheel
shaft does not protrude more than 15 mm.
NOTE
1. Do not tighten the collet chuck by inserting a shaft
thinner than the regular shaft diameter (6 mm) in
the chuck or in an empty condition. This practice will
damage the collet chuck.
2. When installing a mounted wheel with shaft, tighten the
collet chuck after applying a small quantity of spindle oil
(or sewing machine oil) to the tapered portion indicated
in Fig. 2.
English
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