Assembly And Operation; Applications; Prior To Operation - Hitachi Koki GP 3V Manual De Instrucciones

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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.
WARNING:
To avoid the risk of serious injury, NEVER use this
grinder with abrasive wheels, cut-off wheels and/
or saw blades.

PRIOR TO OPERATION

1. Power source
Ensure that the power source to be utilized con-
forms to the power source requirements specified
on the product nameplate.
2. Power switch
Ensure that the switch is in the OFF position. If the
plug is connected to a receptacle while the switch
is in the ON position, the power tool will start
operating immediately and can cause serious injury.
3. Extension cord
When the work area is far away from the power
source, use an extension cord of sufficient thick-
ness and rated capacity. The extension cord should
be kept as short as practicable.
WARNING:
Damaged cord must be replaced or
repaired.
4. Check the receptacle
If the receptacle only loosely accepts the plug, the
receptacle must be repaired. Contact a licensed
electrician to make appropriate repairs.
If such a faulty receptacle is used, it may cause
overheating, resulting in a serious hazard.
GP3V
d
3/16''
D
(5 mm)
1/2''
L
(13 mm)
GP5V
d
3/16''
1/4''
D
(5 mm)
(6 mm)
1/2''
3/4''
L
(13 mm) (20 mm)
10

ASSEMBLY AND OPERATION

1/8'' (3.175 mm)
1/4''
5/16''
(6 mm)
(8 mm)
3/4''
3/4''
(20 mm)
(20 mm)
1/8'' (3.175 mm)
5/16''
3/8''
(8 mm)
(10 mm)
3/4''
3/4''
(20 mm)
(20 mm)
5. Check the work site and surrounding area
Be sure that the work area has been thoroughly
checked and prepared to avoid any unsafe
conditions. Review the SAFETY section of this
manual.
6. Installing a wheel
WARNING:
USING A WRONG SIZED WHEEL OR A WRONG
RATED ROTATION SPEED WHEEL CAN CAUSE
WHEEL BREAKAGE AND RESULTING SERIOUS
INJURY.
In order to avoid this hazard, refer to the following
rated rotation speed wheel and the following
illustration to determine the proper dimensions(s)
of your wheel. Some guidelines:
(a) Use only wheels rated at 29,000/min for GP3V
and 8,300/min for GP5V or more. Using wheel
rated less can lead to wheel disintegration
during operation and cause serious bodily
injury.
(b) Dimension r should always be less than
1/2" (13 mm). Longer lengths can result in
excess vibration, wheel breakage, and the
chance for serious injury.
(c) When dimension d is 1/4" (6.35 mm), the
diameter of the wheel (dimension D) should
be less than 1" (25 mm) for GP3V and less
than 2" (50 mm for GP5V). NEVER use a longer
diameter wheel.
(d) When dimension d is 1/8" (3.175 mm), the
diameter of the wheel (dimension D) should
be less than 3/8" (10 mm) for GP3V and less
than 3/4" (20 mm for GP5V).
(e) Dimension L varies according to the
dimension D. Dimension L can be longer as
dimension D increase. Refer to the following
table:
3/8''
1/2''
(10 mm)
(13 mm)
(16 mm)
3/4''
1-1/2''
(20 mm)
(38 mm)
(25 mm)
1/2''
5/8''
(13 mm)
(16 mm)
1-1/2''
1''
(38 mm)
(25 mm)
(When r =1/2'' (13 mm))
1/4'' (6.35 mm)
5/8''
3/4''
(20 mm)
(25 mm)
1''
1''
(25 mm)
(20 mm)
(When r =1/2'' (13 mm))
1/4'' (6.35 mm)
3/4''
1''
1 - 1/4''
(20 mm)
(25 mm)
(32 mm)
1''
3/4''
1/2''
(25 mm)
(20 mm)
(13 mm)
1''
3/4''
1 - 1/2''
(38 mm)
9/32''
(7 mm)

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