Hitachi ZW180, Technical Manual

Page: 4 / 374

INTRODUCTION
IN-02
SAFETY ALERT SYMBOL AND HEADLINE
NOTATIONS
In this manual, the following safety alert symbol and
signal words are used to alert the reader to the
potential for personal injury of machine damage.
This is the safety alert symbol. When you see this
symbol, be alert to the potential for personal injury.
Never fail to follow the safety instructions prescribed
along with the safety alert symbol.
The safety alert symbol is also used to draw attention
to component/part weights.
To avoid injury and damage, be sure to use appropri-
ate lifting techniques and equipment when lifting heavy
parts.
•
CAUTION:
Indicated potentially hazardous situation which could,
if not avoided, result in personal injury or death.
•
IMPORTANT:
Indicates a situation which, if not conformed to the
instructions, could result in damage to the machine.
•
NOTE:
Indicates supplementary technical information or
know-how.
UNITS USED
•
SI Units (International System of Units) are used in
this manual.
MKSA system units and English units are also
indicated in parenthheses just behind SI units.
Example : 24.5 MPa (250 kgf/cm
2
, 3560 psi)
A table for conversion from SI units to other system
units is shown below for reference purposees.
Quantity
To Convert
From
Into Multiply By
MPa kgf/cm
2
10.197 Pressure
MPa psi 145.0
kW PS 1.360 Power
kW HP 1.341
Temperature
°
C
°
F
°
C
×
1.8+32
km/h mph 0.6214 Velocity
min
-1
rpm 1.0
Flow rate L/min US gpm 0.2642
mL/rev cc/rev 1.0
Quantity
To Convert
From
Into Multiply By
mm in 0.03937 Length
mm ft 0.003281
L US gal 0.2642
L US qt 1.057
Volume
m
3
yd
3
1.308
Weight kg lb 2.205
N kgf 0.10197 Force
N lbf 0.2248
N
⋅
m kgf
⋅
m 1.0197 Torque
N
⋅
m lbf
⋅
ft 0.7375