hitachi — Intro E ver 2007 11

INTRODUCTION 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. 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. 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. 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.

IN-02 Quantity To Convert From Into Multiply By Quantity To Convert From Into Multiply By Length mm in 0.03937 Pressure MPa kgf/cm2 10.197 mm ft 0.003281 MPa psi 145.0 Volume L US gal 0.2642 Power kW PS 1.360 L US qt 1.057 kW HP 1.341 m3 yd3 1.308 Temperature °C °F °C×1.8+32 Weight kg lb 2.205 Velocity km/h mph 0.6214 Force N kgf 0.10197 min-1 rpm 1.0 N lbf 0.2248 Flow rate L/min US gpm 0.2642 Torque N⋅m kgf⋅m 1.0197 mL/rev cc/rev 1.0 N⋅m lbf⋅ft 0.7375