Hitachi Construction Machinery Australia

Hitachi AC drive technology, developed in conjunction with Siemens, provides superior performance with higher top speeds, better gradeability and stronger retardation.
These features increase productivity and availability, and reduce operating and maintenance cost.
Lower maintenance costs are achieved with use of brushless motors and elimination of contactors. The Siemens AC motors do not have commutators, reducing costs and allowing the truck to achieve higher speeds. Less downtime and higher speeds result in more production and lower cost per tonne.
Siemens AC drive systems power not only rigid haul trucks, but also electric rope shovels, train locomotives and draglines.

Hitachi AC drive systems are virtually maintenance-free and provide higher top speeds and more rimpull than a comparable DC system. Full retarding capability means the truck can be fully stopped without applying the service brakes.

Hitachi's Double Path Epicyclic Planetary Design provides high efficiency and easy maintenance. Allowing the 1st (outer) planetary carrier to travel at wheel speed provides lower operating temperatures - longer lubricant life, better component life. Increased 2nd (inner) planetary gears, from 3 to 4, produce higher reliability.

Grid box located lower position provides better right hand visibility. Control unit with higher efficient liquid cooling system makes the size compact, therefore provides better visibility.