Hitachi Construction Machinery Global

Strengthened undercarriage for higher durability even in heavy-duty applications.

The number of ball bearings in the swing circle, which sustains the upperstructure, is increased to boost the loading capacity of the swing circle by approximately 6 %, allowing stable swing even in tough operation.
(vs. Conventional ZAXIS 480MT / 480MTH)

Upper and lower rollers, idlers and sprockets, used on the ZAXIS 500LC / 520LCH, are larger in diameter than those on the new ZAXIS 450LC / 470LCH. Undercarriage components capable of bearing a 60-ton class excavator are utilized to give sufficient strength and durability. This feature is suitable for worksites when the machine travels frequently.

On the ZAXIS 500LC / 520LCH, distance between tumblers is shortened, compared to that of the new ZAXIS 450LC / 470LCH, to increase traction force by 30 %.
The feature is suitable for frequent hill climbing and traveling on hard ground surfaces.

The master pin of each track link is pressed, instead of master pin using a pin retention to avoid disengagement.

On the H-specification machine, full track guards are provided standard.
Full track guards protect track links and lower rollers from damage and deformation.
Moreover, they also keep out stones, preventing the overload to the undercarriage to reduce wear and damage.

The strength of pins, used in the arm and boom, is increased by 5 %, using harder steel material. (vs. Conventional ZAXIS 480MT / 480MTH)

Bucket teeth are reshaped as Super-V teeth for smooth penetration and higher production. Bushings are utilized at both ends of a bucket pin to eliminate clearances, preventing jerky operation.

The heavy-duty bucket is reshaped, and bucket parts are strengthened to increase durability.