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 12 %, allowing stable swing even in tough operation.
(vs. Conventional Model)

Upper and lower rollers are widened to increase contact areas, and idlers and sprockets are increased in diameter for more durability and mobility.

The boss diameter of each track link is increased by approximately 10 %.
The thickness of each track link is also increased by approximately 65 %.
Thickened track links extend service life.
(vs. Conventional Model)

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

The bearing length of the idler pedestal is extended by approximately 54 % to increase durability and service life. (vs. Conventional Model)

The idler bracket is thickened for rigidity to prevent deformation and increase durability.

The upper roller bracket wall thickness is increased for higher strength.

On the H-specification machines, 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.

Pins, used throughout the front attachment, are increased in diameter for strengthening.

The arm and boom are strengthened by thickening and using stronger material.

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

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.