HITACHI CONSTRUCTION MACHINERY

HITACHI's technology is built on a wealth of experience and know-how from limestone sites and quarries around the world. The undercarriage of the ZAXIS 180LC-3 has become much stronger. Improved construction and enlarged box sections, a undercover plate that protects the center joint and hydraulic hoses make this machine more durable.

Strengthened undercarriage

Upper rollers and upper roller brackets are increased in size for higher durability.
Track links are thickened and reshaped for higher durability and rigidity.

Strengthened X beam and side frames

The X-beam is strengthened by the improved construction and enlarged box sections. The section is increased in strength up to 35 % (maximum). Top and bottom plates of the X-beam use monolithic plates, instead of conventional welded four plates. This eliminates welding to strengthen the X-beam.

Improved idler brackets

The idler bracket reinforcing plate is thickened greatly for higher durability to prevent the opening of the idler bracket. The track link disengagement preventive plate, located immediately behind the idle bracket, extends its top to prevent track link disengagement and increase durability.

Strengthened front attachment

The boom top bracket is strengthened by using high-tensile steel. At arm-bucket joint, the arm top is hardened with WC thermal spraying (Tungsten-
Carbide) for greater wear resistance at its contact surface with bucket, reducing
jerking.

Reinforced resin thrust plates designed to reduce noise and resist wear.
The new HN bushings, containing "solid molybdenum-based lubricant", are
utilized at the boom-arm joint and arm cylinder mounting area for better lubrication
and higher durability. (At other joints, conventional HN bushings are also utilized.)

The boom foot is enlarged for higher strength. This improvement increases the
durability and reliability under heavy-duty operation.

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