Hitachi Construction Machinery Asia & Pacific

HITACHI's technology is built on a wealth of experience and know-how from severe job sites around the world. The undercarriage of the ZAXIS 190W has become much stronger. Reinforced frame section featuring improved structure provides greater machine durability, and the integrated transmission with rear axle realizes better performance.

The undercarriage which supports travelling and operation performs an important role in improving ease of operation and durability. ZAXIS-3 series utilizes a new undercarriage frame design. Wider frame width and enhanced 9 % greater vertical strength rate.

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 are 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.)