Hitachi Construction Machinery Asia & Pacific

Hitachi's ETS (Electronic Total control System) can achieve maximum job efficiency by reducing fuel consumption and noise levels, while maximizing productivity through the optimization of engine-pump functions with excellent controllability increasing operator comfort.

Boom/arm/bucket

High-strength piston rods and tubes adopted. Cylinder cushion mechanisms are provided for boom, arm bucket and dump (for loading shovel) cylinders. Bucket cylinder of loading shovel is provided with protector.

All hydraulic circuits have high-quality hydraulic filters for protection against oil contamination and longer life of hydraulic components.

Wrist control type electric lever. Right lever is for boom and bucket control, left lever for swing and arm control. 2 pedals provided for opening/closing the bottom dump bucket.

Remote-controlled hydraulic servo system. Independent drive at each track allows counter rotation of tracks.

A deep, full-reinforced box section. Heavy-gauge steel plates used for ruggedness.

Maintenance accessibility is the major feature in the lay-out of deck machinery. Sidewalks provides easy access to engines, hydraulic and electrical components. ISO-meet stairs and handrails. Sidewalks and stairs are provided with skid-resistant plates.

2 high-torque, axial-piston motors with two-stage planetary gear run in oil. Diametrically-opposed,well-balanced arrangement of 2 swing devices. Swing circle with dirt seals is a heavy-duty, single-row, sheertype ball bearing. Induction-hardened internal swing circle gear and pinion immersed in lubricant. Parking brake of spring-set/hydraulicreleased disc type. This parking brake is manually releasable.

The sturdy cab, with the top guard conforming to OPG Level ll (ISO), helps protect the operator from falling objects. Independent, pressurized, 1 800 mm wide, 2 150 mm high, roomy 7.5m³ cab with tinted-glass windows features all-round visibility. Air-suspension type, fully adjustable reclining seat with armrests; movable with or without front & swing control levers by slide. Instrument and control panel are built in cab wall is in easy range of the operator. 3 air conditioner system.

Tractor-type undercarriage. Dual-flanged-type bolt linkage for side frame and X-form center frame assures durability. Heavy-duty track frame of all-welded, stress-relieved structure. Top-grade materials used for toughness. Lifetime-lubricated induction-hardened track rollers, idlers and sprockets with floating seals. Track shoes of durable box-type cast steel with triple grousers. Durable strut-reinforced track links with track guards. Hydraulic track adjuster provided with N2 gas accumulator with relief valve. Track adjuster provided with protection device against abnormal tension. Travel motion alarm device.

Triple grouser track shoes of induction-hardened cast steel.

Each track driven by high-torque, axial piston motors, allowing counter rotation of tracks. 2-stage planetary gear plus spur gears reduction device. Parking brake of spring-set/hydraulic-released disc type. This parking brake is manually releasable.

Equipped with 11.0 m³ (PCSA heaped) bottom dump bucket

Equipped with 8.3 m boom, 3.6 m and 12.0 m³ ( PCSA heaped) bucket

Boom and arm are of all-welded, low-stress, high-tensile strength steel fullbox section design. Efficient, automatic level crowding achieved by onelever control because parallel link mechanism keeps the bucket digging angle constant, and level cylinder circuit maintains the bucket height constant (Auto-Leveling Crowd Mechanism).

Boom and arm are of all-welded, low-stress, full-box section design. Bucket of all-welded, high-strength steel structure. Bucket/arm joint pins are floating type. Replaceable thrust plates are provided with bucket/arm joint part. Autolubrication system for all pins is standard.