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ZAXIS190W
ENGINE
| Model | Isuzu AI-4HK1X |
| Type | 4-cycle water-cooled, direct injection |
| Aspiration | Turbocharged, intercooled |
| No. of cylinders | 4 |
| Rated power ISO 9249, net | 122 kW (164 HP) at 2 000 min-1 (rpm) |
| Rated power EEC 80/1269, net | 122 kW (164 HP) at 2 000 min-1 (rpm) |
| Rated power SAE J1349, net | 122 kW (164 HP) at 2 000 min-1 (rpm) |
| Maximum torque | 655 Nm (66.8 kgf m) at 1 500 min-1 (rpm) |
| Piston displacement | 5.193 L |
| Bore and stroke | 115 mm x 125 mm |
| Batteries | 2 x 12 V / 88 Ah |
HYDRAULIC SYSTEM
| Work mode selector | Digging mode / Attachment mode |
| Engine speed sensing system | |
| Main pumps | 2 variable displacement axial piston pumps |
| Main pumps Maximum oil flow | 2 x 189 L / min |
| Pilot pump | 1 gear pump |
| Pilot pump Maximum oil flow | 27.7 L / min |
| Steering pump | 1 gear pump |
| Steering pump Maximum oil flow | 27.7 L / min |
Hydraulic Motors
| Travel | 1 variable displacement axial piston motors |
| Swing | 1 axial piston motor |
Relief Valve Settings
| Implement circuit | 34.3 MPa (350 kgf / cm2 ) |
| Swing circuit | 32.4 MPa (330 kgf / cm2 ) |
| Travel circuit | 34.3 MPa (350 kgf / cm2 ) |
| Pilot circuit | 3.9 MPa (40 kgf / cm2 ) |
Hydraulic Cylinders
High-strength piston rods and tubes. Cylinder cushion mechanisms provided in boom and arm cylinders to absorb shock at stroke ends.
Dimensions
Hydraulic Filters
Hydraulic circuits use high-quality hydraulic filters. A suction filter is incorporated in the suction line, and full-flow filters in the return line and swing/travel motor drain lines.
CONTROLS
Pilot controls. Hitachi's original shockless valve and quick warm-up systems built-in pilot Hydraulic warm-up control systems for engine and hydraulic oil.
| Implement levers | 2 |
| Travel pedal | 1 |
| Outrigger and/or blade lever | 1 |
| Att Pedal | 1 |
UPPERSTRUCTURE
Revolving Frame
Welded sturdy box construction, using heavy-gauge steel plates for ruggedness. D-section frame for resistance to deformation.
Swing Device
Axial piston motor with planetary reduction gear is bathed in oil. Swing circle is single-row, shear-type ball bearing with induction-hardened internal gear. Internal gear and pinion gear are immersed in lubricant. Swing parking brake is spring-set/hydraulic-released disc type.
| Swing speed | 12.2 min-1 (rpm) |
Operator's Cab
Independent spacious cab, 1 005 mm wide by 1 675 mm high, conforming to ISO* Standards. Reinforced glass windows on 4 sides for visibility. Front windows (upper and lower) can be opened. Reclining seat with armrests; adjustable with or without control levers.
* International Standardization Organization
UNDERCARRIAGE
Wheeled type undercarriage. The frame is of welded, stress-relieved structure.
Drive system:
2 speed power shift transmission and variable displacement axial piston type travel motor.
Travel speed (forward and reverse)
| Creeper speed range | 0 to 2.6 km / h |
| Low speed range | 0 to 8.6 km / h |
| High speed range | 0 to 35.0 km / h |
| Gradeability | 67 % (34 degree) |
| Min. turning radius | 6 800 mm |
Axle:
All-wheel drive.
The front axle can be locked hydraulically in any position.
| Oscillating front axle | +7 to -7 degree |
Brakes system:
Maintenance free wet-disc brakes on axle are standard. Fully hydraulic service brake system.
WEIGHTS AND GROUND PRESSURE
ZX190W-3 :
Equipped 2.71 m arm and 0.70 m3 (SAE heaped) bucket.
SERVICE REFILL CAPACITIES
| Fuel tank | 290.0 L |
| Engine coolant | 22.0 L |
| Engine oil | 23.0 L |
| Swing device | 6.9 L |
| Transmission | 2.5 L |
| Front differential gear | 9.5 L |
| Rear differential gear | 14.0 L |
| Hub reduction gear front axle | 2 x 2.5 L |
| Hub reduction gear rear axle | 2 x 2.5 L |
| Hydraulic system | 240 L |
| Hydraulic tank | 100 L |
BACKHOE ATTACHMENTS
Boom and arms are of welded, box-section design. 2.26 m, 2.71 m and 3.21 m arms are available.
Bucket is of all-welded,high-strength steel structure.
BUCKETS
