Downloadable brochures and spec sheets for current and non-current models are here.
Interview with Designers of the Mid-Size Excavators
The "Made by HITACHI" global quality standard, produced at the "Mother Design Factory" in Japan.
ZAXIS135US
ENGINE
| Model | Isuzu AJ-4JJ1X |
| Type | 4-cycle water-cooled, direct injection |
| Aspiration | Turbocharged, intercooled |
| No. of cylinders | 4 |
| Rated power ISO 9249, net | 69.0 kW (93.0 HP) at 1 800 min-1 (rpm) |
| Rated power EEC 80/1269, net | 69.0 kW (93.0 HP) at 1 800 min-1 (rpm) |
| Rated power SAE J1349, net | 69.0 kW (93.0 HP) at 1 800 min-1 (rpm) |
| Maximum torque | 372 Nm (38 kgf m) at 1 600 min-1 (rpm) |
| Piston displacement | 2.999 L |
| Bore and stroke | 95.4 mm x 104.9 mm |
| Batteries | 2 x 12 V / 55 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 117 L/min |
| Pilot pump | 1 gear pump |
| Pilot pump Maximum oil flow | 33.6 L/min |
Hydraulic Motors
| Travel | 2 variable displacement axial piston motors |
| Swing | 1 axial piston motor |
Relief Valve Settings
| Implement circuit | 34.3 MPa (350 kgf/cm2) |
| Swing circuit | 32.3 MPa (329 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.
| Implement levers | 2 |
| Travel levers with pedals | 2 |
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 | 13.7 min-1 (rpm) |
| Swing torque | 34.0 kNm (3 470 kgf m) |
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
Tracks
Tractor-type undercarriage. Welded track frame using selected materials. Side frame welded to track frame. Lubricated track rollers, idlers, and sprockets with floating seals. Track shoes with triple grousers made of induction-hardened rolled alloy. Heat-treated connecting pins with dirt seals. Hydraulic (grease) track adjusters with shock-absorbing recoil springs.
Numbers of Rollers and Shoes on Each Side
| Upper rollers | 1 |
| Lower rollers | 7 |
| Track shoes | 44 |
Travel Device
Each track driven by 2-speed axial piston motor through planetary reduction gear for counterrotation of the tracks. Sprockets are replaceable. Parking brake is spring-set/hydraulic-released disc type. Travel shockless relief valve built in travel motor absorbs shocks when stopping travel. Automatic transmission system: High-Low.
| Travel speeds | High : 0 to 5.5 km/h Low : 0 to 3.3 km/h |
| Maximum traction force | 117 kN (11 940 kgf) |
| Gradeability | 70 % (35 degree) continuous |
WEIGHTS AND GROUND PRESSURE
ZX135US-3:
Equipped with 4.60 m boom, 2.52 m arm and 0.50 m3 (SAE, PCSA heaped) bucket.
ZX135US-3 with Blade (Optional):
Equipped with 4.60 m boom, 2.52 m arm and 0.50 m3 (SAE, PCSA heaped) bucket.
ZX135USK-3:
Equipped with 4.60 m boom, 2.52 m K-arm and 0.50 m3 (SAE, PCSA heaped) K-bucket.
| ZX135US-3 | 10 800 kg with 500 mm shoes |
| ZX135USK-3 | 11 800 kg with 500 mm shoes |
| with Blade | |
| ZX135US-3 | 11 700 kg with 500 mm shoes |
SERVICE REFILL CAPACITIES
| Fuel tank | 220.0 L |
| Engine coolant | 16.0 L |
| Engine oil | 17.0 L |
| Swing device | 3.2 L |
| Travel device (each side) | 4.0 L |
| Hydraulic system | 120.0 L |
| Hydraulic oil tank | 62.0 L |
BACKHOE ATTACHMENTS
Boom and arms are of welded, box-section design. 4.60 m boom and 2.10 m, 2.52 m and 3.01 m arms are available.
