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Hitachi
Zaxis 120
Zaxis
blends the latest in information and heavy equipment technologies to
provide the performance and operating efficiency for lower total cost.
Zaxis is ready to meet the challenges and the changes facing the
construction industry of today and tomorrow.
Engine
The Isuzu 4 cylinder, 88 HP water-cooled direct injection engine is
turbocharged and intercooled. The engine conforms to U.S. EPA Tier 2
emissions regulations. A
low-noise muffler and other steps have been taken to reduce the amount
of noise released from the engine compartment.
Operating Weight............................... 27,000 lbs
Bucket Capacity.......................0.34 - 1.06 yards
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ENGINE
Model ..................................................Isuzu CC-4BG1TC
Type .........................4-cycle water-cooled, direct injection
Aspiration ................................Turbocharged, intercooled
No. of cylinders
..........4 Rated power
SAE J1349, net
H/P mode ...................88 hp (65 kW) @ 2,150 rpm (min-1)
P mode ......................84 hp (62 kW) @ 1,950 rpm (min-1)
Maximum torque ................253 lbf•ft @ 1,600 rpm (min-1)
Piston displacement ................................264 in3 (4.329 L)
Bore and stroke ............4.13” x 4.92” (105 mm x 125 mm)
Batteries ................................................2 x 12 V, 55 AH
Governor ......Mechanical speed control with stepping motor
HYDRAULIC SYSTEM
Work mode selector allows operator to choose between Digging mode or
Attachment mode. Engine speed sensing system.
Main pumps ................2 variable displacement axial piston pumps
Max. oil flow ....2 x 27.7 US gpm (2 x 105 L/min, 2 x 23.1 lmp gpm)
Pilot pump ...................................................1 gear pump
Max. oil flow ..........................8.7 US gpm (33 L/min, 7.3 lmp gpm)
Hydraulic Motors
Travel .............2 variable displacement axial piston motors
Swing ...............................................1 axial piston motor
Relief Valve Settings
Implement circuit .........................4,980 psi (350 kgf/cm2)
Swing circuit ................................4,690 psi (330 kgf/cm2)
Travel circuit ...............................4,980 psi (350 kgf/cm2)
Pilot circuit .......................................570 psi (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.
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CONTROLS
Pilot Controls
Hitachi’s original shockless
valve and quick warm-up system built in the pilot circuit. Hydraulic
warm-up control system for engine and hydraulic oil.
Implement
levers..........................................................2
Travel levers with pedals
...............................................2
UNDERCARRIAGE
Tracks
Tractor-type undercarriage.
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. Number of Rollers and Shoes on Each Side, standard N.A. model
Upper rollers
................................................................1
Lower rollers
................................................................7
Track shoes
................................................................44
Traction Device
Each track driven by 2-speed
axial piston motor through planetary reduction gear for counter-rotation
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:..........................0-3.4 mph (5.5 km/h)
Low: ..............................................0-2.1 mph (3.4 km/h)
Maximum traction force ..................22,900 lbf (10 400 kgf)
Gradeability
....................................35° (70%) continuous
Specification Chart "B"
Below
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