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Hitachi Ex1205 Manual

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    							HITACHI
    V
    SUPER
    -
    Rated Engine HP  
    81 hp (60 kW)
    Max Power: 88 hp (66 kW)
    Operating WeightEX120: 26,700 lbs
    (12 100 kg)Bucket Capacity0.25 – 0.85 yd
    3
    (0.19 – 0.66 m
    3) 
    						
    							3
    Putting Technology To Work
    Features Specifics
    You’ll like the powerful Hitachi EX120. It is fast, extremely powerful for 
    its size, and very responsive. The EX120 features the most advanced
    computerized horsepower and control system available: Hitachi’s
    exclusive 
    Dash-5
    system. This system is renowned for its smooth multi-
    function control. The proven Isuzu engine is perfectly matched to the
    hydraulic system for years of reliable and yet outstanding performance.
    • Isuzu A-4BG1T turbocharged, direct injection diesel
    engine is extremely fuel-efficient and reliable. It meets
    all EPA clean air requirements.
    • Dash-5
    engine/hydraulic control with three power
    modes and four work modes.
    • Power modes:
    1. Normal:
    Standard operation
    2. 
    H/P:
    Increased engine rpm and horsepower
    3. 
    E:
    Maximum fuel efficiency in light duty 
    applications
    • Work modes:
    1. General Purpose
    2. Grading Mode
    3. Precision Mode
    4. Attachment Mode
    • Cab mounted on six fluid-filled, vibration dampening,
    shock absorbing mounts.
    • Compact travel motor design; protected piping reduces
    opportunity of damage.
    • The updated work modes provide power in the order
    of inherent priority to do the best job for the project
    at hand. The Hitachi EX120 has excellent multi-
    function features which allow multiple jobs such as
    travel, swing and boom raise all at the same time
    without any one function stopping.
    • The Super EX120, as with all Hitachi excavator
    models, is built to maximize performance, reliability,
    and operator comfort through optimum design and
    quality components. The Isuzu engine is matched to
    the hydraulic pumps for outstanding multiple
    function performance. The undercarriage, carbody,
    and front attachment are all balanced and designed
    for maximum strength. All of this means that your
    Hitachi EX120 will work economically and
    productively for years and for thousands of hours at
    minimum operating costs.
    1. Low noise design eliminates
    high-pitch noise inside the cab.
    2. Easy-maintenance HN
    bushings which are made of
    sintered composite iron alloy
    with high-viscosity lubricating
    oil.
    3. Fresh-air type, large-capacity
    air conditioner standard.
    4. Auto-lubrication system for
    ensured lubrication of boom
    and arm pins optionally
    available.
    5. Hitachi’s original shockless
    valve and quick warm-up
    control system for engine and
    hydraulic oil means highly
    responsive controls
    immediately after start-up.
    6. Round hydraulic tank provides
    superior circulation of the
    hydraulic oil so that it’s kept
    cleaner and cooler.
    7. A rugged X-form center frame
    assures superb durability.
    8. Super-strong hydraulic oil
    piping and hoses provide
    outstanding reliability and
    extremely clean machines.
    9. All Hitachi excavators feature
    heavy-duty booms and arms
    reinforced with bulkheads for
    extra long life.
    V
    SUPER
    -
    Operating Travel Max. Lift Traction
    Model Weight Speeds Capacity Gradeability Force
    EX120 26,700 lbs 0 - 3.4 mph 14,290 lbs    35°22,000 lbf
    (12 100 kg) (0 - 5.5 km/h) (6 480 kg) (70%) (10 000 kgf) 
    						
    							5
    Powertrain: Efficient, Powerful
    Economical Isuzu 81 hp Engine
    Is Dependable, Long-LastingThe Isuzu A-4BG1T engine is one of the most widely used, most
    proven and most dependable engines in the world. In the EX120,
    it is turbocharged. The 4-cylinder diesel features direct injection, 
    a maximum torque of 231 lbf
    •ft (32 kgf
    •m), and a mechanical
    governor. It meets all EPA and CARB regulations for noise and
    pollution.
    Enhanced E-P Pump ControlA sophisticated micro-computer system guided by multiple actuators
    is standard on the EX120. Hitachi is renowned for the smooth
    operation of its excavators and this model is no exception. The newDash-5 
    controls provide quick, accurate response to multi-function
    swing-lift-bucket curl and travel operations.
    Enhanced Cooling ProtectionThe EX120 features a 4.9 U.S. gallon (18.4 liters) radiator coolant
    tank, a tightly fitting fan shroud and a high capacity fan. The
    radiator fins can easily be cleaned without tools and the coolant
    level can be checked from the ground during normal inspection.Outstanding
    Traction ForceThe traction force is an impressive 22,000 lbf (10,000 kgf) for
    excellent maneuvering through mud and over obstacles.
    New E-P Control System
    Work ModesWork 
    ModesPower
    Modes H/P&E
    Auto Idle
    Engine
    EC Motor
    Pump Solenoid
    Valve
    Pressure
    Switch
    Electric System
    Hydraulic Pilot SystemWork Mode
    Select Switch
    Dual-Type Fuel Control
    Power Mode
    Select Switch H/P & E
    Auto Idle Switch
    Operator Comfort:
    The cab floats on six fluid-
    filled elastic mounts that
    smooth out shocks and jolts.
    Model Features: EX120
    The hand control levers can be raised or lowered
    to match the operator’s build, and the controls
    can either glide forward or back with the seat or
    remain fixed while the seat moves.The work modes, power modes, air conditioning
    controls, and dial-type engine speed control are
    all located beside the operator.
    A Top Priority
    AM-FM
    Radio4
    Work Modes For 
    Increased PerformanceThe four work modes have been enhanced from prior models.   
    The General Purpose Mode is appropriate for general digging and truck load-
    ing. All circuits work together.
    ➁  
    The Grading Mode provides priority to the combined operation of boom raise,
    stick forward and bucket adjustment while limiting control response so that the
    movement is smooth.
    ➂  
    The Precision Mode keeps the front attachment moving precisely and slowly.
    ➃  
    The Attachment Mode is designed to automatically match the oil flow require-
    ments of selected attachments such as a hydraulic hammer. Additional piping is
    required (optional).
    H/P and E Modes For 
    Increased Efficiency• The 
    Normal 
    mode is for normal or average applications. The engine runs
    at an efficient maximum speed for longest life and general economy. 
    The hydraulic pump runs at a baseline 100%.
    • The 
    H/P 
    mode provides the full power of the EX120 on command. 
    This function increases engine rpm by 6% when activated, thus providing 
    5% more horsepower when needed.
    – Engine rpm automatically increases when the arm-in function 
    meets resistance.
    – Automatically switches back to normal rpm when resistance 
    is overcome for fuel savings.
    • The 
    E mode provides 94% of full power while providing 15% more fuel 
    efficiency. It is appropriate for light-duty work because it allows you to 
    work longer before refueling.
    4321
    Sitting in one place, all day, operating a machine productively takes 
    concentration and dedication to doing a good job. It also means that a smart
    owner is going to do everything possible to make sure his operator is
    comfortable in the cab. The Hitachi EX120 is an excellent example of how
    comfortable a well-designed cab can be. 
    The widest cab in its class: 3 ft. 4 in. (1 005 mm). Lots of leg room, wide side
    door.  The ergonomically-designed seat is fully adjustable with tilting armrests,
    tilting back, floating or solidly fixed seat, headrest tilt, and seat raise/lower.  
    						
    							Specifications: EX120 
    7 6
    Engine
    Model ................................................................................... Isuzu A-4BG1T
    Type ................................................ 4-cycle water-cooled, direct injection
    Aspiration ....................................................................................Turbocharged
    No. of cylinders .............................................................................................. 4
    Rated flywheel horsepower
    (DIN 6271, net) .................................... 85 PS (63 kW) at 2,100 rpm (min
    -1)
    Rated flywheel horsepower 
    (SAE J1349, net) .................................. 81 hp (60 kW) at 2,100 rpm (min-1)
    Maximum torque ............................................................. 231 lbf
    •ft (32 kgf
    •m)
    at 1,600 rpm (min-1)
    Piston displacement .............................................................. 264 in
    3(4.329 L)
    Bore and stroke ........................................ 4.13” x 4.92” (105 mm x 125 mm)
    Batteries .................................................................................. 2 x 12 V, 65 AH
    Governor ............................................................... Mechanical, speed control 
    with stepping motor
    Hydraulic System
    •Work mode selector:  General purpose mode / Grading mode / 
    Precision mode / Attachment mode
    Main pumps ............................. 2 variable displacement axial piston pumps
    Maximum oil flow .................... 2 x 25.1 US gpm
    (95 L/min, 20.9 Imp gpm)
    Pilot pump ................................ 1 gear pump
    Maximum oil flow .................... 9.3 US gpm
    (35.3 L/min, 7.8 Imp gpm)Hydraulic MotorsTravel ........................................ 2 variable displacement axial piston motors
    Swing ........................................ 1 axial piston motorRelief Valve  SettingsImplement circuit ..................... 4,980 psi  (350 kgf/cm
    2)
    Swing circuit ............................ 4,550 psi  (320 kgf/cm2)
    Travel circuit ............................. 4,980 psi  (350 kgf/cm2)
    Pilot circuit ............................... 540 psi    (38 kgf/cm2)
    Hydraulic CylindersHigh-strength piston rods and tubes.  Cylinder cushion mechanisms are 
    provided in all cylinders to absorb shock when pistons reach their stroke ends.Dimensions
    Qty Bore Rod diameter
    Boom
    2 4.13” (105 mm) 2.76” (70 mm)
    Arm
    1 4.33” (110 mm) 3.15” (80 mm)
    Bucket
    1 3.74” (95 mm) 2.56” (65 mm)
    Hydraulic FiltersHydraulic circuits use high quality hydraulic filters.  A suction filter is incorpo-
    rated in the suction line, and 10 micron 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 system
    built in the pilot circuit.  Hydraulic warm-up control system for engine and
    hydraulic oil.
    Implement levers .......................................... 2
    Travel levers with pedals............................... 2
    Upperstructure
    Revolving FrameWelded sturdy box construction, using heavy-gauge steel plates for ruggedness.
    D-section frame for resistance to deformation.  Swing MechanismAxial 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 ........................................................................... 12.7 rpm (min
    -1)
    Operator’s CabIndependent roomy cab, 40” (1 005 mm) wide by 66” (1 665 mm) high, con-
    forming to ISO* Standards.  Reinforced glass windows on 4 sides for excellent
    visibility.  Front windows (upper and lower) can be opened.  Adjustable, reclin-
    ing seat with armrests; movable with or without control levers. * International Standardization Organization
    Undercarriage
    Tra c k sTractor-type undercarriage.  Welded track frame using carefully 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.  Flat and triangular shoes are also available.
    Heat-treated connecting pins with dirt seals.  Hydraulic (grease) track adjusters
    with shock-absorbing recoil springs.Numbers of Rollers and Shoes on Each SideUpper rollers ............................... 1 Track shoes ........................................ 44
    Lower rollers................................ 7Traction DeviceEach 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, ensuring smooth
    stops.
    Automatic transmission system:  High - Low
    Travel speeds ...........................................High:  0 to 3.4 mph (5.5 km/h)
    Low:  0 to 2.0 mph (3.2 km/h)
    Maximum traction force ......................................22,000 lbf (10 000 kgf)
    These specifications are subject to change without notice.
    Illustrations and photos show the standard models, and may or
    may not include optional equipment, accessories, and all standard
    equipment with some differences in color and features.
    Perfectly Matched 
    Hydraulic SystemHitachi expertly matches the engine to the hydraulic
    pumps and control valves for the best response and longest
    life possible. The pumps are designed to work specifically
    with the Isuzu engine – regardless of rpm or work load.
    Super Strong
    PipingHitachi is legendary for its strong,
    long-lasting hydraulic hose, piping
    and fittings. This provides outstanding
    reliability and cleanliness.
    Longer-Life UndercarriageHitachi undercarriages feature premium grade tracks
    with large track links fitted with struts for added dura-
    bility. Pin seals prevent dirt in the bushings and reduce
    inner wear. The tracks feature heavy-duty track links,
    front idlers, upper/lower rollers, and track center guard.
    Air Cleaner
    Stored InsideRemote
    Lube
    Round Hydraulic
    Tank
    A round hydraulic tank provides
    superior circulation of the hydraulic
    oil so that it’s kept cleaner and
    more evenly cooled.
    Rugged 
    X-FrameThe tough tractor-type
    undercarriage and X-form
    center frame assure
    superb durability.Round Travel
    Motor CoversRound travel motor covers
    provide a higher resistance
    to deformation.
    Premium
    Quality DesignHitachi Construction
    Machinery invests over $75
    million a year in research and
    development to build ever-
    better hydraulic excavators.
    That research shows itself over and over in the new
    Dash-5
    EX120. It has an excellent cab that is comfortable. The under-
    carriage is extremely rugged, and the boom and arm are
    designed for years of use.
    Long-Life, High-Hour Durability 
    Weights and Ground Pressure
    Equipped with 15’1” (4.60 m) boom, 8’ 3” (2.52 m) arm and 0.72 yd
    3
    (0.55 m
    3: PCSA heaped) H-type bucket.
    Shoe type Shoe width Operating weight Ground pressure
    20”26,000 lb 5.40 psi (0.38 kgf/cm
    2)
    (500 mm) (11 800 kg)
    Triple 24”26,700 lb 4.55 psi (0.32 kgf/cm
    2) 
    grouser (600 mm) (12 100 kg)
    28”27,100 lb 3.98 psi (0.28 kgf/cm
    2) 
    (700 mm) (12 300 kg)
    ___
    Flat20”27,100 lb 5.55 psi (0.39 kgf/cm
    2) 
    (510 mm) (12 300 kg)
    Triangular28”26,700 lb 3.98 psi (0.28 kgf/cm
    2) 
    (700 mm) (12 100 kg)
    Weight of the basic machine [including 4,960 lb (2 250 kg) counterweight and triple
    grouser shoes, but excluding front-end attac
    hment, fuel, h
    ydraulic oil, engine oil, and
    coolant etc.
    ] is:
    EX120 ..................................................20,500 lb (9 300 kg) with 20” (500 mm) shoes 
    						
    							Backhoe Attachments
    Boom and arms are of welded, box-section design. 
    Boom length: 15’ 1” (4.60 m)
    Arms available in lengths: 6’11” (2.10 m)
    8’ 3” (2.52 m)
    9’11” (3.01 m)
    Bucket is of welded steel structure. Side clearance adjustment 
    mechanism provided on the bucket joint bracket.
    Capacity Width
    Without With No. 
    PCSA CECE side side of Weight
    heaped heaped cutters cutters teeth
    0.25 yd
    3(0.19 m
    3) 0.17 m
    3
    18” (450 mm) 22”(550 mm) 3 530 lb  (240 kg)
    0.39 yd
    3(0.30 m
    3) 0.25 m
    3
    23” (580 mm) 28” (700 mm) 3 620 lb (280 kg)
    0.52 yd
    3 (0.40 m
    3) 0.33 m
    3
    27” (680 mm) 31” (800 mm) 4 730 lb (330 kg)
    0.60 yd
    3 (0.46 m
    3) 0.40 m
    3
    33” (850 mm) 38” (970 mm) 5 840 lb (380 kg)
    0.72 yd
    3 (0.55 m
    3) 0.45 m
    3
    35” (890 mm) 40” (1 010 mm) 5 880 lb  (400 kg)
    0.77 yd
    3 (0.59 m
    3) 0.50 m
    3
    37” (950 mm) 42” (1 070 mm) 5 900 lb  (410 kg)
    0.86 yd
    3 (0.66 m
    3) 0.55 m
    3
    41” (1 030 mm) - 5 900 lb  (410 kg)
    *10.72 yd
    3 (0.55 m
    3) 0.45 m
    3
    35” (890 mm) 40” (1 010 mm) 5 1,010 lb  (460 kg)      
    *20.72 yd
    3 (0.55 m
    3) 0.45 m
    3
    35” (890 mm) 40” (1 010 mm) 5 1,080 lb  (490 kg)
    *30.72 yd
    3 (0.55 m
    3) 0.45 m
    3 
    35” (890 mm) 40” (1 010 mm) 5 1,040 lb  (470 kg)
    *10.77 yd
    3(0.59 m
    3) 0.50 m
    3
    37” (950 mm) 42” (1 070 mm) 5 1,060 lb  (480 kg)
    V-Type bucket: 0.46 yd
    3(0.35 m
    3: CECE heaped)  3 820 lb  (370 kg)
    One point ripper   1 710 lb (320 kg)      Clamshell bucket: 0.39 yd
    3(0.30 m
    3: CECE heaped), Width 22” (560 mm) 6 1,520 lb  (690 kg)  
    Slope-finishing blade: Width-39” (1 000 mm), Length-63” (1 600 mm)  950 lb (430 kg)   * With 28” (700 mm) shoes only     
    *1Reinforced bucket     
    *2Level-pin-reinforced bucket     
    *3H-bucket
    Recommendation
    EX120
    6’ 11” 8’ 3” 9’ 11”
    (2.10 m) (2.52 m) (3.01 m)
    arm arm arm
     
    
    
     
    
    
     
    
    
     
    ✦
    ✦
     
    ✦
    ✦
    *
     ✦
    ✦
    -
     
    --
     
    ✦
    ✦
    *
     
    ✦
    ✦
    *
     
    ✦
    ✦
    *
     ✦
    ✦
    -
    ✦ ✦✦
    ✦✦
    ✦
    ✤ ✤✤
    ✤
    -
     
    
    -
    ✧ ✧✧
    ✧✧
    ✧
    Specifications: EX120 
    8
    Service Refill Capacities
    US gal Liters Imp gal
    Fuel tank 66.1 250.0 55.0
    Engine coolant 4.9 18.4 4.0
    Engine oil 4.3 16.2 3.6
    Swing mechanism 0.8 3.2 0.7
    Travel final drive device 0.9 3.5 0.8
    (each side)
    Hydraulic system 35.4 134.0 29.5
    Hydraulic tank 18.2 69.0 15.2Buckets
     
    Suitable for materials with density 
    of 3,370 lb/yd
    3(2 000 kg/m
    3) or less
    ✦ ✦
    Suitable for materials with density 
    of 2,700 lb/yd
    3(1 600 kg/m
    3) or less
     
    Suitable for materials with density 
    of 1,850 lb/yd
    3(1 100 kg/m
    3) or less
    ✤ ✤
    Heavy-duty service
    ✧ ✧
    Slope finishing service-Not recommended
    Reinforced Front AttachmentBulkheads are provided inside the front
    attachment to resist torsion and thickened
    plates are used in areas subject to stress
    concentration for added durability in tough
    operations.
    Material (loose weight)                                       General-Purpose Bucket* Heavy-Duty Bucket*
    3,400 - 3,100 lb/yd
    3(2 020 - 1 840 kg/m
    3)
    Sand and gravel, wet 0.63 yd
    3
    0.5 m
    3
    0.50 yd
    3
    0.4 m
    3
    Sand, wet 0.63 yd
    3
    0.5 m
    3
    0.50 yd
    3
    0.4 m
    3
    2,900 - 2,550 lb/yd
    3(1 720 - 1 510 kg/m
    3)
    Sand and gravel, dry 0.75 yd
    3
    0.6 m
    3
    0.63 yd
    3
    0.5 m
    3
    Sand, moist 0.75 yd
    3
    0.6 m
    3
    0.63 yd
    3
    0.5 m
    3
    Rock, granite, blasted and broken 0.63-0.88 yd
    3
    0.5-0.7 m
    3
    0.50-0.75 yd
    3
    0.4-0.6 m
    3
    Clay, wet 0.75 yd
    3
    0.6 m
    3
    0.63 yd
    3
    0.5 m
    3
    Earth, wet 0.75 yd
    3
    0.6 m
    3
    0.63 yd
    3
    0.5 m
    3
    Limestone, broken or crushed 0.50-0.75 yd
    3
    0.4-0.6 m
    3
    0.50-0.63 yd
    3
    0.4-0.5 m
    3
    Earth, dry 0.63-0.75 yd
    3
    0.5-0.6 m
    3
    0.63 yd
    3
    0.5 m
    3
    2,500 - 2,100 lb/yd
    3(1 480 - 1 250 kg/m
    3)
    Clay, dry 0.63-0.88 yd
    3
    0.5-0.7 m
    3
    0.75 yd
    3
    0.6 m
    3
    Sand, dry 0.88 yd
    3
    0.7 m
    3
    0.75 yd
    3
    0.6 m
    3
    Shale 0.88 yd
    3
    0.7 m
    3
    0.75 yd
    3
    0.6 m
    3
    Earth, loam 0.88 yd
    3
    0.7 m
    3
    0.75 yd
    3
    0.6 m
    3
    Caliche 0.63-0.88 yd
    3
    0.5-0.7 m
    3
    0.50-0.75 yd
    3
    0.4-0.6 m
    3
    1,780 - 1,170 lb/yd
    3(1 050 - 690 kg/m
    3)
    Coal 1.25 yd
    3
    1.0 m
    3
    --
    Topsoil 1.38 yd
    3
    1.1 m
    3
    --
    Peat, wet 1.75 yd
    3
    1.3 m
    3
    --
    950 - 700 lb/yd
    3(560 - 420 kg/m
    3)
    Cinders 2.00 yd
    3
    1.5 m
    3
    --
    Peat, dry 2.75 yd
    3
    2.1 m
    3
    --
    Wood chips 3.25 yd
    3
    2.5 m
    3
    --
    * Contact your Hitachi dealer for optimum, bucket and attachment selections. These recommendations are for general conditions and average use.
    Larger buckets may be possible for flat and level operations, less compacted materials, and volume loading applications such as mass excavation
    applications in ideal conditions. Smaller buckets are recommended for adverse conditions such as off-level applications and uneven surfaces.Bucket Selection Chart
    Bucket capacity indicated is SAE heaped.
    9
    Dimensions
    BACKHOEEX120
    Working Ranges➤➤➤
    ➤
    EX120
    A Distance between tumblers 9’5”  (2 880 mm)B Undercarriage length 11’9”  (3 580 mm)*C Counterweight clearance 2’11”    (890 mm)D Rear-end swing radius 7‘0”  (2 130 mm)D’Rear-end length 6’11”  (2 100 mm)E Overall width of upperstructure 8‘1”(2 460 mm)F Overall height of cab 8’11”  (2 720 mm) *G Min. ground clearance 1’5”    (440 mm)H Track gauge6’6”  (1 990 mm)I Track shoe width G    20”     (500 mm) G    24”    (600 mm) G     28”    (700 mm) F    20”    (510 mm)J Undercarriage width 8’2”  (2 490 mm) 8’6” (2 590 mm) 8’10” (2 690 mm)  8’2” (2 500 mm) K Overall width 8’2”  (2 500 mm) 8’6” (2 590 mm) 8’10” (2 690 mm) 8’2” (2 500 mm)L Overall length
    With 6’11” (2.10 m) arm 24’10”(7 570 mm)
    With 8’3” (2.52 m) arm 24’10”  (7 580 mm)
    With 9’11” (3.01 m) arm                                                                                           24’11”   (7 590 mm)                                                                                               
    M Overall height of boom
    With 6’11” (2.10 m) arm 8’5”(2 570 mm)
    With 8’3” (2.52 m) arm 8’10”  (2 680 mm)
    With 9’11” (3.01 m) arm **8’9”  (2 670 mm)N Track height
    With triple grouser shoes 2’7”    (790 mm)*Excluding track shoe lug          G:  Triple grouser shoe
    ** This dimension is shown in the transportation hole position of the armF:   Flat shoe
    EX120
    Arm length 6’11” (2.10 m) 8’3” (2.52 m) 9’11” (3.01 m)A   Max. digging reach 25’11” (7 900 mm) 27’2” (8 270 mm) 28’8” (8 740 mm)A’   Max. digging reach
    25’6” (7 770 mm) 26’8” (8 140 mm) 28’3” (8 620 mm)
    (on ground)B   Max. digging depth 16’11” (5 160 mm) 18’3” (5 570 mm) 19’11” (6 060 mm)B’  Max. digging depth
    16’2” (4 920 mm) 17’7” (5 360 mm) 19’3” (5 880 mm)
    (8’ level)C   Max. cutting height 27’5” (8 350 mm) 28’1” (8 550 mm) 29’2” (8 880 mm)D   Max. dumping height 19’6” (5 940 mm) 20’2” (6 140 mm) 21’3” (6 470 mm)E   Min. swing radius 7’7” (2 310 mm) 7’8” (2 330 mm) 8’6” (2 590 mm)F   Max. vertical wall  15’3” (4 640 mm) 16’5” (5 010 mm) 18’0” (5 480 mm)
    ISO
    20,100 lbf 
    (9 100 kgf)
    Bucket digging
    force  17,600 lbf 
    SAE: PCSA
    (8 000 kgf)
    ISO
    15,000 lbf 13,400 lbf 11,900 lbf
    (6 800 kgf) (6 100 kgf) (5 400 kgf)
    Arm crowd force
    SAE: PCSA
    14,600 lbf 13,000 lbf 11,700 lbf
    (6 600 kgf) (5 900 kgf) (5 300 kgf)
    Excluding track shoe lug
    Specifications: EX120 
    						
    							Load radius
    6.56 ft (2.0 m) 9.84 ft (3.0 m) 13.12 ft (4.0 m) 16.40 ft (5.0 m) 19.69 ft (6.0 m) 22.97 ft  (7.0 m)    At max. reach
    *4.17 *4.17 *3.06 *3.06
    (1.89) (1.89) (1.39) (1.39)5.75 *6.46 *2.91 *2.91
    (2.61) (2.93) (1.32) (1.32)
    *7.14 *7.14 5.67 *6.94 4.08 *5.97 *2.87 *2.87
    (3.24) (3.24) (2.57) (3.15) (1.85) (2.71) (1.30) (1.30)
    *11.71 *11.71 7.89 *9.06 5.47 *7.80 3.99 5.97 2.65 *2.89
    (5.31) (5.31) (3.58) (4.11) (2.48) (3.54) (1.81) (2.71) (1.20) (1.31)
    7.41 *11.20  5.22 7.89 3.86 5.84 2.91 *4.19        2.51 *2.98
    (3.36) (5.08) (2.37) (3.58) (1.75) (2.65) (1.32) (1.90)        (1.14) (1.35)6.99 10.98 4.98 7.65 3.73 5.69 2.84 4.41      2.51 *3.15 
    (3.17) (4.98) (2.26) (3.47) (1.69) (2.58) (1.29) (2.00)      (1.14) (1.43)6.75 10.69 4.81 7.45 3.62 5.58 2.80 4.37        2.60 *3.42
    (3.06) (4.85) (2.18) (3.38) (1.64) (2.53) (1.27) (1.98)        (1.18) (1.55)
    10.69 *11.88 6.66 10.60 4.72 7.34 3.55 5.51 2.84 *3.84
    (4.85) (5.39) (3.02) (4.81) (2.14) (3.33) (1.61) (2.50) (1.29) (1.74)
    *11.44 *11.44 10.76 *16.23 6.66 10.60 4.70 7.34 3.55 5.51 3.33 *4.50 
    (5.19) (5.19) (4.88) (7.36) (3.02) (4.81) (2.13) (3.33) (1.61) (2.50) (1.51) (2.04)*13.36 *13.36  10.91  *14.66 6.77 10.71 4.78  7.41 4.32  *5.71    
    (6.06) (6.06) (4.95) (6.65) (3.07) (4.86) (2.17) (3.36) (1.96) (2.59)
    11.20 *11.24 6.97 *8.93
    (5.08) (5.10) (3.16) (4.05)
    Lifting Capacities: EX120
    10
    EX120Boom: 15.09’  
    (4.60 m)
    Arm: 6.89’  
    (2.10 m)
    Bucket:
    PCSA: 0.77 yd
    3
    (0.59 m
    3)
    CECE: (0.50 m3)
    Shoes: 20” 
    (500 mm)
    Conditions
    ft 
    (m)20.05’
    (6.11)  
    22.28’
    (6.79)
    23.75’
    (7.24)
    24.61’
    (7.50)
    24.93’
    (7.60)
    24.77’
    (7.55)
    24.08’
    (7.34)
    22.83’
    (6.96)
    20.87’
    (6.36)
    17.91’ 
    (5.46)
    *4.78 *4.78 *2.56 *2.56
    (2.17) (2.17) (1.16) (1.16)*5.56 *5.56 4.17 *4.25 *2.45 *2.45
    (2.52) (2.52) (1.89) (1.93) (1.11) (1.11)5.75 *6.04 4.14 *5.53 *2.40 *2.40
    (2.61) (2.74) (1.88) (2.51) (1.09) (1.09)
    *7.65 *7.65 *7.45 *7.45 5.53 *7.14 4.03 6.04 3.00 *4.21 2.40 *2.45
    (3.47) (3.47) (3.38) (3.38) (2.51) (3.24) (1.83) (2.74) (1.36) (1.91) (1.09) (1.11)11.68 *14.29 7.56 *10.23 5.29 7.98 3.88 5.89 2.93 4.50 2.29 *2.54
    (5.30) (6.48) (3.43) (4.64) (2.40) (3.62) (1.76) (2.67) (1.33) (2.04) (1.04) (1.15)
    7.10 11.11 5.03 7.69 3.73 5.71 2.84 4.41 2.27 *2.69
    (3.22) (5.04) (2.28) (3.49) (1.69) (2.59) (1.29) (2.00) (1.03) (1.22)
    *8.25 *8.25 6.79 10.76 4.83 7.47 3.62 5.58 2.78 4.34 2.36 *2.93
    (3.74) (3.74) (3.08) (4.88) (2.19) (3.39) (1.64) (2.53) (1.26) (1.97) (1.07) (1.33)10.58 *12.65 6.64 10.58 4.70 7.34 3.53 5.49 2.73 4.30 2.56 *3.31
    (4.80) (5.74) (3.01) (4.80) (2.13) (3.33) (1.60) (2.49) (1.24) (1.95) (1.16) (1.50)
    *11.13 *11.13 10.63 *17.75 6.59 10.54 4.65 7.28 3.51 5.47 2.93 *3.88
    (5.05) (5.05) (4.82) (8.05) (2.99) (4.78) (2.11) (3.30) (1.59)   (2.48) (1.33) (1.76)*15.28 *15.28 10.76 *15.96 6.66 10.60 4.67 7.32 3.55 5.51
    (6.93) (6.93) (4.88) (7.24) (3.02) (4.81) (2.12) (3.32) (1.61)   (2.50) 
    11.00 *13.07 6.81 *10.30 4.83 7.47
    (4.99) (5.93) (3.09) (4.67) (2.19) (3.39)
    19.69 ft (6 m)16.40 ft (5 m)13.12 ft (4 m)9.84 ft (3 m)6.56 ft (2 m)3.28 ft (1 m)0 ft (Ground)-3.28 ft (-1 m)-6.56 ft (-2 m)-9.84 ft (-3 m)-13.12 ft (-4 m)
    Boom: 15.09’  
    (4.60 m)
    Arm: 8.27’  
    (2.52 m)
    Bucket:
    PCSA: 0.72 yd
    3
    (0.55 m
    3)
    CECE: (0.45 m3)
    Shoes: 20” 
    (500 mm)
    a: Load radius
    b: Load point height
    c: Lifting capacity
    Rating over side
    or 360 degreesRating
    over frontUnit
    Measure:
    1,000 lb 
    (1 000 kg)
    Notes:  1.  Ratings are based on SAE J1097.
    2.  Lifting capacity of the Super EX Series does not exceed 75% of tipping load with the 
    machine on firm, level ground or 87% of full hydraulic capacity.
    3.  The load point is a hook (not standard equipment) loaded on the back of the bucket.
    4.  * Indicates load limited by hydraulic capacity.
    5.  English measurements are rounded based on metric originals.
    *3.26 *3.26 *2.34 *2.34
    (1.48) (1.48) (1.06) (1.06)4.34 *4.52 *2.25 *2.25
    (1.97) (2.05) (1.02) (1.02)
    *4.96 *4.96 4.30 *4.98 3.17 *3.90 *2.23 *2.23
    (2.25) (2.25) (1.95) (2.26) (1.44) (1.77) (1.01) (1.01)
    *5.36 *5.36 *5.69 *5.69 4.17 *5.60 3.13 4.72 2.23 *2.25
    (2.43) (2.43) (2.58) (2.58) (1.89) (2.54) (1.42) (2.14) (1.01) (1.02)
    *12.04 *12.04 7.83 *9.06 5.45 *7.61 4.01 6.02 3.04 4.61 2.12 *2.31
    (5.46) (5.46) (3.55) (4.11) (2.47) (3.45) (1.82) (2.73) (1.38) (2.09) (0.96) (1.05)
    7.30 *11.29 5.16 7.85 3.84 5.82 2.93 4.50 2.09 *2.45
    (3.31) (5.12) (2.34) (3.56) (1.74) (2.64) (1.33) (2.04) (0.95) (1.11)
    *10.58 *10.58 6.88 10.87 4.89 7.56 3.68 5.64 2.84 4.41 2.16 *2.65
    (4.80) (4.80) (3.12) (4.93) (2.22) (3.43) (1.67) (2.56) (1.29) (2.00) (0.98) (1.20)10.49 *12.63 6.66 10.60 4.74 7.36 3.57 5.53 2.78 4.34 2.31 *2.95
    (4.76) (5.73) (3.02) (4.81) (2.15) (3.34) (1.62) (2.51) (1.26) (1.97) (1.05) (1.34)
    *9.88 *9.88 10.47 *17.20 6.55 10.49 4.65 7.28 3.51 5.47 2.76 4.30 2.58 *3.40
    (4.48) (4.48) (4.75) (7.80) (2.97) (4.76) (2.11) (3.30) (1.59)   (2.48) (1.25) (1.95) (1.17) (1.54)*14.99 *14.99 10.56 *17.17 6.57 10.49 4.63 7.28 3.51 5.47 3.11 *4.14
    (6.80) (6.80) (4.79) (7.79) (2.98) (4.76) (2.10) (3.30) (1.59) (2.48) (1.41) (1.88)*19.91 *19.91 10.76 *14.88 6.68 *10.63 4.72 7.36 4.19 *5.60
    (9.03) (9.03) (4.88) (6.75) (3.03) (4.82) (2.14) (3.34) (1.90) (2.54)
    19.69 ft (6 m)16.40 ft (5 m)13.12 ft (4 m)9.84 ft (3 m)6.56 ft (2 m)3.28 ft (1 m)0 ft (Ground)-3.28 ft (-1 m)-6.56 ft (-2 m)-9.84 ft (-3 m)-13.12 ft (-4 m)
    Boom: 15.09’ 
    (4.60 m)
    Arm: 9.88’ 
    (3.01 m)
    Bucke:t
    PCSA: 0.52 yd
    3
    (0.40 m
    3)
    CECE: 0.33 m3
    Shoes: 20” 
    (500 mm)
    23.43’
    (7.14)25.33’
    (7.72)26.61’
    (8.11)27.36’
    (8.34)27.66’
    (8.43)27.53’
    (8.39)26.94’
    (8.21)25.82’
    (7.87)24.15’
    (7.36)21.75’
    (6.63)18.31’
    (5.58)
    Load
    point
    height19.69 ft (6 m)
    16.40 ft (5 m)
    13.12 ft (4 m)
    9.84 ft (3 m)
    6.56 ft (2 m) 
    3.28 ft (1 m)
    0 ft  (Ground)
    -3.28 ft (-1 m)
    -6.56 ft (-2 m)
    -9.84 ft (-3 m)
    -13.12 ft (-4 m)
    21.56’
    (6.57)23.62’
    (7.20)25.00’
    (7.62)25.82’
    (7.87)26.15’
    (7.97)25.98’
    (7.92)25.33’
    (7.72)24.15’
    (7.36)22.31’
    (6.80)
    Specifications: EX120
    11
    ENGINE• H/P mode control
    • E mode control
    • 40 A alternator
    • Dry-type air filter with evacuator 
    valve (with safety element)
    • Cartridge-type engine oil filter
    • Cartridge-type engine oil 
    bypass filter
    • Cartridge-type fuel filter
    • Air cleaner double element
    • Radiator and oil cooler with 
    dust protective net
    • Radiator reserve tank
    • Fan guard
    • Isolation-mounted engine
    • Auto-idle systemHYDRAULIC SYSTEM• Work mode selector
    • E-P control system
    • Quick warm-up system for 
    pilot circuit
    • Shockless valve in pilot circuit
    • Boom-arm anti-drift valve
    • Control valve with main relief
    valve
    • Extra port for control valve
    • Suction filter
    • Full-flow filter
    • Pilot filter
    CAB• All-weather sound-suppressed 
    steel cab 
    • Reinforced, tinted (bronze color) 
    glass windows
    • 6 fluid-filled elastic mounts
    • Front windows-upper, and lower 
    and left side windows can be   
    opened
    • Intermittent retractable 
    windshield wipers
    • Front window washer
    • Adjustable reclining suspension
    seat with adjustable armrests
    • Footrest
    • Electric double horn
    • Auto-tuning AM/FM radio with 
    digital clock 
    • Auto-idle switch
    • Seat belt
    • Cigarette lighter
    • Ashtray
    • Parcel pocket
    • Glove compartment
    • Floor mat
    • Heater
    • Pilot control shut-off lever• Air conditioning
    • Hot & Cool box
    MONITOR SYSTEM•Meters:
    Hourmeter, engine coolant 
    temperature gauge, fuel meter  
    • Warning lamps:
    Alternator charge, engine oil pres-
    sure, engine overheat, air cleaner
    clog, minimum fuel level
    • Pilot lamps:
    Engine preheat, engine oil level, 
    engine coolant level,  
    hydraulic oil level
    • Alarm buzzers:
    Engine oil pressure, engine 
    overheatLIGHTS• 2 working lightsUPPERSTRUCTURE• Undercover
    • 4,960 lb (2 250 kg) counterweight
    • Fuel level float
    • Hydraulic oil level gauge
    • Tool  box
    • Rearview mirror (right side)  
    • Swing parking brake• Travel motion alarm device
    UNDERCARRIAGE• Travel parking brake
    • Travel motor covers
    • Hydraulic track adjuster
    • Bolt-on sprocket
    • Upper rollers and lower rollers
    • Reinforced track links with pin sealsFRONT ATTACHMENTS• HN bushing (specified country only)
    • Bucket clearance adjust mechanism
    • Monolithically cast bucket link A
    • Centralized lubrication system
    • Dirt seals on all bucket pins
    • 8’3” (2.52 m) armMISCELLANEOUS• Standard tool kit
    • Lockable machine covers
    • Lockable fuel filling cap
    • Skid-resistant tapes and handrails  
    • Hose rupture valves
    • Electric fuel refilling pump
    • Swing motion alarm device with lamp
    • Additional pump
    • Piping kit for extra valve port
    • Auto-lubrication system
    • Pre-cleaner
    • Tropical  cover• Front glass lower guard
    • Reinforced undercover for upperstructure
    • Track  guard
    • 0.72 yd
    3(0.55 m
    3: PCSA heaped) Level pin-
    reinforced bucket
    • One-point ripper for ripping hardpan
    • Clamshell bucket for deep vertical excavations
    such as manholes, pilings, footings, etc.
    Standard EquipmentOptional Equipment
    Optional equipment may vary by country, so please consult your Hitachi dealer for details.Standard equipment may vary by country, so please consult your Hitachi dealer for details. 
    						
    							Hitachi of North America
    • 37 Dealers
    • 194 Dealer Facilities
    • Parts Warehouses
    – Houston, Texas
    – Vancouver, B.C. • Manufacturing Plants
    – Tsuchiura, Japan
    – Tierra, Japan
    – Kernersville, North Carolina
    – Langley, B.C.
    – Saltillo, Mexico
    Hitachi excavators, 
    mini excavators, mining
    shovels, cranes and
    forestry machines are 
    the best you can buy.
    Our commitment to
    superior product support
    is equally outstanding.
    HITACHI
    HCMA/C 120-4/00 10M
    Hitachi Construction & Mining Division - Americas
    1515 5th Avenue • Moline, IL 61265 
    						
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