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Каталог / Дорожно-строительная техника / Hyundai / Экскаваторы / Гусеничный экскаватор 290LC-7

Гусеничный экскаватор 290LC-7.
290LC-7Built for Maximum Power, Performance, Reliability.
A new chapter in construction equipment has now begun. Making the dream a reality.

Operator’s Comfort is Foremost. Wide Cab Exceeds Industry Standards.
Visibility.
Even more visibility than before, for safer, more efficient operating.

Excellent Ventilation.
Ventilation has been improved by the addition of the larger fresh air intake system, and by providing additional air flow throughout the cab.
Sliding front and side windows provide improved ventilation.
A large sunroof offers upward visibility and additional ventilation.

Comfortable Operator Environment.
The control levers and seat can be adjusted to provide maximum operator comfort.
The seat is fully adjustable for optimum operating position, reducing operator fatigue.
Console boxes slide forward and backward for improved accessibility.
The proportional pressure controls reduce unnecessary exertion while ensuring precise operation.
Large windows allow excellent visibility in all directions.

Low noise design.
The Robex 7 series was designed with low operation noise in mind.
Hyundai engineering helps to keep interior and exterior noise levels to a minimum.
The cab's noise levels have been additionally reduced by improving the door seals for the cab and engine compartments.
An insulated diesel engine compartment with sound-damping material also reduces noise.

Wide Cab with Excellent Visibility.
The cab is roomy and ergonomically designed with low noise level and good visibility.
A full view front window and large rear and side windows provide excellent visibility in all directions.

Highly Sensitive Joystick and Easy Entrance.
New joystick grips for precise control have been equiped with double switches.
(Left: Power boost / One touch deceleration, Right: Horn/Optional).

Easy-to-Reach Control Panels.
Switches and other essential controls are located near the operator.
This helps keep operator movement to a minimum, enhancing control with less operator fatigue.

Wide, Comfortable Operating Space.
All the controls are designed and positioned according to the latest ergonomic research. Reinforced pillars have also been added for greater cab rigidity.

Minimization of Shock and Vibration through Cab Mounting System.
The application of Viscous Mounting to the cabin support provides the operator with a much improved ride. The operator work efficiency will increase as the shock and noise level in the cabin decreases.

Improved Intelligent Display.
Instrument Panel is installed in front of RH console box. It is easy to check all critical systems with easy-to-read indicators.

Rise-up Wiper and Cabin Lights.
Raise-up wiper has enhanced for the better front view. Cabin Lights enhances safety by brightly lighting the surroundings during night work(optional).

Rear Emergency Exit Window.
Rear Exit Window is designed with easy exit for operator's safety.

Hot & Cool Box.
The New Cab has even more space for the operator. An Additional storage box is located behind operators seat, and it keeps food and beverages cool or hot.

Advanced CAPO System.
The Advanced CAPO(Computer Aided Power Optimization) system maintains engine and mutual pump power at optimum levels. Mode selections are designed for various work loads and maintaining high performance while reducing fuel consumption. Features such as auto deceleration and power boost are included in the system. The system monitors engine speed, coolant temperature, and hydraulic oil temperature. Contained within the system are self diagnostic capabilities which are displayed by error codes on the cluster.

Self Diagnosis System.
The CPU controller diagnoses problems in the CAPO system caused by electric and hydraulic malfunctions and displays them on the LCD monitor of the cluster through error codes. This controller has the capacity to identify 48 distinct types of errors. As the information from this device, such as engine rpm, main pump delivery pressure, battery voltage, hyd. temperature, and the state of all types of electric switches, provides the operator with a much more exact state of machine operating condition. This makes the machine easier to troubleshoot when anything does go wrong.

Arm Flow Regeneration System.
Arm flow regeneration valve provides smooth arm-in operation without cavitation.

Boom & Arm Holding System.
The Holding valves in the main control valve prevents the boom & arm from dropping over an extended period in neutral position.

Auto Deceleration System.
When remote-control valves are in neutral position more than 4 seconds, CPU controller instructs the accel actuator to reduce engine speed to 1200rpm. This decreases, fuel consumption and reduced cab noise levels.

One Touch Decel System.
When the one touch decel switch is pressed, CPU controller controls the accel actuator to reduce engine speed to 950 rpm. And then the one touch decel switch is pressed again, the engine speed recovers.

Max. Flow Cut-off System.
For precise control and finishing work, the Max. Flow Cut-off System reduces pump flow, thus allowing smooth operation.

Automatic Engine Overheat Prevention.
If the engine coolant temperature gets too high, the CPU controller lowers the engine speed and cools the engine.

Anti Restart System.
The new system protects the starter from restarting during engine operation, even if the operator accidentally turns the start key again.

Power boost control System.
When the power boost system is activated, digging power increases about 10%. It is especially useful when extra power is temporarily needed, for instance, when digging hard earth and rock, or if the bucket teeth are stopped by a stubborn tree root.

Automatic Warming-up System.
After the engine is started, if the engine coolant temperature is low, the CPU controller increases the engine speed and automatically increases the pump flow rate to warm up the engine more effectively.

Pump Flow Control System.
In neutral position: Pump flow is reduced to a minimum to eliminate power loss. In operation: Maximum pump flow is delivered to the actuator to increase the speed. With movement of the control lever, pump flow is automatically adjusted and the actuator speed can be proportionally controlled.

Hydraulic Damper in Travel Pedal.
Improved travel controllability & feeling by shock reducing when starting and stopping.

CUMMINS QSB5.9-C Engine.
The six cylinders, turbo-charged, 4 cycle, Charger air cooled engine is built for power, reliability, economy and low emissions. This engine meets Tier??emissions regulations.

The Definition of Progress.
The Quantum System B Series 5.9-liter engine combiness full-authority electronic controls with the reliable performance. The electronics in the QSB5.9-C have been proven in our high-horsepower productsworking in the harshest, most demanding environments-like dusty, non-stop mining operations-while meeting emissions regulations worldwide.
The QSB5.9-C is the only engine in its class to feature 24-valve design with centered injectors and a symmetrical piston bowl. The combination of improved airflow and evenly dispersed fuel results in increased power, improved transient reponse and reduced fuel consumption.

Reinforced Bucket and Bucket Linkage.
Sealed and adjustable bucket linkage provides less wear of pins and bushes as well as silent operation.The design includes bucket link durability and anti wear characteristics. Additional reinforcement plates on cutting edge section. Reinforced bucket is made with thicker steel and additional lateral plate.

Track Rail Guide & Adjusters.
Durable track rail guides keep track links in place. Track adjustment is made easy with standard grease cylinder track adjusters and shock absorbing springs.

Strong and Stable Lower Frame.
Reinforced box-section frame is all welded, low-stress, high-strength steel. It guarantees safety and resistance against external impact when driving on rough ground and working on wet sites through high tensile strength steel panels, with highly durable upper and lower rollers and track guards.
Long undercarriage incoporates heavy duty excavator style components. X-leg type center frame is integrally welded for maximum strength and durability.

Powerful and Preciser Swing Control.
Improved shock absorbing characteristics make stopping a precise and smooth action.

Full open doors and master key system provide easy access for servicing.
Handrails and foot steps are applied for safety.

Side Cover with Left & Right Swing Open Type.
Easy access to vital components gives unrestricted view of component allows easy maintenance and repair.

Centralized Electric Control Box and Easy Change Air Cleaner Assembly.
Electric control box and Air cleaner are centralized in one or the same compartment for easy service.

Durability of structure proven through FEM(Finite Element Method) analysis and long term durability test.

Large tool box for extra storage.
Pump output and Hydraulic tank capacity have been increased. A pilot pump has been installed resulting in improved control sensitivity.

Easy to maintain engine components.
The cooling and preheating system are provided for optimum and immediate operation, guaranteeing longer life for the engine and hydraulic components. Servicing of the engine and hydraulics is considerably simplified due to total accessibility.

Engine.

Model Cummins QSB5.9-C
Type Watercooled, 4 cycle Diesel,6-Cylinders in line, direct injection,Turbo charged, charger air cooled and low emission
Rated flywheel horse power SAE J1995 (gross) 213 HP (159 kW) at 1900 rpm
J1349 (net) 197 HP (147 kW) at 1900 rpm
DIN 6271/1 (gross) 216 PS (159 kW) at 1900 rpm
6271/1 (net) 200 PS (147 kW) at 1900 rpm
Max. torque 94.7 kgf.m(685 lbf.ft) at 1500 rpm
Bore x stroke 102 x 120 mm (4” x 4.7”)
Piston 5,880 cc (359 cu in)
Batteries 2 x 12 V x 160 AH
Starting motor 24 V, 4.5kW
Alternator 50 Amp

Hydraulic system.

Main pump
Type Two variable displacement piston pumps
Max. flow 2x260 min (68.7 US gpm / 57.2 UK gpm)
Sub-pump for pilot circuit Gear pump
Cross-sensing and fuel saving pump system
Hydraulic motors
Travel Two speed axial piston motor with brake valve and parking brake
Swing Axial piston motor with automatic brake
Relief valve setting
Implement circuits 330 kgf/cm2 (4690 psi)
Travel 330 kgf/cm2 (4690 psi)
Power boost (boom, arm, bucket) 360 kgf/cm2 (5120 psi)
Swing circuit 265 kgf/cm2 (3770 psi)
Pilot circuit 40 kgf/cm2 (500 psi)
Service valve Installed
Hydraulic cylinders
No. of cylinderbore x rod x stroke Boom 2-140X100X1465 mm (5.5”X3.9”X57.7”)
Arm 1-150X110X1765 mm (5.9”X4.3”X69.5”)
Bucket 1-140X95X1185 mm (5.5”X3.7”X46.7”)

Drives & Brakes.

Drive method Fully hydrostatic type
Drive motor Axial piston motor, in-shoe design
Reduction system Planetary reduction gear
Max. drawbar pull 27300 kgf (60200 lbf)
Max. travel speed(high) / (low) 5.2 km/hr (3.2 mph) / 3.1 km/hr (1.9 mph)
Gradeability 35° (70 %)
Parking brake multi wet disc

Control.
Pilot pressure operated joysticks and pedals with detachable lever provide almost effortless and fatigueless operation.

Pilot control Two joysticks with one safety lever (LH): Swing and arm, (RH): Boom and bucket(ISO)
Traveling and steering Two levers with pedals
Engine throttle Electric, Dial type
External Lights Two lights mounted on the boom one under the battery box

Swing system.

Swing motor Axial piston motor
Swing reduction Planetary gear reduction
Swing bearing lubrication Grease-bathed
Swing brake multi wet disc
Swing speed 11.0 rpm

Coolant & Lubricant capacity.

(refilling) liter US gal UK gal
Fuel tank 480 126.8 105.6
Engine coolant 50.0 13.2 11.0
Engine oil 23.7 6.3 5.2
Swing device 7.0 1.8 1.5
Final drive(each) 11.0 2.9 2.4
Hydraulic system(including tank) 320.0 84.5 70.4
Hydraulic tank 210.0 55.5 46.2

Undercarriage.
X-leg type center frame is integrally welded with reinforced boxsection track frames. The undercarriage includes lubricated rollers, idlers, track adjusters with shock absorbing spring and sprocket, assembled trak chain with triple grouser shoes.

Center frame X - leg type
Track frame Pentagonal box type
No. of shoes on each side 48
No. of carrier roller on each side 2
No. of track roller on each side 9
No. of rail guides on each side 2

Operating weight (approximate).
Operating weight, including 6.25 m (20’ 6”) boom, 3.05 m (10’ 0”) arm, PCSA heaped 1.27 m3 (1.66 yd3) backhoe bucket, lubricant, coolant, full fuel tank, hydraulic tank and the standard equipment.

Major component weight
Upperstructure 7,040 kg (15,520 lb)
Counterweight 5,200 kg (11,460 lb)
Boom (with arm cylinder) 2,670 kg (5,900 lb)

Operating weight.

Shoes Operating weight Ground pressure
Type Width mm (in) kg (lb) kgf / cm2 (psi)
Triple grouser 600 (24) R290LC-7
R290NLC-7
R290LC-7 H/C
29,300 (64,600)
29,100 (64,150)
32,140 (70,860)
0.56 (7.97)
0.55 (7.82)
0.62 (8.82)
700 (28) R290LC-7
R290LC-7 H/C
29,880 (65,870)
32,720 (72,140)
0.49 (6.97)
0.54 (7.68)
800 (32) R290LC-7
R290LC-7 H/C
30,460 (67,150)
33,300 (73,410)
0.44 (6.26)
0.48 (6.83)
900 (36) R290LC-7 31,040 (68,430) 0.38 (5.40)
Double grouser 710 (28) R290LC-7 H/C 33,310 (73,440) 0.54 (7.68)

Buckets.

Arms.
Boom and arms are of all-welded, low-stress, full-box section design. 6.25m(20’ 6”) boom and 2.10m(6’ 11”), 2.50m(8’ 2”), 3.05m(10’ 0”), 3.75m(12’ 4”) arms are available. Buckets are all-welded, high-strength steel implements.

 


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