GC78-8 Hydraulic Crawler Excavator

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Product Description:

GC78-8 Hydraulic Crawler Excavator, equipped with YANMAR 4TNV94L Engine, with Boom 3.71m, Arm 1.65m, Bucket 0.28m3, and Blade 2150mm×342.3mm.

GC78-8 Hydraulic Crawler Excavator

Technical Specifications

        Engine

    Travel System

Model

YANMAR 4TNV94L

Travel motors

JEIL, Korea; Variable axial piston motor

Type

Four-cylinder in line,

natural intake

Support roller quantities

2×5

Carrier roller quantities

2×1

No. of cylinder

4

Travel shoes

2×38

Bore and stroke

98mm×110mm

Travel speed

2.8/4.8km/h

Displacement

3.319L

Drawbar pulling force

57kN

Power output

43.4kW/2200rpm

Grade ability

70% (30°)

Ground clearance

384mm

      Hydraulic System

      Cab Control

Pump

NACHI, Japan

Cab

All-weather, sound-suppressed Cab and equipped with a heavy, insulated Floor Mat; Front Window can be opened and slid; 6-direction adjustable Seat; LED display, Automatic monitoring, display and warning; cool & hot Air Conditioner

Type

variable double–piston pump

Max. discharge flow

169.5L/min

Max. discharge pressure

Boom, arm and bucket

28MPa

Control

Two hand levers and two foot pedals for travel Two hand levers for excavating and swing;

Electric rotary-type engine throttle

Travel circuit

28MPa

Swing circuit

23.5MPa

Control circuit

3.5MPa

Boom, Arm Bucket

Pilot control pump

Gear type

Boom cylinder

115mm×65mm×840mm

Main control valve

Negative flow control

Arm cylinder

100mm×60mm×855mm

Oil cooler

Air cooled type

Bucket cylinder

90mm×55mm×710mm

      Swing System

Refilling Capacitieslubrications

Swing motor

JEIL, Korea;

Fuel tank

130L

Swing motor type

Axial-piston motor

Cooling system

8L

Brake

Hydraulic oil released

Engine oil

12L

Parking brake

Hydraulic disc brake

Hydraulic oil tank

95L  Tank oil level

Swing speed

11.3r/min

114L  Hydraulic system

                          Bucket


Type

Backhoe bucket


    Bucket capacity

0.28m3 (SAE)


Bucket width

750mm


Arm Type


A

Max. digging depth

7222mm


B

Max. dumping height

5145mm


C

Max. digging height

3963mm


D

Max. vertical digging depth

3715mm


E

Max. Depth cut for 2440m(8')Level Bottom

3874mm


F

Max. digging distance

6324mm


G

Max. digging radius at ground level

6171.8mm


H

Min. swing radius of work equipment

1818.5mm


Digging Force (ISO6015)        Unit: kN


Arm length

1650mm


Bucket digging force

56kN


Arm digging force

41.5kN


Arm Type                                 1650mm


A

Overall length

6320mm

I

Tread

2130mm


B

Ground contact length (Transportation)

4330mm

J

Track length

2749.5mm


C

Overall height(to top of boom)

2829mm

K

Track gauge

1700mm


D

Overall width

2150mm

L

Track width

2150mm


E

Overall height(to top of cab)

2652mm

M

Shoe width

450mm


F

Counter weight ground clearance

812mm

O

Bonnet height

1775mm


G

Ground clearance

384mm

P

Revolving frame width

2203mm


H

Tail swing radius

1822mm

Q

Distance from swivel center to tail

1750mm



             Operating Weight and Ground Pressure


Operating weight includes basic machine (with boom 3.71m, arm 1.65m bucket 0.28m3, and blade 2150mm×342.3mm)


Shoe width

450mm


Overall width

2150mm


Ground pressure

32KPa


Operating weight

7000kg





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