GC378LC-8 Hydraulic Crawler Excavator

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GC378LC-8 Hydraulic Crawler Excavator’s Operating Weight is 35.7t, equipped with CUMMINS 6C8.3 Engine, with Boom 6.47m, Arm 3.186m, Bucket 1.62m3.

GC378LC-8 Hydraulic Crawler Excavator

Technical Specifications

Engine

Travel System

Model

CUMMINS 6C8.3

Travel motors

BONFIGLIOLI, Italia; /NABTESCO, Japan; Variable axial piston motor

Type

Water cooling, turbocharged, empty enter-cooling

Support roller quantities

2×9

Carrier roller quantities

2×2

No. of cylinder

Travel shoes

2×48

Bore and stroke

114mm×134.9mm

Travel speed

5.0/3.0km/h

Displacement

8.29L

Drawbar pulling force

280kN

Power output

186kW/2200rpm

Grade ability

70% (35°)

Ground clearance

565mm

Hydraulic System

Cab ＆ Control

Pump

LINDE, Germany

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

670.6L/min

Max. discharge pressure

Boom, arm and bucket

32.3MPa

Control

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

Electric rotary-type engine throttle

Travel circuit

32.3MPa

Swing circuit

28MPa

Control circuit

3.8MPa

Boom, Arm ＆ Bucket

Pilot control pump

Gear type

Boom cylinder

140mm×100mm×1480mm

Main control valve

Negative flow control

Arm cylinder

160mm×110mm×1825mm

Oil cooler

Air cooled type

Bucket cylinder

150mm×105mm×1250mm

Swing System

Refilling Capacities＆lubrications

Swing motor

SUNJIN, Korea

Fuel tank

580L

Swing motor type

Axial-piston motor

Cooling system

24.7L

Brake

Hydraulic oil released

Engine oil

28L

Parking brake

Hydraulic disc brake

Hydraulic oil tank

380L Tank oil level

Swing speed

9.7r/min

450L Hydraulic system

Bucket

Type

Backhoe bucket

Bucket capacity

1.62m3 (SAE)

Bucket width

1571mm

Arm Type

GC378LC-8 Hydraulic Crawler Excavator

Max. digging depth

10134mm

Max. dumping height

7182mm

Max. digging height

7240mm

Max. vertical digging depth

7170.5mm

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

6812.5mm

Max. digging distance

11051mm

Max. digging radius at ground level

10839mm

Min. swing radius of work equipment

4332mm

Digging Force (ISO6015) Unit: kN

Arm length

3200mm

Bucket digging force

213kN

Arm digging force

150kN

Arm Type 3200mm

Overall length

11161mm

Tread

4080mm

Ground contact length (Transportation)

5872mm

Track length

5044mm

Overall height(to top of boom)

3347mm

Track gauge

2600mm

Overall width

3200mm

Track width

3200mm

Overall height(to top of cab)

3293mm

Shoe width

600mm

Counter weight ground clearance

1312mm

Bonnet height

2421mm

Ground clearance

565mm

Revolving frame width

3195.3mm

Tail swing radius

3438mm

Distance from swivel center to tail

3438mm

GC378LC-8 Hydraulic Crawler Excavator

Operating Weight and Ground Pressure

Operating weight includes basic machine (with boom 6.47m, arm 3.186m, and bucket 1.62m3)

Shoe width

600mm

Overall width

3200mm

Ground pressure

62KPa

Operating weight

35700kg

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Q: Working principle of excavator running motor: Excavator motor principle: the large crawler excavator machine weight is generally above 20t, machine inertia, in the process of starting and stopping of the machine will bring bigger impact to the hydraulic system, therefore, must improve the walking control system to adapt to this condition.The motor generally adopts high speed motor plus planetary reducer or cycloidal pin gear reducer, while the control of the loop of the hydraulic motor has its characteristics. Walking motor control loop shown in Figure 1, the motor is equipped with a high-pressure automatic variable device, when hung high gear when the circuit is connected with the manual transmission oil to oil, promote the transmission valve moves to the left, the motor for small displacement; if the driving resistance increases the pressure rises to the set value, the oil valve drive transmission right for large displacement, low gear automatic variable motor, to increase the torque. Therefore, the motor can automatically change gears as the walking resistance changes.

Q: Which country makes the excavator the best?: In 1904, Holt developed the first steam crawler bulldozer. In 1906, Holt developed the first natural gas tracked bulldozer. In 1915, the Allied forces used Holt's "Caterpillar" crawler bulldozer in World War i.. In 1925, the Holt manufacturing company merged with the C. L. Best bulldozer to form a Caterpillar bulldozer. In 1931, the first Diesel Sixty bulldozer from assembly line in Illinois East Peoria line, it is a bulldozer using a new type of efficient source of power. In 1940, the Caterpillar range now included motor graders, shovel graders, lift graders, terraces and electric generators. In 1942, the United States used Caterpillar's crawler bulldozers, motor graders, generators and special engines for M4 tanks during the war. In 1950, Caterpillar bulldozer was founded in the UK, the first of many overseas companies. The aim is to help manage foreign exchange shortages, customs duties, import controls, and provide better services to global customers. In 1953, 1931, the company set up an independent engine sales team to promote diesel engines to other equipment manufacturers. In 1953, the group was replaced by an independent sales and marketing division to better meet the needs of the vast numbers of engine customers. Engine sales now make up about 1/3 of the company's total sales and revenues. In 1963, Caterpillar and MITSUBISHI heavy industries established the first joint venture in the United States with some stake in the us. Caterpillar Mitsubishi Ltd began production in 1965 and has now been renamed the new Caterpillar Mitsubishi Ltd. It is now Japan's second largest producer of construction machinery and mining equipment. 1981-83 years, the global economic downturn spread to Caterpillar, the company paid a daily loss of $one million price. The company was forced to slash staff in case it was forced to do so.

Q: I have some and i used it in my leopard geckos tank for over a year now. Is there any way to make it not as hard as cement so that my reptiles can actually burrow in it?: I think you should change the sand type. A fine grounded sand would probably work. You should check with a local pet store and see what they use just in case though.

Q: Is/are there specific formula/s?: If you wanted to calculate the volume with some accuracy, you would graph the shape of the bucket and using calculus, find the area under the curve(s). Then just multiply by the length of the bucket. Or a quick and dirty estimate would be to multiply the length by the average width times the height of product carried in the bucket. Or, using what I call the Thomas Edison method, ram the bucket into a big pile of sand, dump it out on a surface and shovel it all into buckets of known size. Add 'em all up and you've got your volume.

Q: I have a jd 490E excavator the boom function has very restricted hydraulic flow/power. I replaced the circuit release valve (two of them), which did not help at all.the problem was intermittent in the beginning, when boom control is used with stick control...quot;: The swing arm drive has a separate pump system, ether the pump is bad or the control valves have an issue. Try the forum link below.

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Q: I was thinking about digging a couple pretty simple hole in the backyard for compost and dumping grass in. The only problem is that I am thirteen and my Dad doesnt' want to do do the digging. I've had past experience doing stuff with backhoes and even those big excavators. Could my Dad legally rent one and have me do the digging, or do I need to teach him how to drive it? :): Ya sure I'm 13 and I do that stuff I have even drove his 18 wheeler into the docking station but just be sure your dad don't mention to the rebuttal place that you will be doing that stuff

Q: It’s for coal mining,so the quality must must be super good.: Try this. Last time when i was sourcing a large bucket like KOMATSU PC4000,I saw they were still carrying large backhoe bucket for Hitachi excavators.Good luck~

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