Excavator

Excavator
Posted Mon, 07/19/2010 - 05:42

Excavator

A excavator is a heavy equipment machine consisting of a boom (backhoe), a bucket and a cab on a rotating platform. It is also know as a digger or a 360-excavator. In the latest years, the applications of hydraulic excavator are expanded far beyond excavation tasks with buckets. For instance, hydraulic powered excavator attachments such as a breaker, a grapple or an auger can be attached to excavators for more applications other than excavation. As a result, the smaller excavator that is known as mini excavator or compact excavator is increasingly demanded in the market.

Applications
Excavators are used in many ways.
1. Digging of trenches, holes, foundations
2. Material handling
3. Brush cutting with hydraulic attachments
4. Forestry work
5. Demolition
6. General grading/landscaping
7. Heavy lift, e.g. lifting and placing of pipes
8. Mining, especially, but not only open，pit mining
9. River dredging
10. Driving piles, in conjunction with a Pile Driver

Specifications
924F Excavator

Operating Weight 24.1T
Bucket Capacity 1.1m3
Operating Weight 24.1T
Engine Model CUMMINS QSB6.7 (tire 3)
Type 6 cylinders, in line
Rated Power 142kw/2200rpm
Breath Turbo-charged, air cooled
Qty of cylinder 6
Cooling Water cooled
Air filter Dry air filter
Throttle Control Electric control
Fuel tank 360 L
Starter 24V/7.5KW
Main Equipment Main valve Kawasaki Japan
Main pump Kawasaki Japan
Hydraulic operating valve Kawasaki Japan
Traveling motor and Reducer TEIJIN, Japan
Cylinder Chinese
Hose Imported from Italy
Cabin Streamlined cabin, high-grade suspension seat
Air conditioner & Sound Cool and hot air conditioner, stereo sound.
Rollers & track domestic famous companies
Swing motor Kawasaki Japan
Working Scope stick length 3
Max. digging depth 7.04
Max. digging radius 10.25
Max. digging height 9.53
Max. dump height 6.7
Digging force of stick cylinder 95
Digging force of bucket cylinder 140

EC80, EC60, EC40 Hydraulic Excavator

  EC80 EC60 EC40
Max. Digging dia 6375 6130 5810
Max. Digging reach 6224 5990 5702
Max. Digging height 7167 5660 5317
Max. Dumping 5100 3970 3697
Max. Digging depth 4140 3830 3598
Min. Swing radius 1815 2450 2385
Dimension (mm) EC80 EC60 EC40
Overall length 6155 5850 5455
Overall width 2220 1885 1650
Cab height 2618 2584 2440
Weight Ground clearance 786 694 578
Min. clearnce 392 369 350
Tail swing radius 1770 1650 1490
Wheel base 2119 1985 1721
Track shoe length 2752 2548 2198
Track shoe thick 2150 1880 1635
Track shoe height 710 639 532.5
Track shoe width 450 400 300
Blade (W/H) -- 1880/363 1650/300
Item   unit EC80 EC60 EC40
Operating weight   kg 7280 5650 4050
bucket capacity   M3 0.34 0.2 0.14
LXWXH   mm 6155/2220/2618 5900/1885/2584 5455/1650/2440
Engine Model -- Cummins B3.3 YANMAR 4TNV94L YANMAR 4TNV88-SYY
Rated power kW/ r/min 60/2200 39/2200 27.1/2200
Max. torque N.m 291 200 130
Displacement L 3.26 3.054 2.19
Fuel tank L 135 120 65
Hydraulic system Main pump   1 PZS and 1 gear pump 2 PZS and 1 gear pump 1 PZS and 1 gear pump
Rated flow L/min 1×198+21 2×55+35.6 1×110+11
Working press MPa 27.4 21.5 21
Hy. Oil pump L 60 85 70
specifications Swing speed r/min 12.0 9.0 14
Bucket digging force kN 53.6 42.5 23.2
Arm crowding force kN 39.2 28.6 19.3
Max. traction kN 56 50.5 33.9
Travel speed km/h 4.2/2.7 3.8/2.1 4.2/2.6
Ground clearance % 70 70 58
Ground pressure kPa 31 32.1 36.3

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