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CATERPILLAR - CRAWLER EXCAVATORS



CAT 311



TECHNICAL DATA AND PHOTOS




Model: 311


Type: Crawler hydraulic excavator.

Years of production: 1993 - 1996

Manufacturer: CATERPILLAR


ENGINE

Model: CAT 3064
Type: In-line, four-stroke, turbocharged diesel engine.
Cooling: water-cooled
Net power:
Caterpillar: 59 kW (79 HP, 80 PS) at 1800 rpm
EEC 80/1269: 59 kW (79 HP, 80 PS) at 1800 rpm
ISO 9249: 59 kW (79 HP, 80 PS) at 1800 rpm
SAE J1349 (JAN90): 58 kW (78 HP, 79 PS) at 1800 rpm
Gross power:
ISO 3046-2: 63 kW (85 HP, 86 PS) at 1800 rpm
Number of cylinders: 4
Displacement: 4.25 L (259 in3)
Bore: 102 mm (4.02 in)
Stroke: 130 mm (5.12 in)


ELECTRICAL SYSTEM

Alternator: 50 A
Electric starter: 24 V
Batteries: 2 x 12 V, 100 Ah


HYDRAULIC SYSTEM

Two variable-displacement piston pumps power the boom, stick, buckets and travel circuits.
One single-section gear pump powers the pilot control circuit.
Main hydraulic system:
Maximum flow: 2 x 110 L/min (2 x 29 US gal/min)
Maximum pressure - implements: 280 kg/cm2 (3,980 psi)
Maximum pressure - travel: 350 kg/cm2 (4,980 psi)
Maximum pressure - swing: 235 kg/cm2 (3,340 psi)
Pilot system:
Mximum flow: 20 L/min (5.3 US gal/min)
Maximum pressure: 36 kg/cm2 (566 psi)


SERVICE REFILL CAPACITIES

Hydraulic system (including tank): 146 L (38.6 US gal)
Hydraulic tank: 99 L (26.2 US gal)
Cooling system: 15.5 L (4.1 US gal)
Engine oil: 13.0 L (3.4 US gal)
Track drive (each) 2.6 L (0.69 US gal)
Swing drive: 2.8 L (0.74 US gal)
Fuel tank: 250 L (66 US gal)


DRIVE

Fully hydrostatic. Each track is driven by an independent, two speed, axial piston hydraulic motor.
Double-reduction, planetary final drives are splash lubricated.
Track motors, brakes and final drives are completely enclosed and are narrower than the width of the narrowest track shoes.

Maximum drawbar pull: 9500 kg (20,900lb)


MAXIMUM TRAVEL SPEED

Maximum travel speed: 5.5 km/h (3.4 mph)


SWING MECHANISM

Fixed-displacement, axial-piston motor powers the swing mechanism.
Double-reduction, planetary swing drive. Splash lubricated.
Optional automatic swing holding brake mountsbetween the swing motor and swing drive.
Automatically applied four seconds after swing control is released.
Brake is hadraulically released when the swing control is actuated.

Maximum swing speed: 10.8 rpm


DIMENSIONS

Transport height: 2760 mm (9'1")
Height to top of cab: 2760 mm (9'1")

Tail swing radius: 2130 mm (7'0")
Ground clearance: 440 mm (17")
Counterweight clearance: 900 mm (35")

Transport length: 7250 mm (23'9")


TRACK

Caterpillar designed and built track-type undercarriage.
Robot-welded, pentagonal design roller frames with hydraulic track adjusters.
Sealed and Lubricated Track roller and idlers.
Sealed Track with strut-type links and triple grouser shoes.

Track length: 3320 mm (10'11")
Length to center of rollers: 2610 mm (8'7")
Track gauge: 1990 mm (6'6")
Ground clearance: 440 mm (17")

Width of standard shoe: 500 mm (20")
Track shoe options:
600 mm (24")
700 mm (28")
770 mm (30")

Track gauge: 1990 mm (6'6")
Track width with 500 mm (20") shoes: 2490 mm (8'2")
Track width with 600 mm (24") shoes: 2590 mm
Track width with 700 mm (28") shoes: 2690 mm
Track width with 770 mm (30") shoes: 2760 mm

Number of shoes (each side): 41
Number of track rollers (each side): 6


TRACK SHOES AND GROUND PRESSURES

With medium stick 2250 mm (7'5").

Shoes 500 mm (20"): 0.38 kg/cm2 (5.40 psi)
Shoes 600 mm (24"): 0.33 kg/cm2 (4.69 psi)
Shoes 700 mm (28"): 0.29 kg/cm2 (4.12 psi)
Shoes 770 mm (30"): 0.26 kg/cm2 (3.70 psi)


OPERATING WEIGHT

With boom, 900 mm (39") bucket of 0.52 m3 (0.68 yd3) capacity.

With medium stick 2250 mm (7'5"):
Shoes 500 mm (20"): 11 100 kg (24,400 lb)
Shoes 600 mm (24"): 11 300 kg (24,900 lb)
Shoes 700 mm (28"): 11 500 kg (25,400 lb)
Shoes 770 mm (30"): 11 650 kg (25,700 lb)

With long stick 2800 mm (9'2"):
Shoes 500 mm (20"): 11 200 kg (24,600 lb)
Shoes 600 mm (24"): 11 400 kg (25,100 lb)
Shoes 700 mm (28"): 11 600 kg (25,600 lb)
Shoes 770 mm (30"): 11 750 kg (25,900 lb)


WORKING RANGES with long stick 2250 mm (7'5")

Maximum digging depth: 5050 mm (16'7")
Maximum vertical wall digging depth: 4450 mm (14'7")

Maximum reach at ground level: 7 570 mm (24'10")
Maximum cutting height: 7795 mm (25'7")
Maximum loading height: 5440 mm (17'10")
Digging forcess:
Stick: 5400 kg (11,910 lb)
Bucket: 7500 kg (16,535 lb)


WORKING RANGES with long stick 2800 mm (9'2")

Maximum digging depth: 5600 mm (18'4")
Maximum vertical wall digging depth: 4965 mm (16'3")

Maximum reach at ground level: 8 100 mm (26'7")
Maximum cutting height: 8120 mm (26'8")
Maximum loading height: 5765 mm (18'11")
Digging forcess:
Stick: 4700 kg (10,360 lb)
Bucket: 7500 kg (16,535 lb)


BUCKETS

Standard bucket: 0.52 m3 (0.68 yd3)
Bucket capacities: 0.32 m3 (0.42 yd3) - 0.63 m3 (0.82 yd3)


Caterpillar 311 crawler excavator loading a truck with soil and pieces of concrete
Caterpillar 311 crawler excavator loading a truck with soil and pieces of concrete.
Location: El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 1920 x 1080 pixels, 1.04 MB
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)
Changes of the photo: The image was extracted from the original photo.
The original photo is under the photo.


Caterpillar 311 excavator at work
Caterpillar 311 excavator at work.
Pinas Municipal Government began the construction of a modern and spacious recreational park in the parish Moromoro, El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 4496 x 3000 pixels, 5.25 MB
Camera model: NIKON D7100
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 311 crawler excavator and a tipper
CAT 311 crawler excavator and a tipper.
Location: El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 1920 x 1080 pixels, 1.49 MB
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)
Changes of the photo: The image was extracted from the original photo.
The original photo is under the photo.


CAT 311 excavator at work
CAT 311 excavator at work.
Pinas Municipal Government began the construction of a modern and spacious recreational park in the parish Moromoro, El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 4496 x 3000 pixels, 5.50 MB
Camera model: NIKON D7100
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 311 crawler excavator loading a truck with pieces of concrete and soil
CAT 311 crawler excavator loading a truck with pieces of concrete and soil.
Location: El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 2718 x 1871 pixels, 2.84 MB
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)
Changes of the photo: The image was extracted from the original photo and color corection.
The original photo is under the photo.


CAT 311 excavator at work
CAT 311 excavator at work.
Pinas Municipal Government began the construction of a modern and spacious recreational park in the parish Moromoro, El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 4496 x 3000 pixels, 4.78 MB
Camera model: NIKON D7100
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 311 crawler excavator is working
CAT 311 crawler excavator is working.
Location: El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 2718 x 2017 pixels, 2.99 MB
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)
Changes of the photo: The image was extracted from the original photo.
The original photo is under the photo.


CAT 311 crawler excavator at work
CAT 311 crawler excavator at work.
Pinas Municipal Government began the construction of a modern and spacious recreational park in the parish Moromoro, El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 4496 x 3000 pixels, 5.50 MB
Camera model: NIKON D7100
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 311 crawler hydraulic excavator is working
CAT 311 crawler hydraulic excavator is working.
Location: El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 1879 x 1309 pixels, 1.73 MB
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)
Changes of the photo: The image was extracted from the original photo and color corection.
The original photo is under the photo.


The crawler excavator at work
The crawler excavator at work.
Pinas Municipal Government began the construction of a modern and spacious recreational park in the parish Moromoro, El Oro Province, Ecuador.
Taken on: 14 January 2014
Size of the photo: 4496 x 3000 pixels, 5.34 MB
Camera model: NIKON D7100
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)






CATERPILLAR - CRAWLER EXCAVATORS



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