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CATERPILLAR - CRAWLER EXCAVATORS



CAT 312



TECHNICAL DATA AND PHOTOS




Model: 311


Type: Crawler hydraulic excavator.

Years of production: 1993 - 1997

Manufacturer: CATERPILLAR


ENGINE

Model: CAT 3064
Type: In-line, four-stroke, turbocharged diesel engine.
Cooling: water-cooled
Net power:
Caterpillar: 63 kW (84 HP, 85 PS) at 1900 rpm
EEC 80/1269: 63 kW (84 HP, 85 PS) at 1900 rpm
ISO 9249: 63 kW (84 HP, 85 PS) at 1900 rpm
SAE J1349 (JAN90): 62 kW (83 HP, 84 PS) at 1900 rpm
Gross power:
ISO 3046-2: 68 kW (91 HP, 92 PS) at 1900 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 118 L/min (2 x 31 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): 151 L (40 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) 2.5 L (0.66 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: 10 600 kg (23,370lb)


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: 12.0 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: 7600 mm (24'11")


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: 3490 mm (11'5")
Length to center of rollers: 2780 mm (9'1")
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): 43
Number of track rollers (each side): 6


TRACK SHOES AND GROUND PRESSURES

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

Shoes 500 mm (20"): 0.39 kg/cm2 (5.55 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"): 0.27 kg/cm2 (3.84 psi)


OPERATING WEIGHT

With boom and bucket of 0.52 m3 (0.68 yd3) capacity.

With medium stick 2500 mm (8'2"):
Shoes 500 mm (20"): 12 000 kg (26,500 lb)
Shoes 600 mm (24"): 12 250 kg (27,000 lb)
Shoes 700 mm (28"): 12 500 kg (27,500 lb)
Shoes 770 mm (30"): 12 600 kg (27,800 lb)

With long stick 3000 mm (9'10"):
Shoes 500 mm (20"): 12 100 kg (26,700 lb)
Shoes 600 mm (24"): 12 350 kg (27,200 lb)
Shoes 700 mm (28"): 12 600 kg (27,700 lb)
Shoes 770 mm (30"): 12 700 kg (28,000 lb)


WORKING RANGES with long stick 2500 mm (8'2")

Maximum digging depth: 5550 mm (18'3")
Maximum vertical wall digging depth: 4970 mm (16'4")

Maximum reach at ground level: 8175 mm (26'10")
Maximum cutting height: 8475 mm (27'10")
Maximum loading height: 6095 mm (20'0")
Digging forcess:
Stick: 5900 kg (13,010 lb)
Bucket: 7900 kg (17,420 lb)


WORKING RANGES with long stick 3000 mm (9'10")

Maximum digging depth: 6050 mm (19'10")
Maximum vertical wall digging depth: 5340 mm (17'6")

Maximum reach at ground level: 8625 mm (28'4")
Maximum cutting height: 8695 mm (28'6")
Maximum loading height: 6330 mm (20'9")
Digging forcess:
Stick: 5300 kg (11,685 lb)
Bucket: 7900 kg (17,420 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 312 crawler hydraulic excavator
Caterpillar 312 crawler hydraulic excavator.
Location: El Oro Province, Ecuador.
Taken on: 1 March 2013
Size of the photo: 1920 x 1080 pixels, 1.76 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 correction.
The original photo is under the photo.


Caterpillar 312 excavator loading wet soil into a dump truck
Caterpillar 312 excavator loading wet soil into a dump truck.
Location: El Oro Province, Ecuador.
Taken on: 1 March 2013
Size of the photo: 1920 x 1080 pixels, 1.74 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 correction.
The original photo is under the photo.


CAT 312 excavator loading wet soil into a dump truck
CAT 312 excavator loading wet soil into a dump truck.
Gutter cleaning on Av. 聲gel Salvador Ochoa, El Oro Province, Ecuador.
Taken on: 1 March 2013
Size of the photo: 4288 x 2848 pixels, 3.03 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



Caterpillar 312 crawler hydraulic excavator and two men
Caterpillar 312 crawler hydraulic excavator and two men.
Location: El Oro Province, Ecuador.
Taken on: 1 March 2013
Size of the photo: 1777 x 1082 pixels, 1.14 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.


Earthmoving machines working on Av. 聲gel Salvador Ochoa, El Oro Province, Ecuador
Earthmoving machines working on Av. 聲gel Salvador Ochoa, El Oro Province, Ecuador.
Taken on: 1 March 2013
Size of the photo: 4288 x 2848 pixels, 2.95 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



Caterpillar 312 crawler hydraulic excavator is working
Caterpillar 312 crawler hydraulic excavator is working.
Location: El Oro Province, Ecuador.
Taken on: 1 March 2013
Size of the photo: 1851 x 1198 pixels, 1.62 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.


Canal cleaning on Av. 聲gel Salvador Ochoa, El Oro Province, Ecuador
Canal cleaning on Av. 聲gel Salvador Ochoa, El Oro Province, Ecuador.
Taken on: 1 March 2013
Size of the photo: 4288 x 2848 pixels, 3.01 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312 crawler hydraulic excavator at work
CAT 312 crawler hydraulic excavator at work.
Location: El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 1920 x 1080 pixels, 1.48 MB
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)
Changes of the photo: The image was extracted from the original.
The original photo is under the photo.


Caterpillar 312 excavator working in El Oro Province, Ecuador
Caterpillar 312 excavator working in El Oro Province, Ecuador.
Construction of retaining walls in la Cdla. 12 de Octubre, El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 4288 x 2848 pixels, 3.03 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312
CAT 312 crawler hydraulic excavator at work.
Location: El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 2034 x 1585 pixels, 2.03 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 312 excavator working in El Oro Province, Ecuador
Caterpillar 312 excavator working in El Oro Province, Ecuador.
Construction of retaining walls in la Cdla. 12 de Octubre, El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 4288 x 2848 pixels, 3.08 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312 crawler hydraulic excavator loading a dump truck
CAT 312 crawler hydraulic excavator loading a dump truck.
Location: El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 3187 x 2026 pixels, 3.95 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 312 excavator working in El Oro Province, Ecuador
Caterpillar 312 excavator working in El Oro Province, Ecuador.
Construction of retaining walls, en la Cdla. 12 de Octubre, El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 4288 x 2848 pixels, 3.00 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312 crawler hydraulic excavator loading a tipper
CAT 312 crawler hydraulic excavator loading a tipper.
Location: El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 1624 x 1145 pixels, 1.37 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.


Construction of a retaining wall in la Cdla. 12 de Octubre, El Oro Province, Ecuador
Construction of a retaining wall in la Cdla. 12 de Octubre, El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 4288 x 2848 pixels, 3.12 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312 crawler hydraulic excavator loading a tipper
CAT 312 crawler hydraulic excavator loading a tipper.
Location: El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 1777 x 1172 pixels, 1.43 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.


Construction of a retaining wall in la Cdla. 12 de Octubre, El Oro Province, Ecuador
Construction of a retaining wall in la Cdla. 12 de Octubre, El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 4288 x 2848 pixels, 3.03 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312 crawler excavator is working
CAT 312 crawler excavator is working.
Location: El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 1496 x 1743 pixels, 1.83 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.


Construction of a retaining wall in la Cdla. 12 de Octubre, El Oro Province, Ecuador
Construction of a retaining wall in la Cdla. 12 de Octubre, El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 4288 x 2848 pixels, 3.09 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



Caterpillar 312 crawler excavator
Caterpillar 312 crawler excavator.
Location: El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 1344 x 1019 pixels, 883 kB
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.


Construction works in la Cdla. 12 de Octubre, El Oro Province, Ecuador
Construction works in la Cdla. 12 de Octubre, El Oro Province, Ecuador.
Taken on: 4 April 2013
Size of the photo: 4288 x 2848 pixels, 3.09 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312 crawler excavator loading a tipper
CAT 312 crawler excavator loading a tipper.
Location: El Oro Province, Ecuador.
Taken on: 9 April 2013
Size of the photo: 1247 x 910 pixels, 825 kB
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.


Construction works - slope protection wall on Calle Ocho de Noviembre and Zaruma, El Oro Province, Ecuador
Construction works - slope protection wall on Calle Ocho de Noviembre and Zaruma, El Oro Province, Ecuador.
Taken on: 9 April 2013
Size of the photo: 4288 x 2848 pixels, 3.07 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)



CAT 312 crawler excavator
CAT 312 crawler excavator.
Location: El Oro Province, Ecuador.
Taken on: 15 April 2013
Size of the photo: 3209 x 2041 pixels, 4.18 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 correction.
The original photo is under the photo.


CAT 312 crawler excavator working
CAT 312 crawler excavator working in la Quebrada la Florida 2, El Oro Province, Ecuador.
Taken on: 15 April 2013
Size of the photo: 4288 x 2848 pixels, 3.01 MB
Camera model: Nikon D90
Author of the photo (source): MunicipioPinas
License: (CC BY-SA 2.0)






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