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CATERPILLAR - CRAWLER EXCAVATORS



CAT 308E CR SB



TECHNICAL DATA AND PHOTOS




Model: 308E CR SB

E = Series E
CR = Compact Radius
SB = Swing Boom


Type: Compact hydraulic excavator with swing boom

Years of production: 2011 - 2013

Manufacturer: CATERPILLAR


ENGINE

Model: Cat C3.3B
Type: In-line, four-stroke diesel engine.
Net power ISO 9249: 48.5 kW (65 hp) at 2400 rpm
Net power EEC 80/1269: 48.5 kW (65 hp) at 2400 rpm
Gross power ISO 14396: 49.7 kW (66.6 hp)
Displacement: 3330 cm3 (203.2 in3)
Number of cylinders: 4
Bore: 94 mm (3.7 in)
Stroke: 120 mm (4.7 in)
Engine emissions: U.S. EPA Tier 4 Interim and EU Stage IIIA.


HYDRAULIC SYSTEM

Pump flow: 150 L/min (39.6 US gal/min) at 2000 rpm
Operating pressure travel: 32 000 kPa (4,641 psi)
Operating pressure swing: 24 000 kPa (3,481 psi)
Operating pressure equipment: 28 000 kPa (4,061 psi)
Auxiliary circuit primary: 128 L/min (33.8 US gal/min)
(280 bar/4,061 psi)
Auxiliary circuit secondary: 64 L/min (16.9 US gal/min)
(280 bar/4,061 psi)
Digging force stick (standard): 40.1 kN (9,015 lbf)
Digging force stick (long): 35.1 kN (7,891 lbf)
Digging force bucket: 60.2 kN (13,534 lbf)


FLUID CAPACITIES

Cooling system: 14 L (3.7 US gal)
Engine oil: 11.2 L (3.0 US gal)
Hydraulic tank: 82 L (21.7 US gal)
Hydraulic system: 94 L (24.8 US gal)
Fuel tank: 125 L (33 US gal)


TRAVEL SYSTEM AND UNDERCARRIAGE

Each track is driven by one independent 2-speed motor.
Drive modules are integrated into the roller frame for total protection.
Straight line travel when tracking and operating the front linkage simultaneously.

Maximum traction force:
High speed: 64.5 kN (14,500 lbf)
Low speed: 37.4 kN (8,408 lbf)
Gradeability (maximum): 30
Ground pressure: 36.3 kPa (5.26 psi)

Travel speed: High: 5.26 km/h (3.26 mph) Low: 3.32 km/h (2.06 mph)

Rubber track or steel track with rubber pads.


OPERATING WEIGHT

Operating weight with cab, rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines.

Operating weight: 8333 kg (18,371 lb)

Weight varies depending on machine confi guration.


DIMENSIONS

With Standard Stick

Transport length: 6380 mm (20'11")
Boom height in transport position: 2280 mm (7'6")
Height to top of cab: 2550 mm (8'4")
Tail swing radius with standard counterweight: 1450 mm (4'9")
Counterweight clearance: 735 mm (2'5")
Track length: 2903 mm (9'6")
Track width: 2320 mm (7'7")
Track shoes width: 450 mm (1'6")

With Long Stick

Transport length: 6340 mm (20'10")
Boom height in transport position: 2230 mm (7'4")
Height to top of cab: 2550 mm (8'4")
Tail swing radius with standard counterweight: 1450 mm (4'9")
Counterweight clearance: 735 mm (2'5")
Track length: 2903 mm (9'6")
Track width: 2320 mm (7'7")
Track shoes width: 450 mm (1'6")



WORKING RANGES:
With Standard Stick

Maximum digging depth: 4150 mm (13'7")
Maximum reach at ground level: 6820 mm (22'9")
Maximum reach: 7020 mm (23'0")
Maximum digging height: 6640 mm (21'9")
Maximum loading height: 4670 mm (15'4")

With Long Stick

Maximum digging depth: 4690 mm (15'5")
Maximum reach at ground level: 7350 mm (24'1")
Maximum reach: 7540 mm (24'9")
Maximum digging height: 6990 mm (22'11")
Maximum loading height: 5010 mm (16'5")


BLADE

Width: 2320 mm (91.3 in)
Height: 450 mm (17.7 in)
Dig depth: 360 mm (14.2 in)
Lift height: 380 mm (15.0 in)
Lift height: 420 mm (1'5")
Dig depth: 320 mm (1'1")


LIFT CAPACITIES AT GROUND LEVEL
Lifting capacities are for standard stick without bucket.

Lift Point Radius 4000 mm (13'1")

Over Front

Blade down: 3650 kg (8,046 lb)
Blade up: 1840 kg (4,056 lb)

Over Side

Blade down: 1710 kg (3,770 lb)
Blade up: 1530 kg (3,373 lb)

Lift Point Radius 6050 mm (19'10")

Over Front

Blade down: 1880 kg (4,144 lb)
Blade up: 970 kg (2,138 lb)

Over Side

Blade down: 920 kg (2,028 lb)
Blade up: 820 kg (1,808 lb)

The above loads are consistent with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity.


CAT 308E CR SB crawler excavator with compact radius and swing boom
CAT 308E CR SB crawler excavator with compact radius and swing boom.
CQ032 - Yard services building - excavating various depth pits, East Side Access, New York City, USA.
Taken on: 6 May 2014
Size of the photo: 3451 2352 pixels, 3.72 MB
Source of the photo: MTA Capital Construction Mega Projects
License: (CC BY 2.0)
The image was extracted from the original photo.
The original photo is under the photo.


CAT 308E CR SB (CR = Compact Radius, SB = Swing Boom)
CAT 308E CR SB (CR = Compact Radius, SB = Swing Boom).
CQ032 - Yard services building - excavating various depth pits, East Side Access, New York City, USA.
Taken on: 6 May 2014
Camera model: Nikon Coolpix AW110
Size of the photo: 4608 3456 pixels, 3.17 MB
Source of the photo: MTA Capital Construction Mega Projects
License: (CC BY 2.0)





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