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CATERPILLAR - SCRAPERS




CATERPILLAR 627E (7CG, 1990-1993)



TECHNICAL DATA AND PHOTOS




Model: CAT 627E

Product identification number: 7CG

Year of production: 1990-1993

Manufacturer: Caterpillar Inc.

Type: Two-engine scraper.


TRACTOR ENGINE:

Model: CAT 3406B
Type: 4-stroke cycle turbocharged diesel engine
Gross power: 258.8 kW (347 hp) at 1900 rpm
Flywheel power: 246.2 kW (330 hp) at 1900 rpm
Rated engine RPM: 1900 rpm
Number of cylinders: 6
Displacement: 14.6 L (893 in3)



SCRAPER ENGINE:

Model: CAT 3306
Type: 4-stroke cycle turbocharged diesel engine
Gross power: 185 kW (246 hp) at 2200 rpm
Flywheel power: 168 kW (225 hp) at 2200 rpm
Rated engine RPM: 2200 rpm
Number of cylinders: 6
Displacement: 10.5 L (638 in3)
Bore: 121 mm (4.75 in)
Stroke: 152 mm (6 in)



FLUID CAPACITIES:

Crankcase - tractor: 27 L (7.1 US gal)
Crankcase - scraper: 27 L (7.1 US gal)
Cooling system - tractor: 76 L (20.1 US gal)
Cooling system - scraper: 76 L (20.1 US gal)
Transmission - tractor: 83 L (21.9 US gal)
Transmission - scraper: 72 L (19.0 US gal)
Differential - tractor: 132 L (34.9 US gal)
Differential - scraper: 11 L (2.9 US gal)
Final drive (each side) - tractor: 13 L (3.4 US gal)
Final drive (each side) - scraper: 19 L (5.0 US gal)
Hydraulic reservoir - tractor: 140 L (37.0 US gal)
Hydraulic reservoir - scraper: 55 L (14.5 US gal)
Wheel coolant (each) - tractor: 45 L (11.9 US gal)
Wheel coolant (each) - scraper: 45 L (11.9 US gal)
Fuel tank - tractor: - -
Fuel tank - scraper: 985 L (260 US gal)


TRAVEL SPEEDS:

Travel speeds in each gear at 2100 RPM:
First: 5.0 km/h (3.1 mph)
Second: 9.0 km/h (5.6 mph)
Third: 11.4 km/h (7.1 mph)
Fourth: 15.4 km/h (9.6 mph)
Fifth: 20.8 km/h (12.9 mph)
Sixth: 28.2 km/h (17.5 mph)
Seventh: 38.0 km/h (23.6 mph)
Eighth: 51.3 km/h (31.9 mph)
Reverse: 9.2 km/h (5.7 mph)


DIMENSIONS:

Wheelbase: 7 684 mm (252)
Length overall machine (standard, non Push-Pull): 12 890 mm (423)
Length maximum (Push-Pull): 15 147 mm
Height to top of exhaust of tractor engine: 3 558 mm (118)
Height to top of exhaust of scraper engine: 3 812 mm (126)
Width overall machine: 3 467 mm (115)
Width tractor: 2 980 mm (99)
Width inside of bowl: 2 946 mm (98)
Front of tractor to front axle (standard, non Push-Pull): 3 058.5 mm (100)
Front of tractor to front axle - maximum (Push-Pull): 4 658 mm (153)
Rear axle to rear of machine (standard, non Push-Pull): 2 148 mm (71)
Rear axle to rear of machine (Push-Pull): 2 805 mm (92)
Ground clearance tractor: 553 mm (110)
Height scraper blade maximum: 522 mm (19)


WEIGHTS:

Operating weight:

With ROPS canopy, full fuel tank and operator.

Empty:

Standard:

Front axle: 20 587 kg (45,395 lb)
Rear axle: 14 574 kg (32,136 lb)
Total: 35 161 kg (77,531 lb)

Push-Pull:

Front axle: 21 796 kg (48,051 lb)
Rear axle: 14 824 kg (32,682 lb)
Total: 36 620 kg (80,733 lb)


Loaded - based on 21 800 kg (48,000 lb) rared load:

Standard:

Front axle: 27 547 kg (60,729 lb)
Rear axle: 29 387 kg (64,786 lb)
Total: 56 934 kg (125,515 lb)

Push-Pull:

Front axle: 28 754 kg (63,391 lb)
Rear axle: 29 636 kg (65,335 lb)
Total: 58 390 kg (128,726 lb)


SCRAPER CAPACITY:

Struck, SAE rating: 10.7 m3 (14 yd3)
Heaped, SAE rating: 15.3 m3 (20 yd3)
Rated load: 21 800 kg (48,000 lb)



SCRAPER BOWL - OPERATING DATA:

Maximum depth of cut: 333 mm (13.1)

Width of cut (outside router bits): 3023 mm (911)

Cutting edge dimensions:

Standard:
Center section: 22 x 406 x 1430 mm
Each end section: 22 x 330 x 750 mm

Optional:
Center section: 29 x 406 x 1430 mm
Each end section: 29 x 330 x 750 mm

Maximum available hydraulic penetration force at cutting edge, empty: 215 kN (48,375 lb)

Maximum depth of spread: 522 mm (20.5)

Apron closure force with cutting edge fully raised and apron opened 300 mm (12): 107 kN (24,075 lb)

Apron opening - bowl 150 mm (6) off ground level: 1780 mm (510)


HYDRAULIC SYSTEM:

Hydraulic circuit is filtered, open-centered system. Vane-type pumps for scraper and steering:

Output at 2100 rpm:
Steering: 197 L/min (52 gpm)
Scraper: 267 L/min (70.5 gpm)
Cushion hitch at 1900 rpm: 34.8 L/min (9.2 gpm)
Optional supplemental steering at 1900 rpm: 140 L/min (37.0 gpm)
Relief valve setting:
Steering: 2250 psi (155 bar)
Implement: 2150 psi (138 bar)


TOP SPEED:

Top speed: 51.3 km/h (31.9 mph)


TYRES:

Standard:
33.25-29, 26 PR (E-3)

Optional:
29.5-29 Radial steer cord (E-2, E3)
29.5-29, 34 PR (E-3)
29.5-35 Radial steer cord
29.25-29 28 PR (E2, E3)
33.25-29 Radial steer cord (E-2, E3)


CAT 627E (7CG, 1990-1993) two-engine scraper of Rooney Earthmoving
CAT 627E (7CG, 1990-1993) two-engine scraper of Rooney Earthmoving.
Taken on: 22 January 2013
Size of the photo: 2190 1489 pixels, 2.10 MB
Source of the photo: John Welsh
License: (CC BY-SA 2.0)
Changes made: The image was extracted from the original photo.
The original photo is under this photo.


Caterpillar 627E (7CG, 1990-1993) two-engine scraper of Rooney Earthmoving
Caterpillar 627E (7CG, 1990-1993) two-engine scraper of Rooney Earthmoving
Taken on: 22 January 2013
Size of the photo: 3264 2448 pixels, 4.73 MB
Camera model: CASIO EX-Z9
Source of the photo: John Welsh
License: (CC BY-SA 2.0)


CAT 627E (7CG, 1990-1993), CAT 631E, 631C and 631D scraper
CAT 627E (7CG, 1990-1993), CAT 631E, 631C and 631D scraper.
Size of the photo: 960 540 pixels, 404 kB
Source of the photo: John Welsh
License: (CC BY-SA 2.0)





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