Overview
The Caterpillar 637G Motor Scraper is a motor scraper listed in the Heavy Equipment Hub equipment database with structured specifications for comparison, research, and machine selection. Key specification points include engine power of 270 hp, operating weight of 114,744 lb, capacity of 31 yd3, travel speed of 34.1 mph, fuel capacity of 335.0 gal and hydraulic capacity of 50.0 gal. This model can be reviewed for high-volume earthmoving, haul road production, cut-and-fill work, and scraper fleet comparison. Use the full specifications table to compare the Caterpillar 637G Motor Scraper against similar motor scraper models by power, weight, capacity, dimensions, speed, and other technical values.
Key Specifications
Operating Weight
114,743.90
lb
Gross Power
270
hp
Rated Payload
75,000
lb
Overall Length
47.78
in
Full Specifications
133 specs
Dimensions
Axle To Vertical Hitch Pin
21.60 in / 549 mm
Bail Length - Maximum (Push-Pull)
195.30 in / 4,961 mm
Capacity - Struck
24 yd³ / 18.35 m³
Differential Fluid Capacity
40.50 gal / 153.3 L
Displacement
1,099 cu in / 18.0 L
Extended Push Block (Push-Pull)
108 lb / 49 kg
Front Axel - Loaded
92,975 lb / 42,173 kg
Front Of Tractor To Front Axle
135.25 in / 3,435 mm
Gross Power
515 hp / 384.0 kW
Ground Clearance - Tractor
26.20 ft / 7.99 m
Height - Overall Shipping
168.75 in / 4,286 mm
Height - Scraper Blade Maximum
21.50 ft / 6.55 m
Height - Top Of Cab
12.20 ft / 3.72 m
Height - Top Of Scraper
13.71 ft / 4.18 m
Height to Top of Cab
12.19 ft / 3.72 m
Length - Overall Machine
573.40 in / 14,564 mm
Model
3408E
Overall Height
14.07 ft / 4.29 m
Overall Length
47.78 in / 1,214 mm
Overall Width
12.92 ft / 3.94 m
Rated Payload
75,000 lb / 34,019 kg
Rear Axle - Rear Of Machine
95.75 in / 2,432 mm
Total Operating - Empty
114,745 lb / 52,047 kg
Total Operating - Loaded
189,745 lb / 86,067 kg
Tractor Ground Clearance
2.19 ft / 0.67 m
Tread - Scraper
8.07
Tread - Tractor
8.07
Wheel Base
28.77 in / 731 mm
Wheelbase
28.77 ft / 8.77 m
Width - Inside Of Bowl
134 in / 3,404 mm
Width - Outside Bowl - Shipping Width
154 in / 3,912 mm
Width - Outside Rear Tires
143.20 in / 3,637 mm
Width - Overall
12.93 ft / 3.94 m
Width - Overall Machine
155 in / 3,937 mm
Width - Rear Tire Center Lines
97 in / 2,464 mm
Width - Tractor
137 in / 3,480 mm
Width Of Cut
11.60 ft / 3.54 m
Engine
1 Forward
3.40 mph / 5.5 km/h
2 Forward
6.20 mph / 10.0 km/h
3 Forward
7.60 mph / 12.2 km/h
4 Forward
10.30 mph / 16.6 km/h
5 Forward
13.80 mph / 22.2 km/h
6 Forward
18.70 mph / 30.1 km/h
7 Forward
25.20 mph / 40.6 km/h
8 Forward
34.10 mph / 54.9 km/h
Alternator Supplied Amperage
75 A
Apron Closure Force
38,250 lb / 17,350 kg
Apron Cylinder Bore
8.30 in / 211 mm
Apron Cylinder Stroke
28.60 in / 726 mm
Apron Opening
79
Bore
5.40 in / 137 mm
Bowl Cylinder Bore
7.30 in / 185 mm
Bowl Cylinder Stroke
34.40 in / 874 mm
Compensator Settings - Cushion Hitch Circuit
2,320 psi / 160.0 bar
Cooling System Fluid Capacity
52 gal / 196.8 L
Cushion Hitch Circuit
9 gal/min / 34.1 L/min
Depth Of Cut - Maximum
17.20 ft / 5.24 m
Depth Of Spread - Maximum
18.90 ft / 5.76 m
Differential
3.20
Displacement
538 cu in / 8.8 L
Ejector Cylinder Bore
8.30 in / 211 mm
Ejector Cylinder Stroke
74 in / 1,880 mm
Engine Oil Fluid Capacity
18.90 gal / 71.5 L
Front Axle
67,700 lb / 30,708 kg
Front Axle - Empty
67,700 lb / 30,708 kg
Front Axle - Loaded
98,139 lb / 44,515 kg
Front Axle Weight - Loaded
96,503 lb / 43,773 kg
Fuel Capacity
335 gal / 1,268.1 L
Gross Power
270 hp / 201.3 kW
Gross Power - Gear 1
274 hp / 204.3 kW
Gross Power - Gears 1-2
480 hp / 357.9 kW
Gross Power - Gears 2-4
299 hp / 223.0 kW
Gross Power - Gears 3-8
519 hp / 387.0 kW
Ground Clearance - Maximum
21.50 ft / 6.55 m
Heaped Capacity
31 yd³ / 23.70 m³
Hyd. Penetration Force - 621g
81,000 lb / 36,741 kg
Hydraulic Output
100 gal/min / 378.5 L/min
Hydraulic Reservoir
50.20 gal / 190.0 L
Hydraulic System Fluid Capacity
50 gal / 189.3 L
Length - Overall
50.75 in / 1,289 mm
Max Depth Of Cut
17.20 ft / 5.24 m
Max Speed Forward
34.10 mph / 54.9 km/h
Max Speed Reverse
6.20 mph / 10.0 km/h
Model
3306
Net Power - Gear 1
249 hp / 185.7 kW
Net Power - Gears 1-2
450 hp / 335.6 kW
Net Power - Gears 2-4
274 hp / 204.3 kW
Net Power - Gears 3-8
485 hp / 361.7 kW
Number of Forward Gears
8
Number of Reverse Gears
1
Operating Voltage
24 V
Operating Weight
114,744 lb / 52,047 kg
Operating Weight - Empty - Approximate
118,909 lb / 53,936 kg
Operating Weight - Loaded - Approximate
194,909 lb / 88,409 kg
Rated Load
76,000
Rear Axle
47,044 lb / 21,339 kg
Rear Axle - Empty
47,045 lb / 21,339 kg
Rear Axle - Loaded
96,770 lb / 43,894 kg
Rear Axle - Weight - Loaded
100,441 lb / 45,559 kg
Relief Valve - Implement Circuit
2,030 psi / 140.0 bar
Relief Valve - Steering Circuit
1,987 psi / 137.0 bar
Reverse
6.20
Scraper Capacity - Heaped
50
Scraper Circuit
91 gal/min / 344.5 L/min
Scraper Engine
9
Scraper Shipping
46,231
Secondary Steering Circuit
100 gal/min / 378.5 L/min
Steering
Width - 180 Degrees Turn
Steering Circuit
100 gal/min / 378.5 L/min
Stroke
6 in / 152 mm
Struck Capacity
21 yd³ / 16.06 m³
Total Shipping
112,760
Tractor Engine
18
Tractor Shipping
66,529
Transmission
1 Forward
Transmission Fluid Capacity
45.70 gal / 173.0 L
Wheel Coolant - Each
19.80
Wheel Coolant Fluid Capacity - Each
39 gal / 147.6 L
Width - 180 Degrees Turn
40 in / 1,016 mm
Width - 180 Degrees Turn - Right
40.10 in / 1,019 mm
Width - Cut - To Router Bits
138.30 in / 3,513 mm
Windshield Washer
1.50
Hydraulics
Cutting Edge Thickness
1.20
Other
180 Degrees Curb-To-Curb Turning Width
45 in / 1,143 mm
Fuel Tank - 637g
335 gal / 1,268.1 L
Hyd. Penetration Force - 637g
81,000 lb / 36,741 kg
Scraper Capacity - Struck
41
Top Speed - Loaded
33 lb / 15 kg
Transmission
19
Transmission - 637g
1
Cooling System
20 gal / 75.7 L
Crankcase
7.90 gal / 29.9 L
Final Drive - Each
5
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Frequently Asked Questions
What is the operating weight of the Caterpillar 637G Motor Scraper? +
The Caterpillar 637G Motor Scraper has an operating weight of 114,744 lb (52,047 kg). This places it in a class suited for motor scraper applications where ground pressure and transport weight are key considerations.
How powerful is the Caterpillar 637G Motor Scraper engine? +
The Caterpillar 637G Motor Scraper produces 515 hp (384.0 kW) of engine power. This output is typical for its weight class and designed to handle demanding Motor Scraper work cycles efficiently.
How does the Caterpillar 637G Motor Scraper compare to similar Motor Scraper models? +
You can compare the Caterpillar 637G Motor Scraper side by side with any other model using the Heavy Equipment Hub compare tool. Key comparison points include engine power, operating weight, digging depth, hydraulic flow, and overall dimensions.