Caterpillar 631E Series II Motor Scraper Specs
Overview
The Caterpillar 631E Series II 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 450 hp, operating weight of 97,459 lb, capacity of 31.0 yd³, travel speed of 33.0 mph, fuel capacity of 215.1 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 631E Series II Motor Scraper against similar motor scraper models by power, weight, capacity, dimensions, speed, and other technical values.
Key Specifications
Operating Weight
97,459
lb
Net Power
450
hp
Gross Power
490
hp
Rated Payload
75,001.30
lb
Full Specifications
89 specs
Dimensions
Capacity - Struck
21 yd³ / 16.06 m³
Front Of Tractor To Front Axle
132.25 in / 3,359 mm
Gross Power
490 hp / 365.4 kW
Height - Overall Shipping
168.75 in / 4,286 mm
Height - Scraper Blade Maximum
21.50 ft / 6.55 m
Height - Top Of Cab
12.19 ft / 3.72 m
Length - Overall Machine
573.25 in / 14,561 mm
Model
3408TA
Net Power
450 hp / 335.6 kW
Overall Height
14.08 ft / 4.29 m
Overall Length
47.77 in / 1,213 mm
Overall Width
12.93 ft / 3.94 m
Rated Payload
75,001 lb / 34,020 kg
Rear Axle - Rear Of Machine
95.75 in / 2,432 mm
Total Operating - Empty
97,466 lb / 44,210 kg
Total Operating - Loaded
172,459 lb / 78,226 kg
Wheel Base
28.78 in / 731 mm
Wheelbase
28.78 ft / 8.77 m
Width - Inside Of Bowl
134 in / 3,404 mm
Width - Outside Rear Tires
143.10 in / 3,635 mm
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
2.90 mph / 4.7 km/h
2 Forward
5.20 mph / 8.4 km/h
3 Forward
7.40 mph / 11.9 km/h
4 Forward
10 mph / 16.1 km/h
5 Forward
13.40 mph / 21.6 km/h
6 Forward
18.20 mph / 29.3 km/h
7 Forward
24.50 mph / 39.4 km/h
8 Forward
33.20 mph / 53.4 km/h
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
Caterpillar Net Power
490 hp / 365.4 kW
Compensator Settings - Cushion Hitch Circuit
2,300 psi / 158.6 bar
Cushion Hitch Circuit
10 gal/min / 37.9 L/min
Depth Of Cut - Maximum
17 ft / 5.18 m
Depth Of Spread - Maximum
18.80 ft / 5.73 m
Differential
36
Displacement
1,099 cu in / 18.0 L
Eec 80/1269
490
Ejector Cylinder Bore
8.30 in / 211 mm
Ejector Cylinder Stroke
74 in / 1,880 mm
Front Axle
65,201 lb / 29,575 kg
Front Axle Weight - Loaded
91,576 lb / 41,538 kg
Fuel Capacity
215.10 gal / 814.2 L
Ground Clearance - Maximum
21.50 ft / 6.55 m
Ground-Driven Secondary Steering System
52 gal/min / 196.8 L/min
Heaped Capacity
31 yd³ / 23.70 m³
Hyd. Penetration Force - 621g
57,375 lb / 26,025 kg
Hydraulic Output
96.20 gal/min / 364.2 L/min
Hydraulic Reservoir
50 gal / 189.3 L
Iso 9249
490
Max Depth Of Cut
17.30 ft / 5.27 m
Max Speed Forward
33 mph / 53.1 km/h
Net Power
450 hp / 335.6 kW
Operating Weight
97,459 lb / 44,207 kg
Rated Load
75,000
Rear Axle
32,259 lb / 14,632 kg
Rear Axle - Weight - Loaded
80,884 lb / 36,688 kg
Relief Valve - Implement Circuit
2,000 psi / 137.9 bar
Relief Valve - Steering Circuit
1,960 psi / 135.1 bar
Reverse
6.20
Sae J1349
485
Scraper Capacity - Heaped
31
Scraper Circuit
95 gal/min / 359.6 L/min
Scraper Shipping
51,939
Secondary Steering Circuit
77 gal/min / 291.5 L/min
Steering
Width - 180 Degrees Turn
Steering Circuit
105 gal/min / 397.5 L/min
Stroke
6 in / 152 mm
Struck Capacity
21.10 yd³ / 16.13 m³
Total Shipping
96,182
Tractor Engine
3,408
Tractor Shipping
44,243
Transmission
1 Forward
Wheel Coolant - Each
19.50
Width - 180 Degrees Turn
40.10 in / 1,019 mm
Width - Cut - To Router Bits
138.30 in / 3,513 mm
Hydraulics
Cutting Edge Thickness
1.40
Other
Cooling System
33 gal / 124.9 L
Crankcase
11.70 gal / 44.3 L
Final Drive - Each
7
Related Machines
Related Guides & Articles
Frequently Asked Questions
What is the operating weight of the Caterpillar 631E Series II Motor Scraper? +
The Caterpillar 631E Series II Motor Scraper has an operating weight of 97,459 lb (44,207 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 631E Series II Motor Scraper engine? +
The Caterpillar 631E Series II Motor Scraper produces 490 hp (365.4 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 631E Series II Motor Scraper compare to similar Motor Scraper models? +
You can compare the Caterpillar 631E Series II 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.