- Overall Length: 47.77 ft / 14560 mm
- Overall Width: 12.93 ft / 3940 mm
- Overall Height: 14.08 ft / 4290 mm
- Wheelbase: 28.78 ft / 8770 mm
Published dimensions and weight
Caterpillar 631E Series II
The Caterpillar 631E Series II is a 44.2 t-class motor scraper with a 450 hp engine.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale

01Dimensions referenceLength × width × height
02Operating Weight97459 lb44206.7 kg
03Selected published values90
Motor scrapers are commonly used to cut, load, haul and spread soil over medium-distance earthmoving cycles. Published rows for Caterpillar 631E Series II include published payload of 75001.3 lb / 34020 kg, published body capacity of 31 yd3 / 23.7 m3, published engine power of 490 hp / 365.4 kw. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Overall Length” field (47.77 ft / 14560 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Width” field (12.93 ft / 3940 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Height” field (14.08 ft / 4290 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Dimensions
Overall Length47.77 ft14560 mm
Overall Width12.93 ft3940 mm
Overall Height14.08 ft4290 mm
Wheelbase28.78 ft8770 mm
Length - Overall Machine573.25 in14560.55 mm
Rear Axle - Rear Of Machine95.75 in2432.06 mm
Wheel Base28.78 ft0.74 m
Width - Inside Of Bowl134 in3403.6 mm
Width - Outside Rear Tires143.1 in3634.74 mm
Width - Overall Machine155 in3937 mm
Width - Rear Tire Center Lines97 in2463.81 mm
Front Of Tractor To Front Axle132.25 in3359.15 mm
Width - Tractor137 in3479.8 mm
Height - Overall Shipping168.75 in4286.25 mm
Height - Scraper Blade Maximum21.5 in546.1 mm
Height - Top Of Cab12.19 in0.31 m
Tractor Engine
Model3408TA3408TA
Gross Power490 hp365.4 kw
Net Power450 hp335.6 kw
Displacement1099 cu in18.1 L
Caterpillar Net Power490 hp365.4 kw
Iso 9249490 hp365.4 kw
Eec 80/1269490 hp365.4 kw
Sae J1349485 hp361.7 kw
Bore5.4 in137.2 mm
Stroke6 in152.4 mm
Engine
Tractor Engine3408E3408E
Operational
Fuel Capacity215.1 gal814 L
Transmission
Max Speed Forward33 mph53 km/h
Reverse6.2 mile/h6.2 mile/h
1 Forward2.9 mph4.7 km/h
2 Forward5.2 mph8.4 km/h
3 Forward7.4 mph12 km/h
4 Forward10 mph16.1 km/h
5 Forward13.4 mph21.6 km/h
6 Forward18.2 mph29.3 km/h
7 Forward24.5 mph39.5 km/h
8 Forward33.2 mph53.5 km/h
Steering
Width - 180 Degrees Turn40.1 ft12.3 m
Steering Angle - Right90 degrees90 degrees
Steering Angle - Left85 degrees85 degrees
Hydraulic Output96.2 gal/min96.2 gal/min
Ground-Driven Secondary Steering System52 gal/min52 gal/min
Weights
Total Operating - Empty97466.4 lb44210 kg
Operating Weight97459 lb44206.7 kg
Bowl
Rated Payload75001.3 lb34020 kg
Heaped Capacity31 yd323.7 m3
Struck Capacity21.1 yd316.1 m3
Max Depth Of Cut17.3 in437 mm
Width Of Cut11.6 ft3510 mm
Hydraulics
Bowl Cylinder Bore7.3 in184.2 mm
Bowl Cylinder Stroke34.4 in873.8 mm
Steering Circuit105 gal/min105 gal/min
Scraper Circuit95 gal/min95 gal/min
Cushion Hitch Circuit10 gal/min10 gal/min
Relief Valve - Steering Circuit1960 psi1960 psi
Relief Valve - Implement Circuit2000 psi2000 psi
Compensator Settings - Cushion Hitch Circuit2300.01 psi2300.01 psi
Ejector Cylinder Bore8.3 in210.9 mm
Ejector Cylinder Stroke74 in1879.6 mm
Secondary Steering Circuit77 gal/min77 gal/min
Apron Cylinder Bore8.3 in209.6 mm
Apron Cylinder Stroke28.6 in726.5 mm
Scraper Bowl
Width - Cut - To Router Bits138.3 in3511.6 mm
Rated Load75000 lb34019.5 kg
Capacity - Struck21 yd316.1 m3
Depth Of Cut - Maximum17 in431.8 mm
Ground Clearance - Maximum21.5 in546.1 mm
Cutting Edge Thickness1.4 in35.1 mm
Depth Of Spread - Maximum18.8 in476.3 mm
Scraper Capacity - Heaped31 yd323.8 m3
Hyd. Penetration Force - 621g57375 lb26024.9 kg
Apron Closure Force38250 lb17350 kg
Apron Opening79 in2006.6 mm
Service Refill Capacities - Tractor
Transmission33 gal125 L
Differential36 gal136.3 L
Final Drive - Each7 gal26.5 L
Cooling System33 gal125 L
Hydraulic Reservoir50 gal189.3 L
Crankcase11.7 gal44.3 L
Wheel Coolant - Each19.5 gal73.9 L
Weights - Standard, Tandem
Total Shipping96182 lb43627.5 kg
Tractor Shipping44243 lb20068.3 kg
Scraper Shipping51939 lb23559.2 kg
Total Operating - Empty97459 lb44206.7 kg
Front Axle65201 lb29574.7 kg
Rear Axle32259 lb14632.5 kg
Total Operating - Loaded172459 lb78226.1 kg
Front Axle Weight - Loaded91576 lb41538.2 kg
Rear Axle - Weight - Loaded80884 lb36688.4 kg
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Manufacturer-published specifications.