Caterpillar 631E II Scraper Specs

Category: Scrapers ➔
Manufacturer: Caterpillar ➔
Model: 631E II ➔

The Caterpillar 631E II Scraper is a heavy-duty machine designed for efficient earth-moving and material handling tasks. With a heaped capacity of 31 cubic yards and a maximum depth of cut of 17.3 inches, this scraper is built to handle large volumes of materials with ease. The powerful 490 horsepower engine and advanced hydraulic system ensure smooth operation and high performance, while the sturdy construction and precise engineering make it a reliable choice for demanding job sites. Below are detailed specifications of the Caterpillar 631E II Scraper for those looking for a robust and versatile earthmoving equipment solution.

Bowl

Caterpillar 631E II Scraper Bowl specifications
Heaped Capacity	31.00 cu yd (23.70 cu m)
Max Depth of Cut	17.30 in (43.94 cm)
Rated Payload	75,001.30 lbs (34,020.06 kg)
Struck Capacity	21.10 cu yd (16.13 cu m)
Width of Cut	11.60 ft (3.54 m)

Dimensions

Caterpillar 631E II Scraper Dimensions specifications
Front of Tractor to Front Axle	132.30 in (336.04 cm)
Height - Overall Shipping	168.80 in (428.75 cm)
Height - Scraper Blade Maximum	21.50 in (54.61 cm)
Height - Top of Cab	12.20 ft (3.72 m)
Length - Overall Machine	573.30 in (1,456.18 cm)
Overall Height	14.10 ft (4.30 m)
Overall Length	47.80 ft (14.57 m)
Overall Width	13.00 ft (3.96 m)
Rear Axle - Rear of Machine	95.80 in (243.33 cm)
Wheel Base	28.80 ft (8.78 m)
Wheelbase	28.80 ft (8.78 m)
Width - Inside of Bowl	134.00 in (340.36 cm)
Width - Outside Rear Tires	143.10 in (363.47 cm)
Width - Overall Machine	155.00 in (393.70 cm)
Width - Rear Tire Center Lines	97.00 in (246.38 cm)
Width - Tractor	137.00 in (347.98 cm)

Engine

Caterpillar 631E II Scraper Engine specifications
Tractor Engine	3408E

Hydraulic System

Caterpillar 631E II Scraper Hydraulic System specifications
Apron Cylinder Bore	8.30 in (21.08 cm)
Apron Cylinder Stroke	28.60 in (72.64 cm)
Bowl Cylinder Bore	7.30 in (18.54 cm)
Bowl Cylinder Stroke	34.40 in (87.38 cm)
Compensator Settings - Cushion Hitch Circuit	2300.01 psi
Cushion Hitch Circuit	10.00 gpm (37.85 lpm)
Ejector Cylinder Bore	8.30 in (21.08 cm)
Ejector Cylinder Stroke	74.00 in (187.96 cm)
Relief Valve - Implement Circuit	2000 psi
Relief Valve - Steering Circuit	1960 psi
Scraper Circuit	95.00 gpm (359.58 lpm)
Secondary Steering Circuit	77.00 gpm (291.45 lpm)
Steering Circuit	105.00 gpm (397.43 lpm)

Operating Specifications

Caterpillar 631E II Scraper Operating Specifications specifications
Fuel Capacity	215.10 gal (814.15 l)

Scraper Bowl

Caterpillar 631E II Scraper Scraper Bowl specifications
Apron Closure Force	38,250.00 lbs (17,349.93 kg)
Apron Opening	79.00 in (200.66 cm)
Capacity - Struck	21.00 cu yd (16.06 cu m)
Cutting Edge Thickness	1.40 in (3.56 cm)
Depth of Cut - Maximum	17.00 in (43.18 cm)
Depth of Spread - Maximum	18.80 in (47.75 cm)
Ground Clearance - Maximum	21.50 in (54.61 cm)
Hyd. Penetration Force - 621G	57,375.00 lbs (26,024.89 kg)
Rated Load	75,000.00 lbs (34,019.47 kg)
Scraper Capacity - Heaped	31.00 cu yd (23.70 cu m)
Width - Cut - To Router Bits	138.30 in (351.28 cm)

Service Refill Capacities - Tractor

Caterpillar 631E II Scraper Service Refill Capacities - Tractor specifications
Cooling System	33.00 gal (124.91 l)
Crankcase	11.70 gal (44.28 l)
Differential	36.00 gal (136.26 l)
Final Drive - Each	7.00 gal (26.50 l)
Hydraulic Reservoir	50.00 gal (189.25 l)
Transmission	33.00 gal (124.91 l)
Wheel Coolant - Each	19.50 gal (73.81 l)

Steering System

Caterpillar 631E II Scraper Steering System specifications
Ground-Driven Secondary Steering System	52.00 gpm (196.82 lpm)
Hydraulic Output	96.20 gpm (364.12 lpm)
Steering Angle - Left	85 degrees
Steering Angle - Right	90 degrees
Width - 180 degrees Turn	40.10 ft (12.22 m)

Tractor Engine

Caterpillar 631E II Scraper Tractor Engine specifications
Bore	5.40 in (13.72 cm)
Caterpillar Net Power	490.00 hp (365.40 kw)
Displacement	1,099.00 cu in (18,009.42 cu cm)
EEC 80/1269	490.00 hp (365.40 kw)
Gross Power	490.00 hp (365.40 kw)
ISO 9249	490.00 hp (365.40 kw)
Net Power	450.00 hp (335.57 kw)
SAE J1349	485.00 hp (361.67 kw)
Stroke	6.00 in (15.24 cm)

Transmission

Caterpillar 631E II Scraper Transmission specifications
1 Forward	2.90 mph (4.67 kph)
2 Forward	5.20 mph (8.37 kph)
3 Forward	7.40 mph (11.91 kph)
4 Forward	10.00 mph (16.09 kph)
5 Forward	13.40 mph (21.57 kph)
6 Forward	18.20 mph (29.29 kph)
7 Forward	24.50 mph (39.43 kph)
8 Forward	33.20 mph (53.43 kph)
Max Speed Forward	33.00 mph (53.11 kph)
Reverse	6.20 mph (9.98 kph)

Weights

Caterpillar 631E II Scraper Weights specifications
Operating Weight	97,459.00 lbs (44,206.71 kg)
Total Operating - empty	97,466.40 lbs (44,210.07 kg)

Weights - Standard, Tandem

Caterpillar 631E II Scraper Weights - Standard, Tandem specifications
Front Axle	65,201.00 lbs (29,574.71 kg)
Front Axle Weight - Loaded	91,576.00 lbs (41,538.23 kg)
Rear Axle	32,259.00 lbs (14,632.45 kg)
Rear Axle - Weight - Loaded	80,884.00 lbs (36,688.41 kg)
Scraper Shipping	51,939.00 lbs (23,559.16 kg)
Total Operating - Empty	97,459.00 lbs (44,206.71 kg)
Total Operating - Loaded	172,459.00 lbs (78,226.18 kg)
Total Shipping	96,182.00 lbs (43,627.48 kg)
Tractor Shipping	44,243.00 lbs (20,068.31 kg)

Our Main Office

Construction Equipment Guide
470 Maryland Drive
Fort Washington, PA 19034
800-523-2200

About Us

Construction Equipment Guide covers the nation with its four regional newspapers, offering construction and industry news and information along with new and used construction equipment for sale from dealers in your area. Now we extend those services and information to the internet. Making it as easy as possible to find the news and equipment that you need and want.

Contents Copyrighted 2026, by Construction Equipment Guide, which is a Registered Trademark, registered in the U.S. Patent Office. Registration number 0957323. All rights reserved, nothing may be reprinted or reproduced (including framing) in whole or part without written permission from the publisher. All editorial material, photographs, drawings, letters, and other material will be treated as unconditionally assigned for publication and copyright purposes and are subject to Construction Equipment Guide’s unrestricted right to edit and comment editorially. Contributor articles do not necessarily reflect the policy or opinions of this publication.

Read our privacy policy here.
Mastodon