Caterpillar 797B Off-Highway Truck Specs

Category: Off-Highway Trucks ➔
Manufacturer: Caterpillar ➔
Model: 797B ➔

The Caterpillar 797B is the predecessor to the 797F and second in the 797 ultra class line of off-highway, haul trucks. It is rated to haul up to 380 tons and built for mining and heavy-duty construction applications around the world. The B model increased payload and engine power over the original 797.

Dimensions

Caterpillar 797B Off-Highway Truck Dimensions specifications
Dump Ground Clearance	6.17 ft (1.88 m)
Dump Height	50.17 ft (15.29 m)
Ground Clearance	2.85 ft (0.87 m)
Overall Height	24.88 ft (7.58 m)
Overall Length	47.67 ft (14.53 m)
Overall Width	30.03 ft (9.15 m)
Wheelbase	23.62 ft (7.20 m)

Dump

Caterpillar 797B Off-Highway Truck Dump specifications
Dump Angle	45 degrees
Load Capacity - Heaped	287.75 cu yd
Lower Time	18.5 sec
Raise Time	25 sec
Rated Payload	793,664.10 lbs (360,000.43 kg)

Engine

Caterpillar 797B Off-Highway Truck Engine specifications
Aspiration	Turbocharged
Displacement	7,143.00 cu in (117,053.06 cu cm)
Engine Make	2236
Engine Model	3524B HD EUI
Gross Power	3,550.00 hp (2,647.28 kw)
Net Power	3,370.00 hp (2,513.05 kw)
Number Of Cylinders	24
Power Measured @	1750 rpm

Operational

Caterpillar 797B Off-Highway Truck Operational specifications
Alternator Supplied Amperage	75 amps
Brake/Hoist System Fluid Capacity	486.70 gal (1,842.16 l)
Cooling System Fluid Capacity	315.00 gal (1,192.28 l)
Diff And Final Drive Fluid Capacity	110.00 gal (416.35 l)
Engine Oil Capacity	110.00 gal (416.35 l)
Fuel Capacity	1,800.00 gal (6,813.00 l)
Hydraulic System Fluid Capacity	263.00 gal (995.46 l)
Operating Voltage	24 V
Steering System Fluid Capacity	114.00 gal (431.49 l)
Tire Size	59/80R63 Standard Tires

Transmission

Caterpillar 797B Off-Highway Truck Transmission specifications
Max Speed	42.00 mph (67.59 kph)
Number Of Gears - Forward	7
Number Of Gears - Reverse	1
Transmission Type	Seven-speed planetary powershift with direct-injection

Weights

Caterpillar 797B Off-Highway Truck Weights specifications
Empty Weight	584,225.00 lbs (265,000.33 kg)
Loaded Weight	1,375,000.00 lbs (623,690.28 kg)
Weight Distribution Front - Empty	43.5 %
Weight Distribution Front - Loaded	33.3 %
Weight Distribution Rear - Empty	56.5 %
Weight Distribution Rear - Loaded	66.7 %

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