• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Unknown

Nige

Senior Member
Joined
Jun 22, 2011
Messages
28,984
Location
G..G..G..Granville.........!! Fetch your cloth.
Looks like a big Cat off-road truck.
No it ain't. At least it's not like any Cat chassis I've ever seen.
Those two links at the front RH corner make me think it could be a Unit-Rig MT4400 because that model of truck has a single-beam front axle, not independent nitrogen-over-oil struts like most mining trucks. (Pic of Unit-Rig chassis below).
If it is a Unit-Rig it will be painted the same Cat yellow as Cat's own line of trucks.

upload_2022-4-5_1-23-32.png
upload_2022-4-5_1-26-24.png
 

alco

Senior Member
Joined
Apr 7, 2006
Messages
1,286
Location
here
I don’t know why, as the rough ride is the only thing I can really pick at on those trucks. They’re absolute beasts.
 

Nige

Senior Member
Joined
Jun 22, 2011
Messages
28,984
Location
G..G..G..Granville.........!! Fetch your cloth.
I don’t know why, as the rough ride is the only thing I can really pick at on those trucks. They’re absolute beasts.
I had dealings with the older range of Unit-Rigs in Chile about 20 years ago and by f**k they were crude. They also rode like a brick.....
From further delving it appears as though the 794, 796, & 798 all share that same front suspension design using a beam axle. How positively 19th Century.
 

John C.

Senior Member
Joined
Jun 11, 2007
Messages
12,865
Location
Northwest
Occupation
Machinery & Equipment Appraiser
Everything old is new again. Some young engineer thinks he is being clever?
 

Nige

Senior Member
Joined
Jun 22, 2011
Messages
28,984
Location
G..G..G..Granville.........!! Fetch your cloth.
Everything old is new again. Some young engineer thinks he is being clever?
I was wondering whether the Unit-Rig side of the Cat haul truck operation is being given the responsibility for design of the new range of electric-drive range trucks (794, 796, & 798) and the Cat side is concentrating on the mechanical-drive trucks.? If that's the case I wonder where that leaves the 795AC.?
 

Cmark

Senior Member
Joined
Jan 2, 2009
Messages
3,176
Location
Australia
I've just has a quick look at the 798 in SIS and to say that it is a new design is giving it a bit too much credit. From what I can see it is the bones of a Unit Rig/Bucyrus truck with a lot of input from the corporate parts bin.
 
Top