Born of necessity, the Caterpillar DW21, the great granddaddy of all Caterpillar 2-axle scrapers, went on to become a very successful scraper for Cat and also laid the groundwork for the later two-axle 600 series machines. By RICHARD CAMPBELL.
We originally had a look at the Caterpillar DW21 back in May 2004. As with some of those...
A logical development of the Caterpillar J619, Caterpillar’s J621 elevating scraper was introduced in 1965. By Richard Campbell
The Caterpillar J621 was a pairing of the tractor unit of the then new 621 open bowl scraper with an elevating scraper built by Johnson Manufacturing Co of Lubbock, Texas, which had also built the bowl...
After years of planning and testing in secrecy, Caterpillar finally unveiled its first hydraulic excavator a fair bit later than a lot of the competition. By Richard Campbell
Caterpillar’s first hydraulic excavator, the model 225, was launched in 1972 after a lengthy testing period.
Caterpillar was quite a late entrant into the...
