Caterpillar Takes on Technology with 630K Series Wheel Tractor-Scrapers By mid-2013, development progressed to the point of building three pilot machines, one of which we saw (but were not allowed ...

The three track models in John Deere's new 9R/9RT Scraper Special Series Tractors -- the 9460RT, 9510RT, and 9560RT -- get a new Durabuilt 5500 Series scraper rubber track. Three new wheeled ...