Industrial tractors may have additional implement mounting points, for attachments not generally seen or used elsewhere, Otherwise, they are commonly developed from AG or UTILITY designs, although modern backhoe tractors tend to be very uniquely "INDUSTRIAL". Ag tractors are optimized for cultivation of crops, usually row crops or crops like wheat for example. They have larger rear wheel diameters, due to the need to apply maximum traction for tillage, and the operator sits somewhat higher than in other applications. Usually, an ag tractor today will have pto, dual, triple or more hydraulics, a three point hitch, and other such equipment. A utility tractor is generally a smaller tractor, optimized for loader work, with a short wheelbase for manueverability. The transmissions tend to be a lot simpler than those found in AG tractors, with TSS type transmission being common. Width of the front end is now moot for new tractors, but among much older tractors, utilities nearly always came with a wfe, and AG tractors could have a narrow front end (due to the need for mounting implements such as a mounted cornpicker)
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