Agricultural track-layers (sometimes called chain tractor or crawler) range in size from 15kW to 250kW. Tracks can be made from rubber or steel and vary in width depending on the application. Weight distribution for agricultural purposes is different from that for industrial use. Because the load is applied to the rear of these tractors, weight distribution should be similar to that for an equal 4-wheel drive tractors.

Track-layers have been imported into many countries but their major use has been in industrial and forestry regions. Very few are used in rice farming as they have high purchase price, high repair and maintenance costs and are not efficient when working in smaller paddy fields.