Unlike the Rototiller, the self propelled Howard Rotavator is equipped with a gearbox and driven forward, or held back, by its wheels. The gearbox enables the forward speed to be adjusted while the rotational speed of the tines remains constant which enables the operator to easily regulate the extent to which soil is engaged. For a two-wheel tractor rotavator this greatly reduces the workload of the operator as compared to a rototiller. These rotavators are generally more heavy duty, come in higher power (4-18 horsepower or 3-13 kilowatts) with either petrol or diesel engines and can cover much more area per hour.

Diesel Mini Tiller rotary tiller manufacturers are the newest and most popular type of small agricultural tillers or cultivators used by most farmers or homeowners.These are also known as power tillers, Garden Tillers . Not Powered by Gasoline but Diesel.It is multi-function with related tools, Dryland rototiller, paddy field rototiller,pumping,Transportation,threshing, ditching, spraying pesticide,etcDiesel Mini TillerPENGPAIIt can be widely meet the hills, mountains, greenhouses, orchards.It's more popular in developing country than gasoline Mini Tiller.
A rotary tiller for agriculture

Two-wheel tractor The higher power "riding" rotavators cross out of the home garden category into farming category, especially in Asia, Africa and South America, capable of preparing 1 hectare of land in 8 – 10 hours. These are also known as power tillers, walking tractors or two-wheel tractors. Years ago they were considered only useful for rice growing areas, where they were fitted with steel cage-wheels for traction, but now the same are being used in both wetland and dryland farming all over the world. Compact, powerful and, most importantly, inexpensive, these agricultural rotary tillers are providing alternatives to four-wheel tractors and in the small farmers' fields in developing countries are more economical than four-wheel tractors.

Four-wheel tractor Four-wheel tractor-drawn rotary tillers are attached to the three-point linkage, and are driven by a power take-off shaft. Generally considered a secondary tillage implement, they are commonly used for primary tillage in lighter soils instead of plowing. They are commonly termed power harrow or a rotavator in some markets. They also can also be used for cultivation between rows of vines, etc. The largest versions by rotavator manufacturers are now available in a 6m width, and require a tractor with a 150+ hp PTO to drive them.