Hydraulic rotary device can be applied to do circular motion of the host, such as crane rotary table, rotary machinery, and some of the machinery of circular work. Hydraulic rotary device can be widely used in aerial work truck, truck crane as the representative of the construction machinery field and solar photovoltaic power generation, wind power generation as the representative of the new energy field, as well as other automation, machine tool manufacturing, aerospace communications and other fields, it can be said that the hydraulic rotary device market potential is huge.

Hydraulic rotary device has the characteristic of reverse self-locking, which can realize reverse self-locking, that is, only by the worm drive worm wheel, but not by the worm drive worm movement. This characteristic makes the variable hydraulic motor hydraulic rotary device can be widely used in lifting, aerial work and other equipment, while improving the scientific and technological content of the host, but also greatly improve the host operation stability and safety factor.

Compared with the traditional gear transmission, the hydraulic rotary device can get relatively large reduction ratio, in some cases, can save the reducer parts for the host, thus reducing the purchase cost for customers, but also greatly reduce the failure rate of the host. While improving the safety factor of the host, it can also omit a set of worm gear reducer for the host, thus reducing the manufacturing cost of the host.