Power take off manufacturers

What are the different types of power take off on a farm tractor?

A power take off is basically a device which takes mechanical power from one source and transfers it to another equipment, mostly seen in vehicles such as tractors.

The three various types of power take off are transmission, live and independent.

Transmission is the earliest form of PTO and also the simplest. In this, the shaft is connected directly to the transmission of the tractor and it functions only when the clutch of the transmission is released which means if the gear is out, the power take off will stop working. This proves to be a disadvantage in certain applications.

An overrunning clutch prevents mower blade's or the driven equipment's tendency to put force on the shaft and on transmission which happens because of inertia and allows the shaft to freely spin in one direction. This is in-built in recent models of tractors unlike in older models where an extra piece of equipment used to be mounted on the shaft.

The second type is live that uses a two stage clutch to work. In this type, the operator can change gears or slow down. If the operator presses the clutch fully, it disengages both the transmission and PTO and when the operator presses the clutch half way, it disengages only the transmission.

The third type is an independent PTO. It has a separate clutch for controlling the shaft. This is again of two types, mechanical and hydraulic.