Among the best features about tractors is the versatility of the trunk end. The highly effective diesel engine has an productivity shaft on the back coming out of the 3 point hitch known as the Power REMOVE or PTO. This is an engineering foresight which will be difficult to complement. With the invention and wide implementation of the single feature, it offered tractors the ability to use three level attachments that had gearboxes and different turning pieces without adding an external power origin or alternate engine. While the diesel engine that powers the forward motion of the tractor spins, it turns this PTO shaft traveling tillers, mowers, sweepers, and several other attachments that really crank out the horsepower and complete the job. When searching at PTO shafts, you must appreciate the forces that are placed on these essential components and the basic safety mechanisms that must be in location to protect yourself and your investment. One thing you notice when searching at a PTO shaft may be the plastic sleeve that encases the whole amount of the shaft between your tractor and the attachment, the metallic shaft is actually turning inside of this clean protective casing, avoiding curious onlookers from grabbing a high horsepower turning shaft and seriously doing some damage to their hands and arms. The following point you might notice is the bolts and plates that are located at one end of the shaft, these bolts and plates are the automatic pressure relief system that manufacturers put on them to release pressure if for instance a tiller digs partially into hard ground that it could not power through, 1 of 2 things will happen, the slip-clutch will engage and absorb most of the excess strength, or the “shear” bolt will break off allowing the PTO to turn freely while disengaging the energy going to some of the working parts of the attachment. Tractor PTO shafts come in varying sizes, to truly get you close to the actual size of shaft that you will need for your unique Tractor Pto Drive Shaft purpose, but virtually all PTO SHAFTS REQUIRE Trimming FOR PROPER FIT!
A ability take-off (PTO) shaft transfers mechanical electric power from a tractor to an implement. Some PTO-driven apparatus is operated from the tractor chair, but many types of 
farm products, such as elevators, grain augers, silage blowers, etc, are operated in a stationary posture, enabling an operator to keep the tractor and move around in the vicinity of the put into action.
A PTO shaft rotates at a swiftness of either 540 rpm (9 rotations per second) or 1,000 rpm (16.6 rotations per second). At these speeds, a person’s limb could be pulled into and covered around a PTO stub or driveline shaft several times before the person, a good person with extremely fast reflexes, can react. The fast rotation swiftness, operator error, and lack of proper guarding produce PTOs a persistent hazard on farms and ranches.