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Journal of Failure Analysis and Prevention, 2015, Volume 15, Issue 2, pp 179-183.
Georgios Triantafyllidis, Dimitrios Zagkliveris, Panagiotis Koliotsas.
Chemical Engineering, Aristotle University of Thessaloniki, K. Georgaki 4, 546 43, Thessaloniki, Central Macedonia, Greece.
Abstract
A farm tractor’s power take-off is a gearing system that converts the main power of the tractor’s machine to a rotating movement of a properly attached drive shaft. The shaft’s rotating action is very useful for the agricultural practice because it could be connected at its external end to numerous work equipments (vacuum systems, excavating devices, pumps, etc.) that function as the final step of the agricultural job. Numerous failures happened to both, the PTO and the shaft, are frequently referred. They could become very dangerous to the tractor’s users because they stop suddenly the work equipment. In this case study, we investigated a failure that happened to both, the PTO and the shaft. A failure mechanism is proposed with the aim to encourage farm tractor’s owners to ask for metallurgical investigation of the failure in evaluating the economical consequences of analog events on their property.
