Prediction of potential failures in hydraulic gear pumps

Hydraulic gear pumps are used in many machines and devices. In hydraulic systems of machines gear pumps are main component of supply unit or perform auxiliary function. Gear pumps opposite to vane pumps are less complicated. They consists of such components as: housing, gear wheels, bearings, shaft, seal for rotation motion which are not very sensitive for damage and that is why they are using very often. However, gear pumps are break down from time to time. Usually damage of pump cause shutting down of machines and devices. One of the way for identifying potential failures and foreseeing their effects is a quality method. On the basis of these methods a preventing action might be undertaken before failure appear. In this paper potential failures and damages of a gear pump were presented by the usage of matrix FMEA analysis.