DESIGN AND CONSTRUCTION OF JOURNAL BEARING DEMONSTRATION RIG

📄 Project Abstract

The journal bearing demonstration rig is an apparatus which is used to study how pressure would vary around the section of a journal bearing at various speed of the shaft and loading conditions. The design of the journal bearing was done by the use of standard design procedures carefully stated within this work. The frame, the journal bearing, the journal shaft, the base plate and all relevant components of the apparatus were designed. Other parts not constructed were procured. The fabrication and construction processes were carried out in the workshop. The shaft to be used was machined on the lathe machine to the design specification. So also was the bearing to be used. This was all explicitly discussed in this report. Frame construction was carried out by welding process also stated in the work. The spring damper support was another constructed part. The assembly was done in such a way that the eccentricity between the bearing and the shaft would exist so as to get results. Relevant formulas, derivation and equation models were used in carrying out calculations used to get mathematical results that can be used to compare the experimental results. It is observed in the graph plotted from the experimental results, that the speed is proportionally or linear to the pressure build up in the journal bearing. The pressure tapping (h5), shows the highest reading on the manometer board, ranging from 76cm for 1144rpm to 25cm for 572rpm due to eccentricity of the two centers (shaft and journal bearing).