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A Case Study - Failure Analysis of Needle Roller Bearing at Gudgeon Pin of Ginning Machine

Author(s):

Atul Damodherrao Thakare , DMIETR WARDHA; P.A.Chandak, DMIETR WARDHA; S.P.Untawale, DMIETR WARDHA

Keywords:

double roller ginning machine, Brinelling, needle roller bearing, production capacity

Abstract

This project deals with failure analysis of needle roller bearing at gudgeon pin vital in ginning industries to produce relative motion between connecting rod and head block, which further oscillates beater shaft assembly with high speed. A ginning machine under consideration having production capacity (Lint) 40 to 70 Kg/Hr. With motor providing power 5 H.P and speed 1000 rpm. After the study of existing ginning machine production line where 20 double roller machine are continuously running need to be stop after every 2 to 3 hours for around 30 min for providing lubricants, if this not done then there is definite failure of needle roller bearings occurs. The failure of bearings is mainly due to Brinelling tends to damage within a short period, in which the bearing surface turns scaly and peel off due to contact load repeatedly received on the raceways and rolling surface due to rotation. This result in roller and inner races surface of needle roller bearing get damage affects imbalance of overall mechanism from connecting rod to the beater shaft assembly and creates vibration in a machine. Also it will cause sudden breakage of other parts of machine like breakage of connecting rod, enlargement of holes of head pin in head block and also major reason for failure of Needle roller bearing mounted in between eccentric shaft and connecting rod. Eventually ginning machine will have to stop for the maintenance which also results into the stoppage of production line for almost half Hrs. for rectification of existing situation where life of the needle roller bearing is too small which affect on the production of industry and there is need to stop the machine while replacing the bearing. So it becomes essential to replace the bearings which will give desired life, and high dynamic loading capacity.

Other Details

Paper ID: IJSRDV3I40605
Published in: Volume : 3, Issue : 4
Publication Date: 01/07/2015
Page(s): 917-920

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