Micropitting And Wear Assessment Of Roller Bearing
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Date
2022-07-24
Authors
Hamidi, Muhammad Nafiz
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Rolling element bearing is used in many applications such as in automotive
industries, and heavy equipment or machinery. It is important to make sure that the
bearing does not fail because it could lead to the failure of the machine. Micropitting
is one of the most common phenomena that can be found on the bearing surface that
can lead to the failure of the bearing. Micropitting are affected by several factors
such as surface topography, material, load, lubricant, temperature, speed, lambda
ratio and slide to roll ratio. Lubricant is usually introduced into the rolling contact of
the roller bearing in order to control the friction and wear of the bearing which can
have an effect on the rate of micropitting formations The purpose of this study is to
investigate the micropitting and wear of the roller bearing lubricated with palm oil
grease. The experiment is carried out using the roller test rig. The roller surface is
scanned using a microscope at a few cycles to observe the progress of the surface
micropitting. It is found that the roller surface lubricated with palm grease with a
nano additive took the longest time (150000 cycles) for the surface to damage. The
wear volume and micropitting depth are the smallest which are 20747 µm3
and -4.4 µmas compared to the other lubricating conditions.