A study of bearing and its types conference Paper

Keywords: Machine element, Relative motion, Frictional resistance, Rubbing surfaces, Lubricant,
Rolling bearing, Sliding bearing. 
I. INTRODUCTION 
Due to early industrial necessity for bearings, many thrust pad bearings were theoretically studied in the 1950s 
by investigators for design and development of good performing bearings. It has been observed that in the past 
many researchers [1–6] have analyzed thrust bearings having various surface profiles on the pads. Charnes et al. 
[1] have reported higher load carrying capacity with stepped pad thrust bearing in comparison to the 
conventional plane inclined thrust bearing. Authors performed adiabatic analysis and have reported reduction in 
temperature with stepped pad thrust bearing in comparison to plane thrust bearing. Abramovitz [2] studied the 
effects of pad curvatures on thrust bearing performances. Bagci and Singh [5] and Gethin [6] have reported that 
the film shapes have considerable influence on the bearing performances. Anant Pal Singh [7] has investigated 
effects of continuous circumferential surface profiles on the performance characteristics of a sector-type thrust 
bearing. A computer-aided finite difference numerical solution of the Reynolds equation in polar form is used to 
determine pressure distributions for an optimum inclination of a sector pad. He reported that As compared with 
conventional taper fluid film shape, new surface profile (cycloidal, catenoidal, exponential, polynomial) are 
found to offer a significant increase in the load-carrying capacity as well as a considerable reduction in the 
coefficient of friction. 
Hargreaves [8] has studied theoretically and experimentally the effects of surface waviness over the load 
carrying capacity of finite slider bearing. The author recorded enhanced load carrying capacity in the presence 
of surface waviness on the stationary pad. Das [9], Naduvinamani et al. [10], and Dobrica and Fillon [11] have 

---

International Journal of Advance Research In Science And Engineering http://www.ijarse.com
IJARSE, Vol. No.4, Special Issue (01), March 2015 ISSN-2319-8354(E) 
1675 | 
P a g e
reported that the shape of the converging wedge influences the bearing performance significantly. Researchers 
[10] have investigated infinitely wide rough slider bearings isothermally for exponential, hyperbolic, and secant 
film shapes using couple stress fluids. The authors have reported that the increase in pressure is more for the 
exponential and hyperbolic sliders. Moreover, investigators [11] have studied the THD behaviour of a slider 
bearing having a pocket and reported that the maximum pressure is higher for the pocketed bearing in 
comparison to plane slider bearing. Andharia et al. [12] studied the influence of film shape on the performance 
of longitudinally rough, infinitely wide slider bearing for isothermal conditions. Andharia et al. [13] have 
reported better load carrying capacity with exponential, secant, and hyperbolic film shapes in comparison to the 
inclined plane film shape.