Effect of Groove Location on the Dynamic Characteristics of Multiple Axial Groove Water Lubricated Journal Bearing

The stability characteristics of water lubricated journal bearings having three axial grooves are obtained theoretically. In this lubricant (water) is fed under pressure from one end of the bearing, through the 3-axial grooves (groove angles may vary). These bearings can use the process fluid as the lubricant, as in the case of feed water pumps. The Reynolds equation is solved numerically by the finite difference method satisfying the boundary conditions. The stiffness and damping coefficient for various bearing number and eccentricity ratios, assuming linear pressure drop along the groove, shows that smaller groove angles better results.

• M. Vijaya Kini
• R. S. Pai
• D. Srikanth Rao
• Satish Shenoy B
• R. Pai

• 3-axial groove
• dynamic characteristics
• groovelocation
• water lubricated bearings.

[1] B.C.Majumdar, R. Pai, and D. J. Hargreaves, "Analysis of water
lubricated Journal Bearings with Multiple axial grooves". Proc. Instn.
Mech. Engrs, Part J, Journal of Engineering Tribology, Vol. 218, 2004,
pp. 135-146.
[2] R. Pai,, and B.C.Majumdar, "Stability of submerged oil film journal
bearings under dynamic load". Wear, Vol. 146, 1991, pp. 125 - 135.
[3] Shelly, P and Ettles, C., "Solutions for the load capacity of journal
bearings with oil grooves, Holes, Reliefs or Chamfers in Non - optimum
positions". Proc.Instn Mech. Engrs, 1971, C56/71, pp. 38-46.
[4] D. J. Hargreaves, and Elgezway, A.S., "Optimization of grooving
arrangements in water lubricated Non-Metallic journal bearings". Trans.
IEAust, ME18 (3), 1993, pp. 245 - 251.
[5] Vijayaraghavan, D., and Keith, T.G. "Effect of type of location of oil
groove on the performance of journal bearings". Tribology Trans, 35,
1992, pp. 98-106.