Analytical solutions for the pressure, load capacity, friction, and flow of a Michell thrust bearing in asymmetric operation are presented. The flow developed in this bearing is asymmetric because the surface rotation axis is offset from the bearing sector axis. These bearings are used with circular saws to constrain transverse displacement of the blades. The pressure, load capacity, friction, and flow increase significantly with offset of the bearing and rotation axes, and they are sensitive to the sector orientation. Results are presented for two sector angles and a complete range of orientations.
Get full access to this article
View all access options for this article.
References
1.
SafarZ. S.‘Performance characteristics for the hydrostatic thrust bearing of a saw blade’, Tribology Int.198013, 79–83.
2.
BrandR. S.‘The hydrodynamic lubrication of sector-shaped pads’, Trans Am. Soc. mech. Engrs, 1961, 1061–1063.
3.
CharnesA.SaibelE.YingA. S. C.‘On the solution of the Reynolds equation for slider bearing lubrication. V—The sector thrust bearing’, Trans Am. Soc. mech. Engrs, 195375, 1125–1132.
4.
KettleboroughC. F.‘Michell bearing lubrication. Part II: Correlation between theory and experiment’, Proc. Instn mech. Engrs1955169, 756–765.
5.
RaimondiA. A.. ‘The influence of longitudinal and transverse profile on the load capacity of pivoted pad bearing’, Trans Am. Soc. mech. Engrs19557, 321–328.
6.
RaimondiA. A.. ‘An adiabatic solution for the finite slider bearing (L/B=1)’, Trans Am. Soc. Lubric. Engrs19669, 283–298.
7.
SternlichtB.SneckH. J.. ‘Numerical solution of Reynolds equation for sector thrust bearings’, Lubric. Engng195713, 459–463.
8.
KuninI. A.. ‘On the hydrodynamic theory of lubrication of pad type bearings’, Wear19582, 9–20.
9.
PinkusO.. ‘Solution of the tapered land sector thrust bearing’, Trans Am. Soc. mech. Engrs195880, 858–864.
10.
SternlichtB.CarterG. K.ArwasE. B.. ‘Adiabatic analysis of elastic centrally pivoted sector thrust bearing pads’, J. Appl. Mech.196183, 179–187.
11.
BosmaR.MoesR. H.‘Design charts for optimum bearing configuration: 2—The pivoted pad thrust bearing’, Trans Am. Soc. mech. Engrs Series F197090573–577.
12.
GarnerD. R.MartinF.. Discussion on Etsion, I. ‘Design charts for arbitrarily pivoted, liquid-lubricated, flat-sector-pad thrust bearings’, J. Lubric. Technol.1978100, 285.
13.
EtsionI.. ‘Design charts for arbitrarily pivoted, liquid-lubricated, flat-sector-pad thrust bearing’, J. Lubric. Technol.1978100, 279–284.
14.
HuebnerK. H.‘A three dimensional thermohydrodynamic analysis of sector thrust bearings’. Trans Am. Soc. Lubric. Engrs, 1974, 17, 62–73.
