Further Test Results of the Leading-Edge-Groove (LEG) Tilting Pad Thrust Bearing

1988 ◽  
Vol 110 (1) ◽  
pp. 174-179 ◽  
Author(s):  
A. M. Mikula
Keyword(s):  
Experimental Data ◽  
Test Data ◽  
Power Loss ◽  
Thrust Bearing ◽  
Leading Edge ◽  
Temperature Data ◽  
Experimental Temperature ◽  
Test Results ◽  
Tilting Pad ◽  
Controlled Flow

This paper compares the LEG and pressurized controlled flow lubricant supply methods and evaluates their influence on the babbitt temperature and bearing power loss performance of a tilting pad, equalizing thrust bearing. The paper also presents new experimental temperature data from bidirectional testing of a unidirectional LEG bearing. The experimental data presented is from a 267 mm (10.5 in.) O.D. bearing, operating at shaft speeds up to 13000 rpm with applied loads that produced mean unit pressures of up to 3.45 MPa (500 psi). Conclusions are drawn based upon these test data.

A Comparison of Tilting Pad Thrust Bearing Lubricant Supply Methods

1983 ◽  
Vol 105 (1) ◽  
pp. 39-45 ◽  
Author(s):  
A. M. Mikula ◽  
R. S. Gregory
Keyword(s):  
Experimental Data ◽  
Power Loss ◽  
Thrust Bearing ◽  
Leading Edge ◽  
Potential User ◽  
Thrust Bearings ◽  
Tilting Pad ◽  
Edge Distribution

This paper compares three different lubricant supply methods—pressurized supply (flooded), spray feed, and leading edge distribution groove—and analyzes their influence on the performance of tilting pad, equalizing thrust bearings. The paper presents experimental data on 267 mm (10-1/2 in.) o.d. bearings, operating at shaft speeds up to 13,000 rpm with loads ranging up to 3.45 MPa (500 psi). The data presented demonstrate the effect each lubricant supply method has on bearing power loss and temperature. Conclusions are drawn, based upon the effectiveness of each design, to guide the potential user.

The Leading-Edge-Groove Tilting-Pad Thrust Bearing: Recent Developments

1985 ◽  
Vol 107 (3) ◽  
pp. 423-428 ◽  
Author(s):  
A. M. Mikula
Keyword(s):  
Experimental Data ◽  
Power Loss ◽  
Thrust Bearing ◽  
Leading Edge ◽  
Thrust Bearings ◽  
Temperature Performance ◽  
Tilting Pad ◽  
Recent Developments ◽  
Bearing Design

This paper compares the leading edge groove and pressurized supply (flooded) lubricant supply methods, and analyzes their influence on the performance of equalizing tilting pad thrust bearings. This paper presents new experimental data on 6-shoe, 267 mm (10 1/2 in.) O.D. bearings, operating at shaft speeds up to 14000 rpm, with loads ranging up to 3.45 MPa (500 psi) for two different lubricants. The data presented details the power loss and babbitt temperature performance of two versions of the leading-edge-groove bearing design and contrasts the results with a pressurized supply bearing design.

Effects of High-Operating Speeds on Tilting Pad Thrust Bearing Performance

1976 ◽  
Vol 98 (1) ◽  
pp. 73-79 ◽  
Author(s):  
J. W. Capitao ◽  
R. S. Gregory ◽  
R. P. Whitford
Keyword(s):  
Experimental Data ◽  
Flow Rate ◽  
Power Loss ◽  
High Speed ◽  
Thrust Bearing ◽  
Full Scale ◽  
Thrust Bearings ◽  
Tilting Pad ◽  
Speed Performance ◽  
Bearing Loads

A comparison of the high-speed performance characteristics of tilting-pad, self-equalizing type thrust bearings through two independent full-scale programs is reported. This paper presents experimental data on centrally pivoted, 6-pad, 267-mm (10 1/2-in.) and 304-mm (12-in.) O.D. bearings operating at shaft speeds up to 14000 rpm and bearing loads ranging up to 2.76 MPa (400 psi). Data presented demonstrate the effects of speed and loading on bearing power loss and metal temperatures. Included is a discussion of optimum oil supply flow rate based upon considerations of bearing pad temperatures and power loss values.

Performance Characteristics of Tilting Pad Thrust Bearings at High Operating Speeds

1976 ◽  
Vol 98 (1) ◽  
pp. 81-88 ◽  
Author(s):  
J. W. Capitao
Keyword(s):  
Power Loss ◽  
Thrust Bearing ◽  
Experimental Program ◽  
Test Results ◽  
Transition Range ◽  
Thrust Bearings ◽  
Laminar To Turbulent Transition ◽  
Turbulent Transition ◽  
Tilting Pad ◽  
Bearing Loads

A full scale experimental program was conducted to investigate the influence of fluid film turbulence on the performance of the tilting-pad, self-equalizing type thrust bearing. Test results include data on centrally pivoted, 6-pad, 381-mm (15-in.) and 432-mm (17-in.) O.D. bearings operating with shaft speeds up to 10000 rpm and bearing loads ranging up to 3.447 MPa (500 psi). Data collected include bearing metal temperatures, bearing power loss, and observation of the laminar to turbulent transition range.

Performance of Elastic, Centrally Pivoted, Sector, Thrust-Bearing Pads—Part I

1961 ◽  
Vol 83 (2) ◽  
pp. 169-178 ◽  
Author(s):  
B. Sternlicht ◽  
J. C. Reid ◽  
E. B. Arwas
Keyword(s):  
Experimental Data ◽  
Approximate Calculation ◽  
Thrust Bearing ◽  
Full Scale ◽  
Fluid Film ◽  
Thermal Gradients ◽  
Thrust Bearings ◽  
Adiabatic Conditions ◽  
Tilting Pad

This is the first of three papers on the results of a recently completed study of the performance of tilting pad thrust bearings. It describes a method of analysis that was worked out for these bearings, which includes viscosity variations in the fluid film and an approximate calculation of the pad deflections caused by the hydrodynamic pressures. Equilibrium of moments is satisfied, laminar and adiabatic conditions are assumed, and the lubricant is incompressible. The two subsequent papers of this series will describe: (a) The results of an analysis which includes a more rigorous determination of pad deflections caused by hydrodynamic pressures and thermal gradients. (b) A comparison of analytical results with experimental data obtained in full-scale bearing tests.

Tilting Pad Thrust Bearing Tests—Influence of Pivot Location

1988 ◽  
Vol 110 (4) ◽  
pp. 609-613 ◽  
Author(s):  
W. W. Gardner
Keyword(s):  
Test Data ◽  
Thrust Bearing ◽  
Arc Length ◽  
Tilting Pad

Test data are presented on the effect of circumferential pivot position on bearing temperature for two tilting pad thrust bearing designs. Pivots at 50, 60, 70, and 80 percent of the arc length were used. These tests follow earlier tests with a third design (pad support configuration), previously reported. The results indicate that pad temperatures decrease significantly as the pivot is advanced from the central (50 percent) position to at least the 70 percent position, and then tend to level, with some indications that a minimum is reached at about 75 percent.

Sign in / Sign up

Export Citation Format

Share Document