An Investigation of the Steady-State Performance of a Pivoted Shoe Journal Bearing with ISO VG 32 and VG 68 Oils

Brockwell, K.; Dmochowski, Waldemar; DeCamillo, Scan M.

doi:10.1080/05698190490493382

Cited by 10 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tests were carried out on the test facility, which has been described in [1]. Instrumentation fitted to the test rig enables the following measurements to be made: bearing load, shaft speed, friction torque, bearing position with respect to the shaft, temperature at the bearing surfaces at 32 locations, oil inlet temperature, oil outlet temperature, oil flowrate, and oil supply pressure.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Lubricant Viscosity-Temperature Characteristics on the Performance of Plain Journal Bearings

Dmochowski

Webster

2005

World Tribology Congress III, Volume 2

View full text Add to dashboard Cite

Experimental and analytical results of bearing friction loss, operating temperature, and oil gap thickness are presented comparing performance characteristics of bearings operating with the different lubricants. The lubricants were blended using a variety of mineral and synthetic base stocks to achieve a range of viscosity-temperature characteristics. The results show that the test bearings running with higher viscosity index (VI) lubricants generated slightly lower bearing surface temperatures than those generated using a low VI lubricant. The high VI lubricant also reduced the total power losses by up to 10%. These gains are achieved with little or no change in the minimum oil film thickness.

show abstract

Section: Methodsmentioning

confidence: 99%

The Effect of Lubricant Viscosity-Temperature Characteristics on the Performance of Plain Journal Bearings

Dmochowski

Webster

2005

World Tribology Congress III, Volume 2

View full text Add to dashboard Cite

show abstract

“…Comparison between mineral based lubricants of varying grade accomplished by Ferguson et al [6] for large tilting pad thrust bearings, Glavatskih and Decamillo [7] for smaller tilting pad thrust bearings, and Brockwell et al [8] for tilting pad journal bearings found that ISO VG32 lubricants resulted in reduced temperatures and power loss as well as reduced oil film thickness when compared to higher viscosity grade lubricants such as ISO VG46 and ISO VG68.…”

Section: Introductionmentioning

confidence: 96%

Synthetic Lubricants in Hydrodynamic Journal Bearings: Experimental Results

Simmons

Glavatskih

2011

Tribol Lett

View full text Add to dashboard Cite

Synthetic lubricants and additives have seen many major improvements in recent years. However, very little is known about the performance peculiarities of these new lubricants in actual machines. To fill this gap, a new full-scale hydro-dynamic journal bearing test rig has been constructed to evaluate the behavior of conventional and new bearing designs, synthetic lubricants and variations in operating parameters. This test rig's bearing has diameter 180 mm with measuring capabilities including continuous film thickness and film pressure as well as temperature. The new machine was used to compare a number of synthetic lubricants to mineral based lubricants, finding that performance of the synthetic lubricants was superior to their mineral based counterparts of much higher viscosity grade. These tests showed that high viscosity index (VI) synthetic lubricants had higher viscosity in the region of maximum pressure and lower viscosity elsewhere in the bearing than similar mineral based lubricants. This reduction in viscosity in low pressure zones was found to produce a measurable reduction in friction and power loss in the bearing system. This paper provides comparative performance results of several formulations of current and future turbine oils from measurements of losses, oil film thickness, and temperature under a range of operating parameters. Lubricants tested include ISO VG68 and VG32 mineral based turbine oils (VG68 and VG32), ISO VG32 synthetic ester based oil (SE32), two ISO VG22 synthetic ester based oils (SE22 and SV22), and ISO VG15 synthetic ester based oil (SE15). It was found that SE32 and VG68 provided similar performance at lower speeds while SV22 provided similar performance to VG68 at the highest speed. Likewise, SE22 and SV22 provided similar performance to VG32 at low speeds while SE15 provided similar performance to VG32 at medium to higher speeds. Generally, the results demonstrate the potential for replacing mineral based lubricants with high performance synthetic lubricants of significantly lower viscosity grade without sacrificing bearing safety.

show abstract

“…The argument has previously been made that oil film thickness can be safely reduced to some degree [5,21] by operating with a higher maximum temperature thus allowing for further loss reduction. However, this decision should be taken separately from a change of lubricant.…”

Section: Practicalitiesmentioning

confidence: 99%

Powerplant Lubricant Selection for Improved Efficiency and Environmental Impact Reduction

Simmons

Кузнецов

Glavatskih

2010

Volume 5: Energy Systems Analysis, Thermodynamics and Sustainability; NanoEngineering for Energy; Engineering to Address Climat

View full text Add to dashboard Cite

show abstract

An Investigation of the Steady-State Performance of a Pivoted Shoe Journal Bearing with ISO VG 32 and VG 68 Oils

Cited by 10 publications

References 8 publications

The Effect of Lubricant Viscosity-Temperature Characteristics on the Performance of Plain Journal Bearings

The Effect of Lubricant Viscosity-Temperature Characteristics on the Performance of Plain Journal Bearings

Synthetic Lubricants in Hydrodynamic Journal Bearings: Experimental Results

Powerplant Lubricant Selection for Improved Efficiency and Environmental Impact Reduction

Contact Info

Product

Resources

About