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Fundamentals of wick lubrication for small sleeve bearings
LITERATURE
AND CURRENT
EVENTS
247
between the theoretical solutions and experimental values was obtained by using experimentally determined particle shear strengths. Fundamentals of Wick Lubrication Sleeve Bearings. H. J. Connors, ASLE Trans.,
for Small 9
(1966)
299-3’0.
The fundamentals of lubricant flow and distribution within wicking materials were determined experimentally. Application to the design of wick-lubricating systems for small sleeve bearings is discussed. Lubrication of a New 80 inch Hot Strip Mill. J. D. Lykins, Lubrication Eng., zz (9) (1966) 350-357; ro figs., 3 tables. Specifying Lubricants for a New 80 inch Hot Strip Mill. P. D. Metzger, Lubrication Eng., zz (9) (1966) 358-367; 4 figs., 5 tables, a refs. Constant-tension Hydraulic Loopers for a New 80 inch Hot Strip Mill. W. G. Ritter, Lubrication Eng., 22 (9) (1966) 368-371; 3 figs. Rehbinder Effect in Lubricated Cutting. P. L. Barlow, Nature, 211 (5053) 1076-1077; 2 figs., g refs. Metal-cutting Lubrication ous Electroplating. N. H. Cook, E. Rabinowicz Lubrication
Eng.,
Metal (1966)
Through continuand R. L. Vaughn, 7
22 (II) (1966) 447-452;
figs., 6 refs. Theory and experimental results are presented for titanium machined by “lubricated” endmills. The lubricant consists of soft, electroplated metallic films of lead, tin, zinc, cadmium, copper and iron. The plating takes place during that portion of a revolution when a tooth is not cutting. Preliminary tests indicate improvement in tool life of 2-8 times over that obtained with the best commercial fluids.
3.2.
Lubricants
Lubricants and Mechanical Components of Lubrication Systems for Space Environment (A Review). R. L. Johnson and D. H. Buckley, Lubrication Eng., 22 (IO) (1966) 408-414; 45 refs. Survey of Aerospace Requirements for Bearings and Lubricants. D. G. Flom, Lubrication Eng., 22 (IO) (1966) 415-423; 6 figs., z tables, 24 refs.
Research and Development of Materials for Use as Lubricants in a Liquid Hydrogen Environment. W. H. Rempe, Jr, ASLE Trans., 9 (1966) 213~-221.
to evaluate A program was conducted materials that could be used as lubricants in rolling-contact bearings operating in a liquid hydrogen environment at DN values up to 4 million mm-r.p.m. A unique ball and plate test apparatus was used to test twenty candidate lubricant materials selected for screening in the initial phase of the program. The ball-plate tester eliminated the use of test bearings in the initial material screening phase where the important factor was to evaluate the lubricants and bearing materials without the confounding effect of other bearing parameters. No tests were conducted in a nuclear radiation field; however, consideration was given to such an environment in the selection of the candidate materials. The lubricant investigation described herein resulted in the selection of four materials, bronze-filled fluorocarbon, bronze-filled polyimide, Ag-WSep-polyimide and Ag-MoSz, for further evaluation in actual bearing tests. These materials show promise of providing a significant increase in bearing life when operating in a liquid hydrogen environment. Lubrication of Ball Bearings with Volatile Organic Compounds. M. J. Devine, E. R. Lamson, L. Stallings and L. P. Gilmore, ASLE Trans., 9 (1966) 242-248. A new approach to vapor lubrication describing materials for wide temperature range and long term operation has been established by experiments that use high-speed rolling element bearings as test specimens. Several possibilities for the process of vapor lubrication are projected. In addition the effect of carrier gas composition as well as metal alloying element or cladding substrate component is demonstrated for a variety of volatile organic compounds. The significance of dispersion techniques for the volatile compounds carried by nitrogen gas is shown by experiments conducted for naphthalene. The Effect of Three Mineral Base Oils on Roller Bearing Fatigue Life. I. Koved, ASLE Trans., 9 (1966) 222~-228. The effect of three mineral base oils on roller bearing fatigue life has been studied. Life performance tests were conducted, using a specially controlled group of 45-mm bore cylindrical roller bearings. The results indicate that base oil stock affects bearing performance. Of the highly naphthenic, naphthenic, and paraffinic mineral oils studied, bearings lubricated with the latter achieved superior lives. The use of an oxidation inhibitor in the wear,
IO (1967)
245-259
AND CURRENT
EVENTS
247
between the theoretical solutions and experimental values was obtained by using experimentally determined particle shear strengths. Fundamentals of Wick Lubrication Sleeve Bearings. H. J. Connors, ASLE Trans.,
for Small 9
(1966)
299-3’0.
The fundamentals of lubricant flow and distribution within wicking materials were determined experimentally. Application to the design of wick-lubricating systems for small sleeve bearings is discussed. Lubrication of a New 80 inch Hot Strip Mill. J. D. Lykins, Lubrication Eng., zz (9) (1966) 350-357; ro figs., 3 tables. Specifying Lubricants for a New 80 inch Hot Strip Mill. P. D. Metzger, Lubrication Eng., zz (9) (1966) 358-367; 4 figs., 5 tables, a refs. Constant-tension Hydraulic Loopers for a New 80 inch Hot Strip Mill. W. G. Ritter, Lubrication Eng., 22 (9) (1966) 368-371; 3 figs. Rehbinder Effect in Lubricated Cutting. P. L. Barlow, Nature, 211 (5053) 1076-1077; 2 figs., g refs. Metal-cutting Lubrication ous Electroplating. N. H. Cook, E. Rabinowicz Lubrication
Eng.,
Metal (1966)
Through continuand R. L. Vaughn, 7
22 (II) (1966) 447-452;
figs., 6 refs. Theory and experimental results are presented for titanium machined by “lubricated” endmills. The lubricant consists of soft, electroplated metallic films of lead, tin, zinc, cadmium, copper and iron. The plating takes place during that portion of a revolution when a tooth is not cutting. Preliminary tests indicate improvement in tool life of 2-8 times over that obtained with the best commercial fluids.
3.2.
Lubricants
Lubricants and Mechanical Components of Lubrication Systems for Space Environment (A Review). R. L. Johnson and D. H. Buckley, Lubrication Eng., 22 (IO) (1966) 408-414; 45 refs. Survey of Aerospace Requirements for Bearings and Lubricants. D. G. Flom, Lubrication Eng., 22 (IO) (1966) 415-423; 6 figs., z tables, 24 refs.
Research and Development of Materials for Use as Lubricants in a Liquid Hydrogen Environment. W. H. Rempe, Jr, ASLE Trans., 9 (1966) 213~-221.
to evaluate A program was conducted materials that could be used as lubricants in rolling-contact bearings operating in a liquid hydrogen environment at DN values up to 4 million mm-r.p.m. A unique ball and plate test apparatus was used to test twenty candidate lubricant materials selected for screening in the initial phase of the program. The ball-plate tester eliminated the use of test bearings in the initial material screening phase where the important factor was to evaluate the lubricants and bearing materials without the confounding effect of other bearing parameters. No tests were conducted in a nuclear radiation field; however, consideration was given to such an environment in the selection of the candidate materials. The lubricant investigation described herein resulted in the selection of four materials, bronze-filled fluorocarbon, bronze-filled polyimide, Ag-WSep-polyimide and Ag-MoSz, for further evaluation in actual bearing tests. These materials show promise of providing a significant increase in bearing life when operating in a liquid hydrogen environment. Lubrication of Ball Bearings with Volatile Organic Compounds. M. J. Devine, E. R. Lamson, L. Stallings and L. P. Gilmore, ASLE Trans., 9 (1966) 242-248. A new approach to vapor lubrication describing materials for wide temperature range and long term operation has been established by experiments that use high-speed rolling element bearings as test specimens. Several possibilities for the process of vapor lubrication are projected. In addition the effect of carrier gas composition as well as metal alloying element or cladding substrate component is demonstrated for a variety of volatile organic compounds. The significance of dispersion techniques for the volatile compounds carried by nitrogen gas is shown by experiments conducted for naphthalene. The Effect of Three Mineral Base Oils on Roller Bearing Fatigue Life. I. Koved, ASLE Trans., 9 (1966) 222~-228. The effect of three mineral base oils on roller bearing fatigue life has been studied. Life performance tests were conducted, using a specially controlled group of 45-mm bore cylindrical roller bearings. The results indicate that base oil stock affects bearing performance. Of the highly naphthenic, naphthenic, and paraffinic mineral oils studied, bearings lubricated with the latter achieved superior lives. The use of an oxidation inhibitor in the wear,
IO (1967)
245-259