None
Bearings with rolling contact, classification of, 2 sliding contact, classification of, 2 Body of oils, 112 Bores of bearings, permissible variations in, 90 Brasses, car, wear of, 30, 55 Breaking-down point of oil film, 25 Bronzes, Allan, 48 composition of, 48, 49, 50, 50, 51, 54 physical properties of, 53 wear of, 54, 55, 56 Cages far ball bearings, 181, li Camelia metal, 48 229 230 INDEX Capacity of conical roller, journal bearings, 220 conical roller thrust bearings, 228 cylindrical roller, journal bearings, 219 flexible roller bearings, 212 plain roller thrust bearings, 223 radial ball bearings, 177 rings to deliver oil, 97 roller, journal bearings, 219 thrust ball bearings, 178 Carbon bronze, 48 Car box metal, 49 ring-oiling design, 163 brass lining, 48 brasses, wear of, 55 truck bearings, 158 roller bearings, 218 Care of automobile ball bearings, 207 bearings, 166 Cast iron as bearing metal, 43 Castor oil, in Centrifugal oilers, 98 Characteristics of a good bearing metal, 41 Classification of bearings, i lubricating devices, 93 lubricants, in Clearances in journal bearings, 90 Coefficient of friction, definition of, 6 lateral, 39 Morin, 10, n, 12, 13, 14 Stribeck, 175 Coefficients of friction of ball bearings, 175 collar bearings, 37 flexible roller bearings, 212 journal bearings minimum, 31 leather on cast iron, 14 locomotive values, 40 metal on metal, 14 oils and greases, comparative, 113, 114 plain roller thrust bearings, 228 radial ball bearings, 183 roller bearings, 175 sliding surfaces, 40 step bearings, 38 thrust ball bearings, 189 Tov^er for journal bearings. 33, 34, 35, 36 unlubricated surfaces, Rennie, 10 various substances, 10 Coefficients of wood and metal, 12, 13 wood on wood, 11 Collar bearings, coefficients of friction of, 37 moment of friction of, 8 work of friction of, 8 Combination of metals for journals and bearings, 42 Comparison of lubricating methods, 20, 94 Cone-type ball bearings, 188 Conical roller journal bearings, 219 thrust bearings, 228 Construction of ball bearings, 180-195 journal bearings, 141— 165 Cooling bearings by water jacket, no Cornish bronze, 48 Curvature of ball race grooves, 176 Cylinder lubrication, quantity of oil for, 116 oil, specifications for, 130, 131 (dark) specification for, 125 (filtered) specification for, 126 Cyprus bronze, 53, 54, 56 Damascus bronze, 49 DeLaval steam turbine bearings, 156 Delta metal, 48 Demo bronze, 53, 54 Design of ball bearings, 174 journal bearings, 86—110 journal bearings cooled by forced lubrica- tion 109 without artificial cooling, 108 with water jacket for cooling, no knife-edge bearings, 136 oil grooves, loi oil rings, 98 sliding surfaces, 132 Designs, typical for journal bearings, 141— 166 Devices for anchoring babbitt, 89, 147 lubricating, 93 Diameter and length of bearings, ratio of, 86 Distribution of temperature in a bearing, 99 Dissipation of heat, 102 Double-row radial ball bearing, 186 Driller ball bearing mountings, 197 Dry surfaces, laws of friction for, 15 Ex B. metal, 49, 58 Electrical machinery practice in bearing pressures, 68 INDEX 231 Electric generator bearings, 141 Electric motor ball bearing mounting, 197 journal bearings, 141 roller bearings, 219 ". ngi e oil, specifications of, 124, 127, 128, 130 E: gines, reciprocating, type plan for forced lubrication, 154 steam, lubrication of cylinders of, 116 Fiber for bearings, 64 Filling metal, 56 Film of oil, breaking down point of, 25 pressure of, 25 suction of, 27 thickness of, 24 Filtration of oil, 120 Fits of bearings, 91, 92 Flat wearing surfaces, 133 Flexible roller bearings, 209 Floating sleeve steam turbine bearing, 152 Flooded lubrication for machine tools, 146 quantity of oil used, 115 steam turbine bearing arranged for, 153 Forced lubrication, 94 chart of, 107 design of bearings for, 109 point to introduce oil, 94 quantity of oil used, 115 type plan for reciprocating engines, 154 vertical steam turbine bearing ar- ranged for, 150 Formulas for moment of friction, 8 work of friction, 8 Friction, coefficients for journal bearings, 33. Locomotive eccentric strap, 161 rod stubs, 161, 162 slide valves, coefficient of friction for, 40 truck bearings, 158 Loss of power in bearings, 8 Lubricated surfaces, friction of, 15 Lubricants for ball bearings, 204—207 classification of, in Lubricating devices, classification of, 93 greases, classification of, in methods, comparison of, 20, 94 oils, classification of, in filtration of, 1 20 specifications for, 123 Lubrication, air, 138 forced, chart of, 107 of ball bearings, 204—207 of flexible roller bearings, 213 of sliding surf aces, 133 of steam engine cylinders, 116 of steam turbines, 120 theory of, 18 Machine oil, specifications for, 129 tool ball bearings, 195 bearings, 145 tool, temperature of bearings of, 84 Magnolia metal, 48, 57 Manganese bronze, 49, 53 Materials of ball bearings, 191 Mercury bearings, 64 Metal, anchoring of, 89, 147 on metal, coefficients of friction for, 14 Metal and wood, coefiicients of friction for, 12, 13 Metallic packing, 61 Metals, See Babbitts and Bronzes. Metals for automobile bearings, 60 bearings, analyses of, 48, 49, 50, 51, 54 characteristics of, 41 physical properties of, 53 selection of, 88 white, 45 combination of, for bearings and jour- nal, 42 composition of, 48, 49, 50, 51, 54 experiment with, for bearings, 44 influence of, on friction, 19 used in DeLaval turbine, 58 by Pennsylvania R. R. Co., 58 by U. S. Navy, 56, 57 by U. S. War Department, 56 variations in, for bearings, 63 wear of, in bearings, 54 Mineral grease, coefficients of friction for, 2>3 oil, coefficient of friction for, 33, 114 Moment of friction, 8 Morin's friction experiments, 9 laws of friction, 9 Motion, friction of, 6 Motor ball bearing mountings, 197, 198, 199 journal bearings, 141 Mountings of ball bearings, 195—203 Naval practice in bearing pressures, 66 white brass, 57 Navy bearing metals, 56 specifications for oils, 123 Oil, coefficients of friction for various kinds, 2>2>, 34, 35, 36 delivery capacity of rings, 97 INDEX 233 Oil, feed, rates of, for flooded lubrication, 115 forced lubrication, 107, 115 steam engine cylinders, 116 steam turbine steps, 120 film, breaking down point, 25 point of maximum pressure, 27 minimum pressure, 27 nearest approach, 27 pressure of, 25 suction of, 27 thickness of, film of, 24 filtration of, 120 and grease, comparison of friction of , 1 13, 114 grooves, 100 how to prevent atomizing of, 169 hole with left washer, 95 point to introduce in forced lubrication 94 quantities used, 107, 115, 116, 120 ring bearing, temperature rise of, 104, 105 rings, design of, 97 Oils, properties of, 112 specifications for, 122 Olive oil, coefficient of, friction for, 35, 114 Practice in use of bearing metals, 45, 56 Pressure and velocity, product of, 85 maximum point in film, 27 minimum point in film, 27 in oil film, 25 Pressures in automobile engine bearings, 75— 79 bearings, air compressor practice, 66 electrical machinery practice, 68 gas engine practice, 69, 74 German practice, 82 knife-edge bearings, 137 maximum safe for perfect film lubri- cation, 81 naval practice, 66 railroad practice, 65 rolling mill practice, 68 steam engine practice, 66 flexible roller bearings, 212 Product of pressure and velocity, 85 Proportions of automobile engine bearings 87 of journal bearings, 86 radial ball bearings, 191 Provisions for dissipating heat, 102 lubricating, 93 Pad lubrication, coefficients of friction for, 20, 36, 94 Parson's white brass, 54, 57 Pedestal bearings, typical design of, 141 Pennsylvania Railroad Company's bearing metals, 58 Permissible rise in temperature, 83 Phosphor bronze, 49, 53, 54, 56, 58, 60 Physical properties of bearing metals, 53 Pivot bearings, moment of friction of, 8 work of friction of, 8 step bearings, coefficient3 of friction of, 38 Plain roller thrust bearings, 221—228 test of, 224 Plastic bronze, 53, 54, 56 Plumbic bronze, 53, 54 Point to introduce oil with forced lubrication, 94 of nearest approach of bearing and jour- nal, 27 Power lost in friction, 8 Quantities of oil used for lubricating, 115 Race grooves in ball bearings, curvature of 176 Radial ball' bearings, cages for, 181 capacity of, 177 doubje-row, 186 friction of, 183 limits, 194 proportion of, 192 tolerances, 194 tests of, 184 two-row, 185, 187 types of, 180 Radiation of heat from bearings, 102 Railroad practice in bearing pressures, 65 use of bearing metals, 58, 59 Rape oil, coefficients of friction for, 36, 37 114 Ratio of bearing length to diameter, 86 Reciprocating engines, type plan for forced lubrication of, 154 234 INDEX Red brass, 6i metal, Allan, 48 Reducing arc of contact, effect of, 134 Rest, friction of, 6, 16 Ring oiling, 95 car box, 163 invention of, 140 Rise in temperature, permissible, 83 Roller bearings, classification of, 2 flexible rollers, 209-216 journal bearings, conical rollers, 219 cylindrical rollers, 217 plain thrust bearings, 221 thrust bearings with conical rollers, 228 Rollers, unit loads on, 174 Rolling friction, 173 mill, practice in bearing pressures, 68 Rubbing speed in automobile engine bear- ings, 80 relation between and rise in tempera ture, 104, 105, 107 with relation to pressure, 81 velocity, permissible, 82 Rules for bearing design, 106 Running fits for shafts, 91 Salgee metal, 48 Scale bearings, 136 Selection of bearing metal, 88 Seller's bearing, invention of, 140 Shonberg M. M. metal, 54, 57 Slack in bearing, how to take up, 166 Sleeve bearings, typical design of, 143 Sliding fits for shafts, 91 friction, theory of, 5 surfaces, design of, 132 lubrication of, 133 Solid lubricants, iii roller bearings, 217—228 Souther babbitt, 53, 54 Specifications for lard oil, 122 oils, U. S. Navy, 123 U. S. THIS BOOK IS DUE ON THE LAST DATE STAMPED BELOW AN INITIAL FINE OF 25 CENTS WILL BE ASSESSED FOR FAILURE TO RETURN THIS BOOK ON THE DATE DUE. THE PENALTY WILL INCREASE TO 50 CENTS ON THE FOURTH DAY AND TO $1.00 ON THE SEVENTH DAY OVERDUE. JUN5 "S* SSNOV'SOLf sgNeveoLU Book Slip-10m-8,'51(6813s4)458 ^^ 402235 Alford Bearings lubrication JUNS '5« H. iA% 119^3 and their TJ1061 JL53 402233 UNIVERSITY OF CALIFORNIA LIBRARY. 