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أخواني في الله أحضرت لكم كتاب Rolling Bearings
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Rolling bearings . 1 Unit conversions . 8 Foreword . 9 This is SKF 14 SKF – the knowledge engineering company 16 Principles of bearing selection and application . 18 A Bearing basics 21 Selecting rolling bearings 22 Terminology 23 Bearing types and designs . 26 Boundary dimensions . 40 Basic bearing designation system . 42 Basic selection criteria 46 B Selecting bearing size . 61 A systems approach to bearing selection . 62 Bearing life and load ratings . 63 Selecting bearing size using the life equations . 64 Dynamic bearing loads 84 Selecting bearing size using static load carrying capacity 87 Calculation examples . 90 SKF calculation tools . 92 SKF Engineering Consultancy Services . 94 SKF life testing 95 C Friction 97 Estimating the frictional moment . 98 The SKF model for calculating the frictional moment 99 Starting torque 114 Power loss and bearing temperature 114 D Speeds 117 Basics of bearing speed . 118 Reference speed . 118 Limiting speed 126 Special cases 127 Vibration generation at high speeds . 128 2E Bearing specifics . 131 Dimensions . 132 Tolerances 132 Bearing internal clearance . 149 Materials for rolling bearings . 150 F Design considerations . 159 Bearing arrangements . 160 Radial location of bearings . 165 Axial location of bearings 204 Design of associated components . 210 Selecting internal clearance or preload . 212 Sealing solutions 226 G Lubrication 239 Basics of lubrication . 240 Grease lubrication . 242 Lubricating greases 244 SKF greases 249 Relubrication . 252 Relubrication procedures 258 Oil lubrication . 262 H Mounting, dismounting and bearing care . 271 General 272 Mounting . 275 Dismounting 285 Bearing storage . 291 Inspection and cleaning . 291 Product data 292 1 Deep groove ball bearings 295 Product tables 1.1 Single row deep groove ball bearings 322 1.2 Capped single row deep groove ball bearings 346 1.3 ICOS oil sealed bearing units . 374 1.4 Single row deep groove ball bearings with a snap ring groove . 376 1.5 Single row deep groove ball bearings with a snap ring and shields . 382 1.6 Stainless steel deep groove ball bearings . 386 1.7 Capped stainless steel deep groove ball bearings . 394 1.8 Single row deep groove ball bearings with filling slots . 410 1.9 Single row deep groove ball bearings with filling slots and a snap ring 414 1.10 Double row deep groove ball bearings 416 2 Y-bearings (insert bearings) 421 Product tables 2.1 Y-bearings with grub screws, metric shafts . 458 2.2 Y-bearings with grub screws, inch shafts . 460 2.3 Y-bearings with an eccentric locking collar, metric shafts 464 2.4 Y-bearings with an eccentric locking collar, inch shafts 466 2.5 SKF ConCentra Y-bearings, metric shafts . 468 2.6 SKF ConCentra Y-bearings, inch shafts . 469 32.7 Y-bearings with a tapered bore on an adapter sleeve, metric shafts 470 2.8 Y-bearings with a tapered bore on an adapter sleeve, inch shafts 471 2.9 Y-bearings with a standard inner ring, metric shafts 472 3 Angular contact ball bearings . 475 Product tables 3.1 Single row angular contact ball bearings . 506 3.2 Double row angular contact ball bearings . 522 3.3 Capped double row angular contact ball bearings 526 3.4 Four-point contact ball bearings 530 4 Self-aligning ball bearings . 537 Product tables 4.1 Self-aligning ball bearings . 552 4.2 Sealed self-aligning ball bearings . 560 4.3 Self-aligning ball bearings with an extended inner ring 562 4.4 Self-aligning ball bearings on an adapter sleeve 564 5 Cylindrical roller bearings 567 Product tables 5.1 Single row cylindrical roller bearings 604 5.2 High-capacity cylindrical roller bearings 640 5.3 Single row full complement cylindrical roller bearings . 644 5.4 Double row full complement cylindrical roller bearings 656 5.5 Sealed double row full complement cylindrical roller bearings 668 6 Needle roller bearings . 673 Product tables 6.1 Needle roller and cage assemblies . 722 6.2 Drawn cup needle roller bearings . 730 6.3 Needle roller bearings with machined rings with flanges, without an inner ring . 744 6.4 Needle roller bearings with machined rings with flanges, with an inner ring 758 6.5 Needle roller bearings with machined rings without flanges, without an inner ring . 770 6.6 Needle roller bearings with machined rings without flanges, with an inner ring 774 6.7 Alignment needle roller bearings, without an inner ring . 776 6.8 Alignment needle roller bearings with an inner ring . 778 6.9 Needle roller / angular contact ball bearings . 780 6.10 Needle roller / thrust ball bearings, full complement thrust bearing 784 6.11 Needle roller / thrust ball bearings, thrust bearing with a cage 786 6.12 Needle roller / cylindrical roller thrust bearings 788 6.13 Needle roller bearing inner rings 790 6.14 Needle rollers . 794 7 Tapered roller bearings 797 Product tables 7.1 Metric single row tapered roller bearings . 824 7.2 Inch single row tapered roller bearings . 842 7.3 Single row tapered roller bearings with a flanged outer ring 864 7.4 Matched bearings arranged face-to-face . 866 47.5 Matched bearings arranged back-to-back 872 7.6 Matched bearings arranged in tandem . 876 8 Spherical roller bearings . 879 Product tables 8.1 Spherical roller bearings 904 8.2 Sealed spherical roller bearings . 928 8.3 Spherical roller bearings for vibratory applications . 936 8.4 Spherical roller bearings on an adapter sleeve . 940 8.5 Spherical roller bearings on a withdrawal sleeve . 946 8.6 Sealed spherical roller bearings on an adapter sleeve . 954 9 CARB toroidal roller bearings . 957 Product tables 9.1 CARB toroidal roller bearings 980 9.2 Sealed CARB toroidal roller bearings 996 9.3 CARB toroidal roller bearings on an adapter sleeve . 1000 9.4 CARB toroidal roller bearings on a withdrawal sleeve . 1004 10 Thrust ball bearings . 1009 Product tables 10.1 Single direction thrust ball bearings . 1016 10.2 Single direction thrust ball bearings with a sphered housing washer . 1026 10.3 Double direction thrust ball bearings 1030 10.4 Double direction thrust ball bearings with sphered housing washers . 1034 11 Cylindrical roller thrust bearings 1037 Product tables 11.1 Cylindrical roller thrust bearings 1048 12 Needle roller thrust bearings . 1057 Product tables 12.1 Needle roller and cage thrust assemblies and appropriate washers 1070 12.2 Needle roller thrust bearings with a centring flange and appropriate washers . 1074 13 Spherical roller thrust bearings . 1077 Product tables 13.1 Spherical roller thrust bearings . 1090 14 Track runner bearings . 1099 Product tables 14.1 Single row cam rollers 1126 14.2 Double row cam rollers . 1128 14.3 Support rollers without flange rings, without an inner ring . 1130 14.4 Support rollers without flange rings, with an inner ring 1132 14.5 Support rollers with flange rings, with an inner ring 1134 14.6 Cam followers . 1140 15 Engineered products 1149 15A Sensor bearing units 1151 Product tables 15A.1 Motor encoder units 1166 515B Bearings for extreme temperatures . 1169 Product tables 15B.1 Single row deep groove ball bearings for extreme temperatures 1178 15B.2 Y-bearings for extreme temperatures, metric shafts 1182 15B.3 Y-bearings for extreme temperatures, inch shafts 1183 15C Bearings with Solid Oil . 1185 15D INSOCOAT bearings . 1191 Product tables 15D.1 INSOCOAT deep groove ball bearings 1198 15D.2 INSOCOAT cylindrical roller bearings 1200 15E Hybrid bearings . 1205 Product tables 15E.1 Hybrid deep groove ball bearings . 1216 15E.2 Sealed hybrid deep groove ball bearings 1218 15E.3 XL hybrid deep groove ball bearings . 1222 15E.4 Hybrid cylindrical roller bearings 1224 15F NoWear coated bearings . 1227 15G Polymer ball bearings . 1233 Product tables 15G.1 Polymer single row deep groove ball bearings . 1248 15G.2 Polymer thrust ball bearings . 1252 16 Bearing accessories . 1255 Product tables 16.1 Adapter sleeves for metric shafts . 1276 16.2 Adapter sleeves for inch shafts . 1284 16.3 Adapter sleeves with inch dimensions 1290 16.4 Withdrawal sleeves 1296 16.5 KM(L) and HM T lock nuts 1302 16.6 MB(L) lock washers . 1304 16.7 HM(E) lock nuts 1306 16.8 MS locking clips 1310 16.9 N and AN inch lock nuts . 1312 16.10 W inch lock washers 1316 16.11 PL inch locking plates . 1318 16.12 KMK lock nuts with an integral locking device 1319 16.13 KMFE lock nuts with a locking screw . 1320 16.14 KMT precision lock nuts with locking pins . 1322 16.15 KMTA precision lock nuts with locking pins 1324 16.16 KMD precision lock nuts with axial locking screws 1326 Indexes . 1328 Text index . 1329 Product index . Indexes Text index 1329 Product index 1350Text index A A angular contact ball bearings 479, 504 lock nuts and locking devices 1266, 1275 motor encoder units 1161 track runner bearings 1103, 1107, 1125 ABMA standards 41 abutment collars 206 abutments dimensions 208–209 tolerances 169, 200–202 AC 504 AC current protection with hybrid bearings 1206, 1212 protection with INSOCOAT bearings 1195 AC motors 1152 accessories 1255–1327 acetone 1237 acids resistance of polymer ball bearings 1237 resistance of seal materials 156–157 acrylonitrile-butadiene rubber (NBR) 155 hydrogenated acrylonitrile-butadiene rubber (HNBR) 156 ADA 580, 602 adapter sleeves 1256–1260, 1276–1295 axial load carrying capacity 894 bearing seat tolerances 200–201 coatings 1256 designation system 1274–1275 designs and variants 1256–1259 dimension standards 1260 dismounting bearings 288–289 for CARB toroidal roller bearings 975, 1000–1003, 1259 for inch shafts 1284–1289 for metric shafts 1276–1283 for oil injection 1256–1258 for self-aligning ball bearings 546–547, 564–565, 1259 for spherical roller bearings 898–899, 940–945, 954–955, 1259 for Y-bearings 422–423, 427, 470–471 mounting bearings 278 on a stepped shaft 207, 1256 product tables 1276–1295 spacer rings 207, 1256 tapers 1260 threads 1260 tolerances 1260 with inch dimensions 1290–1295 adapters 1108, 1110 ADB 580, 602 additives in grease 244, 248, 254 in oil 265–266 adjusted bearing arrangement 163 adjusted reference speed 120 adjustment factors 121–124 calculation examples 125 compared to limiting speed 126 adjusting bearings angular contact ball bearings 498 for internal clearance 277 for preload 218–220 procedures 221–225 tapered roller bearings 816–817 AFBMA standards 41 agricultural applications specification life 83 AH 457 alcohols 1237 alignment needle roller bearings 683, 776–779 cages 693–695, 714 designs and variants 683 dimension standards 703 fits and tolerance classes 716 internal clearance 702–703 loads 711 misalignment 52, 702–703 mounting 718 product tables 776–779 temperature limits 714 tolerances 702–703 aliphatic hydrocarbons resistance of fluoro rubber 156 resistance of polymer ball bearings 1237 alkalis resistance of polymer ball bearings 1237 resistance of polyurethane 157 Allen wrenches † hexagonal keys aluminium oxide (Al2O3) in polymer ball bearings 1237, 1246 on INSOCOAT bearings (coating) 1192 ambient temperature 240 amines 156 ammonia 152, 154 AMP Superseal connectors 1154, 1155, 1161 angle rings 571, 604–639 angle series 40 angular contact ball bearings 475–535 adjustment during mounting 221–225, 277 assortment 476, 500–502 axial load carrying capacity 476, 498 bearing supports 160–163 cages 480–481, 497 combined with a needle roller bearing 684–685, 780–783 contact angle 476, 486–487, 498, 504 design provisions 498–499 designation system 504–505 designs and variants 28, 476–484 dimension standards 486–487 dimensional stability 497 double row bearings 478–479, 522–529 for universal matching 477, 500, 506–521 four-point contact ball bearings 480, 530–535 internal clearance 486–490 Designation prefixes and suffixes are shown in bold. 1329 IndexText index load ratio 498, 499 loads 51, 476, 492–496, 498 lubrication 497 matched bearings 478, 495, 498 misalignment 486–487 NoWear coated bearings 1230 performance classes 485 permissible speed 497 preload 215–220, 486–487, 489, 498 product tables 506–535 sealing solutions 482–483, 497, 526–529 SKF Energy Efficient (E2) bearings 485 SKF Explorer bearings 485 temperature limits 497 tolerances 486–487 with a two-piece inner ring 479, 501 with Solid Oil 1185–1189 angular contact thrust ball bearings designs and variants 34 loads 49 angular misalignment † misalignment anhydrous hydrofluorides 156 annular grooves 883 ANSI standards 41 anti-fretting agents 275 anti-wear additives for NoWear coated bearings 1231 in grease 248 in oil 265 applications fits and tolerance classes 172–175 specification life 83 aromatic hydrocarbons resistance of fluoro rubber 156 resistance of polymer ball bearings 1237 articulated joints 1165 AS 721 ASR 721 associated components abutment and fillet dimensions 208–209 accuracy measurements 273 for locating bearings 205–207 provisions for mounting and dismounting 210–211 raceway specifications 210 vibration generation 128 automatic lubricators 261 automatic particle counter method 74–76, 78 AW additives † anti-wear additives axial clamp seals 235 axial clearance 1086 axial displacement adjustment method 222–223 considerations when selecting bearings 55 considerations when selecting fits 165, 167–168 effect of preload 219–220, 223 in bearing arrangements 160–162, 164, 174–175, 204 axial drive-up measurement 282 values for CARB toroidal roller bearings 977 values for self-aligning ball bearings 549 values for spherical roller bearings 901 axial gap 1121 axial internal clearance 149–150 values for angular contact ball bearings 488–490 values for cylindrical roller bearings 591–592 values for tapered roller bearings 810 axial loads 48–51 axial location 204–209 axial play 206 axial run-out 200, 202, 210 axleboxes fits and tolerance classes 172–173, 175 specification life 83 suitable cage types 154 B B angular contact ball bearings 504 lock nuts and locking devices 1275 motor encoder units 1161 polymer ball bearings 1246 sleeves 1258, 1275 tapered roller bearings 822 track runner bearings 1105–1106, 1125 B20 505 back-to-back arrangements with angular contact ball bearings 215–216, 218, 478, 498 with deep groove ball bearings 309 with tapered roller bearings 215–216, 218, 802, 872–875 bainite-hardened rings 603 ball and cage assemblies 1010 ball bearings compared to roller bearings 48, 54 designation system 43 base oil viscosity 246 basic dynamic load rating 63, 64–65 basic rating life 64 calculation example 90 basic static load rating 64, 88–89 bearing-shaft-housing systems 22, 24, 226–227 bearing arrangements 160–164 adjusted 163 floating 164 locating/non-locating 160–162 bearing damage 87 electrical erosion 1192, 1209 false brinelling 1186, 1206 fretting corrosion 165 smearing 1207, 1213, 1228, 1231 spalling 1206, 1229 wear 165 bearing kits 547 bearing life † life bearing mean diameter 23 bearing seats dimensional accuracy 200–203 running accuracy 167, 200–202 surface roughness 204 bearing series 43, 45 bearing units with Solid Oil 1185–1189 with Y-bearings 422 bearing washers † washers bearings handling 274 selection criteria 22, 46–59 size categories 275, 285 storage 291 terminology 23–25 types 26–36 Beast 93 Belleville washers † cup springs bellows 226 belt drives 84 fits and tolerance classes 174 load conditions 166 BF 720 black oxide coating on cylindrical roller bearings 575, 603 on Y-bearings 425 BMB 1161 BMO 1161 bore diameter 40 tolerance definitions 134 borosilicate glass 1237, 1246 boundary dimensions 23, 40–41 Designation prefixes and suffixes are shown in bold. 1330brass cage types 37–38 in polymer ball bearings 1237, 1246 material properties 152–153 BS2 884, 902 C C tapered roller bearings 823 Y-bearings 457 C08 CARB toroidal roller bearings 978 spherical roller bearings 903 C083 903 C084 903 C1 150 deep groove ball bearings 315, 321 C2 150 angular contact ball bearings 489–490, 505 CARB toroidal roller bearings 966–967, 978 cylindrical roller bearings 590, 603 deep groove ball bearings 314–315, 321 needle roller bearings 710, 721 self-aligning ball bearings 543, 550 spherical roller bearings 892–893, 903 C2H 505 C2L 505 C3 150 angular contact ball bearings 489–490, 505 CARB toroidal roller bearings 966–967, 978 cylindrical roller bearings 590, 603 deep groove ball bearings 314–315, 321 needle roller bearings 710, 721 self-aligning ball bearings 543, 550 spherical roller bearings 892–893, 903 C3P 1214 C4 150 angular contact ball bearings 489–490, 505 CARB toroidal roller bearings 966–967, 978 cylindrical roller bearings 590, 603 deep groove ball bearings 314–315, 321 needle roller bearings 710, 721 spherical roller bearings 892–893, 903 C5 150 CARB toroidal roller bearings 966–967, 978 cylindrical roller bearings 590, 603 deep groove ball bearings 314–315, 321 spherical roller bearings 892–893, 903 CA angular contact ball bearings 477, 488, 505 spherical roller bearings 882, 902 CAC 902 cages guidance 39 lubrication considerations 240 materials 152–155 types 37–39 calculation tools 92–93 cam followers 1104–1110, 1140–1147 accessories 1108–1110 cages 1111, 1119 designation system 1124–1125 designs and variants 1104–1107 dimension standards 1115 fits and tolerance classes 1120 internal clearance 1114–1115 loads 1116–1117 lubrication 1112–1113, 1119 mounting 1106, 1120, 1122–1123 outer ring running surfaces 1106–1107 product tables 1140–1147 sealing solutions 1105–1107, 1119, 1142–1147 support surfaces 1120 temperature limits 1119 tolerances 1114–1115, 1118 cam rollers 1100, 1126–1129 cages 1111, 1119 designation system 1124–1125 designs and variants 1100 dimension standards 1114 double row bearings 1100, 1128–1129 guide flanges 1121 internal clearance 1114–1115 loads 1116–1117 lubrication 1112–1113, 1119 outer ring running surfaces 1100, 1114 product tables 1126–1129 sealing solutions 1100, 1119, 1126–1129 support surfaces 1120 temperature limits 1119 tolerances 1114–1115, 1118 capped bearings heating 276 shelf life 291 types 58 washing 273 capping devices 24, 58–59 CARB toroidal roller bearings 957–1007 abutment dimensions 209, 974 applications 960, 963, 971 assortment 960 axial displacement 55, 964–965, 968–971, 974 axial location 204, 1266 bearing arrangements 162 cages 961, 963, 973 clearance reduction 969–971, 977 designation system 978 designs and variants 33, 958–963 dimension standards 964 dimensional stability 973 drive-up data 977 full complement bearings 961, 962 housings 976 in vertical shafts 976 internal clearance 964–967, 968–971 loads 959, 961, 972 lubrication 962, 973 measuring the inner ring expansion 283 misalignment 964–965, 968, 970–971, 974 mounting 963, 971, 976–977 NoWear coated bearings 1230 on a withdrawal sleeve 975, 1004–1007 on an adapter sleeve 975, 1000–1003, 1259, 1266 on start-up 972 performance classes 963 permissible speed 973 preload 976 product tables 980–1007 roller design 959 sealing solutions 962, 973, 996–999 SKF Explorer bearings 963 temperature limits 972, 973 tolerances 964–965 carbon coating 1228, 1231 case-hardened rings 603, 822 case-hardening steels 151 CB 477, 488, 505 CC 477, 488, 505 CC(J) 882, 902 CCJA 887, 902 centralized lubrication systems 261 centrifuges 83 centring flanges in needle roller bearings 679 in needle roller thrust bearings 1059, 1064, 1068 ceramics in hybrid bearings 1206–1207 in polymer ball bearings 1246 material properties 152 Designation prefixes and suffixes are shown in bold. 1331 IndexText index chamfers boundary dimensions 40 dimension limits 133, 147–148 dimension standards 132 tolerance definitions 134 chemical industry 1234 chemical resistance of cage materials 152–154 of polymer ball bearings 1237 of seal materials 155–157 circularity 203 circulating oil 263 applications 254 oil change interval 267 CJ 902 CL0 823 CL00 823 CL7A 823 CL7C 800–801, 823 cleaning 273, 291 clearance † internal clearance clearance reduction from a temperature difference 214 from an interference fit 213–214 measuring with a feeler gauge 280 values for CARB toroidal roller bearings 977 values for spherical roller bearings 901 CLN 823 CN 150 cylindrical roller bearings 603 deep groove ball bearings 321 needle roller bearings 721 CNL 505 coatings 157 aluminium oxide (Al2O3) 1192 black oxide 425, 575, 603 manganese phosphate 1171–1172 molybdenum 1211 NoWear (carbon) 1228 phosphate 1256, 1262 polytetrafluoroethylene (PTFE) 887 zinc 424–425 zinc chromate 1211 coefficient of friction 98 coefficient of thermal expansion considerations when selecting fits 168, 170 of polymers in polymer ball bearings 1242–1243 of silicon nitride compared to steel 1207 cold dismounting 285 combined loads 50–51 combined needle roller bearings 683–690, 780–789 abutment dimensions 715 cages 693–695, 714 designs and variants 683–690 dimension standards 704–705 fits and tolerance classes 717 internal clearance 704–705 loads 712–713 lubrication 699, 714 misalignment 704–705 product tables 780–789 sealing solutions 698, 784–789 compressed air 1176 compressors and hybrid bearings 1207 and NoWear coated bearings 1229 suitable cage types 152, 154 ConCentra Y-bearings † SKF ConCentra Y-bearings cones 798, 821 connecting rods 165, 676 consistency 246 effect of mixing greases 249 effect of temperature changes 244–245 contact angle 25 angle series 40 effect on axial load carrying capacity 50 in angular contact ball bearings 476, 486–487 in tapered roller bearings 798, 820, 822 contact seals 228–230, 234–236 contact stresses 64 contamination effect on relubrication interval 253 ISO classification 74–75, 78 contamination factor 74–80 contamination levels for grease lubrication 74, 76 for oil lubrication 74, 77 continuous casters 960 continuous relubrication 253–254, 258, 261 conveyors and track runner bearings 1100 fits and tolerance classes 172–174 load conditions 166 specification life 83 cooling factor 114 coronet cages 1171 corrosion resistance of grease 248 of NoWear coated bearings 1229 of polymer ball bearings 1234 of stainless steel deep groove ball bearings 296 cranes fits and tolerance classes 174 load conditions 87 specification life 83 crank pins 676 creep 165–166 with polymer ball bearings 1234 cross-locating bearing arrangements adjusted 163 floating 164 located axially 204 crushers load conditions 166 specification life 83 cryogenic temperatures 1211 CS 884, 902 CS2 884, 902 CS5 CARB toroidal roller bearings 962, 978 spherical roller bearings 884, 902 cup springs 236, 686, 690 cups 798, 821 CV 602 cylindrical roller and cage thrust assemblies 1039, 1042, 1046 cylindrical roller bearings 567–671 applications 569, 575 axial displacement 55, 585, 588–589 axial load carrying capacity 583, 596–597 axial location 204 bearing arrangements 160–161, 164 cages 575–577, 582, 599 designation system 602–603 designs and variants 29–30, 568–582 dimension standards 584, 586–587 dismounting 286 double row bearings 577, 579–581, 656–671 full complement bearings 578–581, 644–671 high-capacity bearings 575–577, 640–643 hybrid bearings 1210, 1224–1225 INSOCOAT bearings 1191–1197, 1200–1203 internal clearance 584, 586–587, 590–592 loads 48, 50, 594–597 lubrication 254, 580–581, 599 matched bearings 581 misalignment 585–587 mounting 276, 601 NoWear coated bearings 1230 performance classes 583 permissible speed 600 preload considerations 221 product tables 604–671 Designation prefixes and suffixes are shown in bold. 1332sealing solutions 579–581, 599, 668–671 SKF Energy Efficient (E2) bearings 583 SKF Explorer bearings 583 temperature limits 599 tolerances 584, 586–587 with a retaining ring 578, 579, 602 with a snap ring groove 573, 580 with an angle ring 571, 604–639 with an extended inner ring 574 with locating slots 573 with Solid Oil 1185–1189 cylindrical roller thrust bearings 1037–1055 abutment dimensions 1046 cages 1040, 1045 combined with a needle roller bearing 689–690, 788–789 designation system 1047 designs and variants 34, 1038–1040 dimension standards 1041 double direction bearings 1038–1039 fits and tolerance classes 1046 loads 47, 49, 1044 misalignment 1041 permissible speed 1045 product tables 1048–1055 single direction bearings 1038 temperature limits 1045 tolerances 1041–1043 washers 1038–1039, 1042, 1045, 1046 with raceways on shafts and in housings 1046 D D angular contact ball bearings 479, 504 needle roller bearings 720 polymer ball bearings 1246 sleeves 1275 D/W 320 DA 581, 602 DB angular contact ball bearings 505 deep groove ball bearings 321 tapered roller bearings 823 DC current protection with hybrid bearings 1206, 1212 protection with INSOCOAT bearings 1192, 1195 deep groove ball bearings 295–419 axial displacement 55 bearing arrangements 160–162 cages 298–299, 318 designation system 320–321 designs and variants 26, 296–309 dimension standards 312–313 dimensional stability 318 double row bearings 298, 416–419 for extreme temperatures 1170–1181 grease life 306–307 hybrid bearings 1209, 1216–1223 in sensor bearing units 1151–1167 INSOCOAT bearings 1191–1199 internal clearance 312–315 loads 50–51, 316–317 lubrication 304–305, 318 matched bearings 309, 318 misalignment 312–313 NoWear coated bearings 1230 performance classes 310 permissible speed 53, 318 polymer ball bearings 1233–1251 preload considerations 215, 221, 224 product tables 322–419 sealing solutions 230, 300–307, 318, 346–375 SKF Energy Efficient (E2) bearings 310 SKF Explorer bearings 310 SKF Quiet Running bearings 309 stainless steel bearings 296–297, 386–409 temperature limits 300, 318 tolerances 312–313 with a snap ring groove 308, 376–385, 414–415 with filling slots 297, 410–415 with Solid Oil 1185–1189 defect frequencies † skf.com/bearingcalculator density 1206–1207 designation systems 42–45 DF angular contact ball bearings 505 deep groove ball bearings 321 tapered roller bearings 823 dial indicators 277, 282 diameter series identification 132, 136 in ISO general plans 40–41, 42–43 dielectric constant 152 differentials and tapered roller bearings 800 preload considerations 214, 217 stiffness 54 dimension series 40–41, 42–43 dimensional accuracy of bearings 132–135, 137–148 of seats and abutments 200–203 dimensional stability 82 direct drive control 1165 direction of load indeterminate 165, 172–175 dismounting 285–290 cold 285 considerations when selecting bearings 56–57 considerations when selecting fits 168 design provisions 210–211 from a cylindrical shaft seat 285–286 from a tapered shaft seat 287 from a withdrawal sleeve 290 from an adapter sleeve 288–289 with heat 286 distance rings 24 double direction bearings angular contact thrust ball bearings 34, 49, 53 cylindrical roller thrust bearings 34, 1038–1039 needle roller thrust bearings 34, 1058–1059 thrust ball bearings 33, 48, 1010–1011 double row angular contact ball bearings 478–479, 522–529 assortment 501 bearing arrangements 160–161 cages 481, 497 contact angle 487 designation system 504–505 designs and variants 478–479, 481–483 dimension standards 487 dimensional stability 497 internal clearance 487, 489 loads 492–493 lubrication 482–483 misalignment 486–487 product tables 522–529 sealing solutions 482–483, 526–529 temperature limits 497 tolerances 486–487 double row cam rollers 1100, 1128–1129 cages 1111, 1119 design 1100 designation system 1124–1125 dimension standards 1114 dimensional stability 1119 internal clearance 1114–1115 loads 1116–1117 lubrication 1112–1113 outer ring running surfaces 1100, 1114 product table 1128–1129 sealing solutions 1100, 1119, 1128–1129 temperature limits 1119 Designation prefixes and suffixes are shown in bold. 1333 IndexText index tolerances 1114–1115, 1118 double row cylindrical roller bearings 579–581, 656–671 axial displacement 588–589 designs and variants 577, 579–581 dimension standards 587 dimensional stability 599 high-capacity bearings 577 internal clearance 586–587, 590 loads 594–597 lubrication 580–581, 599 misalignment 586–587 product tables 656–671 sealing solutions 580–581, 599, 668–671 temperature limits 599 tolerances 586–587 double row deep groove ball bearings 298, 416–419 cages 298–299, 318 designation system 320–321 designs and variants 298 dimension standards 313 dimensional stability 318 internal clearance 312–314 loads 298, 316–317 misalignment 312–313 permissible speed 318 product table 416–419 temperature limits 318 tolerances 312–313 with Solid Oil 1185–1189 double row needle roller bearings drawn cup needle roller bearings 678 needle roller and cage assemblies 675 with machined rings 681–682 double row tapered roller bearings 800 DR 581, 603 drag losses 100, 110–112 drawn cup needle roller bearings 677–679, 730–743 cages 693–695, 714 designs and variants 677–679 dimension standards 701 dimensional stability 714 double row bearings 678 fits and tolerance classes 716 in combination with a needle roller thrust bearing 1060 loads 711 lubrication 679, 699 misalignment 700–701 mounting 718 product tables 730–743 sealing solutions 696–697, 730–743 temperature limits 714 tolerances 701, 707 drifts 285 drive-up † axial drive-up drive-up method † SKF Drive-up Method dropping point 244 dry lubricants in bearings for extreme temperatures 1171 dry running 1229 drying cylinders and CARB toroidal roller bearings 971 fits and tolerance classes 175 DS 720 DT angular contact ball bearings 505 deep groove ball bearings 321 tapered roller bearings 823 dust 300 duty intervals 81, 85–86 calculation example 91–92 dynamic bearing loads 84–86 dynamic load rating 63 dynamic seals 226 E E angular contact ball bearings 504 deep groove ball bearings 320 self-aligning ball bearings 550 sleeves 1259, 1275 spherical roller bearings 882–883, 887, 902 spherical roller thrust bearings 1078, 1088, 1089 E2 angular contact ball bearings 485, 504 cylindrical roller bearings 583, 602 deep groove ball bearings 310, 320 spherical roller bearings 883, 889, 896, 902 tapered roller bearings 804, 822 Y-bearings 438, 456 EC 602 eccentric collars 1104, 1122 eccentric locking collars 425, 464–467 EGS 720 EH 1259, 1275 EJA 887, 902 EL 1259, 1275 elastic deformation 217–220 elasto-hydrodynamic lubrication 99 electric current protection with hybrid bearings 1206, 1212 protection with INSOCOAT bearings 1192, 1193, 1195 electric motors and hybrid bearings 1206, 1208, 1210 and INSOCOAT bearings 1192 and NoWear coated bearings 1229 fits and tolerance classes 172–175 motor encoder units 1157 preload considerations 214, 224–225 specification life 83 electric vehicles 1165 electrical erosion protection with hybrid bearings 1209 protection with INSOCOAT bearings 1192 electrical industry 1234 electromagnetic environments 1155 encoder units motor encoder units 1152–1161 roller encoder units 1162 steering encoder units 1163–1164 end plates 24, 205, 207 energy efficient bearings † SKF Energy Efficient (E2) bearings envelope requirement 169 EP additives † extreme pressure additives equivalent dynamic bearing load 85–86 equivalent static bearing load 88 escape holes † grease escape holes esters 154, 156 ethers 156 excitation 128 exciters 888 Explorer bearings † SKF Explorer bearings extended inner rings in cylindrical roller bearings 574 in self-aligning ball bearings 538, 540 in Y-bearings 422, 424–427 external forces 84 external seals 231–236 extreme pressure additives effect on cage materials 154 effect on viscosity ratio 73 for NoWear coated bearings 1231 in grease 248, 254 in oil 265, 266 extreme temperature bearings 1169–1183 applications 1171 associated components 1175 assortment 1170 deep groove ball bearings 1170–1181 Designation prefixes and suffixes are shown in bold. 1334designation system 1176 designs and variants 1170–1172 dimension standards 1173 internal clearance 1171, 1173–1174 limiting speed 1171 loads 1171, 1174 lubrication 1171, 1176 maintenance 1176 misalignment 1173 mounting 1173 product tables 1178–1183 running-in period 1171 sealing solutions 1171–1172, 1175 temperature limits 1171 tolerances 1173–1174 Y-bearings 1170–1176, 1182–1183 eye bolts 274, 903 F F angular contact ball bearings 481, 504 bearings for extreme temperatures 1176 spherical roller bearings 902 spherical roller thrust bearings 1089 thrust ball bearings 1011, 1015 Y-bearings 429, 457 F1 1214 F3 1089 FA angular contact ball bearings 504 spherical roller bearings 902 face-to-face arrangements with angular contact ball bearings 215–216, 218, 478, 498 with deep groove ball bearings 309 with tapered roller bearings 215–216, 218, 802, 866–871 failure 63 failure probability 63, 65 false brinelling 1206 fans 958, 1229 fastening elements 1264–1265 fatigue † metal fatigue fatigue load limit 64–65 feeler gauges 280 felt seals 236 fillets 208 filling grade † grease fills filling slot bearings 297, 410–415 cages 298–299, 318 designs and variants 297, 308 dimension standards 312–313 dimensional stability 318 internal clearance 312–314 loads 297, 316–317 misalignment 312–313 permissible speed 297, 318 product tables 410–415 sealing solutions 301, 308, 410–415 temperature limits 318 tolerances 312–313 with a snap ring groove 308, 414–415 filter rating 74–75 filtration ratio 76–77 fits for housings 171, 174–175 for shafts 171–174, 176–177 selection criteria 165–168 tolerance tables 178–199 fitting slots 454 five-lip (5-lip) seals 430 FKM † fluoro rubber (FKM) flange rings 1102–1104, 1105–1107 flanged bearings 801, 822, 864–865 flanges in cylindrical roller bearings 570–574, 578, 579–580 in needle roller bearings 680–681, 688, 718 in spherical roller bearings 882–883 in tapered roller bearings 798–801, 817 flingers in Y-bearings 429 with grease lubrication 259 with oil lubrication 232–233 floating bearing arrangements 164 fluctuating loads 81 fluoro rubber (FKM) 156 food and beverage industry and bearings with Solid Oil 1187 and polymer ball bearings 1234 and Y-bearings 424 food-compatible seals 424 food-grade lubricants in bearings with Solid Oil 1187 in Y-bearings 424, 431, 434 form tolerances † geometrical tolerances four-point contact ball bearings 480, 530–535 assortment 502 cages 481 contact angle 487 design 480–481, 484 designation system 504–505 dimension standards 487 dimensional stability 497 in vertical shafts 499 internal clearance 487, 490, 499 load ratio 499 loads 492–493 misalignment 486–487 product table 530–535 temperature limits 497 tolerances 486–487 with locating slots 484, 499, 530–535 four-row tapered roller bearings 800 frequency converters 1192 fretting corrosion 165 friction 97–115 considerations when selecting bearings 54 frictional moment drag losses 100, 110–112 effect of clearance/preload 212 estimation 98 influencing factors 113 of seals 109 of SKF Energy Efficient (E2) bearings 113 power loss 114 preload adjustment method 224 rolling frictional moment 100–102, 104–108 running-in period 113 sliding frictional moment 103–108 starting torque 114 fuel pumps 1207 full complement bearings CARB toroidal roller bearings 961, 962 combined needle roller bearings 685–687, 784–785 double row cylindrical roller bearings 579–581, 656–671 needle roller bearings 677–679 polymer ball bearings 1234–1235, 1246 single row cylindrical roller bearings 578, 644–655 full-film lubrication 241 effect on sliding frictional moment 103 furnaces 569 G G angular contact ball bearings 477, 488, 505 sleeves 1275 Y-bearings 457 G2 708, 721 Designation prefixes and suffixes are shown in bold. 1335 IndexText index GA 477, 489, 505 gap-type seals 228, 231 gasoline 1237 gauges for associated components 203, 273 for needle rollers 707–709 GB 477, 489, 505 GC 477, 489, 505 gears and NoWear coated bearings 1229 design provisions 206, 217 fits and tolerance classes 172–173 load conditions 81, 84 specification life 83 GEM9 CARB toroidal roller bearings 962, 978 spherical roller bearings 885, 903 general plans 40–41 generators and hybrid bearings 1206, 1208, 1209 and INSOCOAT bearings 1192 specification life 83 geometric centres 814 geometrical tolerances for bearings 132–135, 137–144 for seats and abutments 200–203 g-forces 1186 GJN 304–305, 321 glass 1236, 1237, 1246 glass fibre reinforced polymers 153–155 gloves 274 glycol 1171 GPS tracking systems 1165 GR 457 graphite as a dry lubricant 1171 as a solid lubricant additive 248, 254 grease escape holes 259, 260 grease fills effect on frictional moment 113 initial fill 242, 248 renewal 260 replenishment 258, 260 grease fittings 1108–1109 grease life 252 for capped deep groove ball bearings 306–307 for capped Y-bearings 432–433 for sealed hybrid bearings 1209 for sealed spherical roller bearings 885 grease lubrication 242–261 bearing operating conditions 242–243 contamination levels 74–76 effect on reference speed 120 greases 244–251 protection against corrosion 248 relubrication 252–261 running-in period 242 grease performance factor 305–306 greases additives 248 base oil viscosity 246 consistency classes 246 load carrying ability 248 miscibility 249 SKF greases 247, 249–251 SKF traffic light concept 244–247 grinding spindles and sensor bearing units 1165 preload considerations 225 stiffness 54 grub screw locking 424–425, 458–462 grub screws 448–449, 452, 454 GS cylindrical roller thrust bearings 1039, 1042, 1047 needle roller thrust bearings 1061, 1068, 1069 gudgeon pins 676 guide flanges 25, 1121 guide rings 881, 882–883 guiding sleeves 276 GWF 483, 505 H H lock nuts and locking devices 1275 needle roller bearings 721 sleeves 1257, 1275 HA1 cylindrical roller bearings 603 tapered roller bearings 822 HA3 CARB toroidal roller bearings 978 cylindrical roller bearings 603 spherical roller bearings 903 tapered roller bearings 822 Hall effect cells 1153, 1155, 1164 halogenic hydrocarbons 1237 hardness of bearing steels 151–152 of NoWear 1228 of raceways on shafts and in housings 210 of seal counterfaces 234 of silicon nitride 152, 1206–1207 HB 1258, 1275 HB1 cylindrical roller bearings 603 cylindrical roller thrust bearings 1047 HC5 1214 heat flow density 118–119 heat stabilization 151 classes 82 heat treatment 151–152 heating rings 286 height 40 tolerance definitions 135 height series 40, 42–43 hexagonal keys for track runner bearings 1106–1107, 1122 for Y-bearings 451–452, 454 hexagonal nuts 1108–1109, 1122 high temperature bearings † extreme temperature bearings high-capacity bearings 575–577, 640–643 HN1 cylindrical roller bearings 603 tapered roller bearings 822 HN3 822 HNBR † hydrogenated acrylonitrile-butadiene rubber (HNBR) hollow shafts 176–177 hook spanners 278, 290, 453 hot dismounting 286 hot mounting 276 hotplates 276 housing bore diameter 24 housing covers 24, 205 housing seats 24, 171 housing washers 25 in cylindrical roller thrust bearings 1038–1039, 1042, 1045, 1046 in needle roller thrust bearings 1060–1061, 1068 in spherical roller thrust bearings 1078–1079, 1084 in thrust ball bearings 1010–1011, 1014 housings 24 fits and tolerance classes 174–175 for CARB toroidal roller bearings 976 for self-aligning ball bearings 547 for spherical roller bearings 899 resultant fits 190–199 HR 1246 HT 304–305, 321 Designation prefixes and suffixes are shown in bold. 1336hub units and tapered roller bearings 800 fits and tolerance classes 174 load conditions 166 material properties 151 humidity 291 HV 424, 457 hybrid bearings 1205–1225 assortment 1208 axial displacement 1212 cages 1207, 1211, 1214 coatings 1211 compared to bearings with steel rolling elements 1206–1207, 1209, 1213 considerations for frictional moment 113 cylindrical roller bearings 1210, 1224–1225 deep groove ball bearings 1209, 1216–1223 designation system 1214 designs and variants 1206–1211 dimension standards 1212 dimensional stability 1214 electrical properties 1206, 1212 for very low temperatures 1207 internal clearance 1212 loads 1213 lubrication 241, 1206–1207, 1209, 1214 misalignment 1212 performance class 1209 permissible speed 1207, 1214 preload 1206, 1213 product tables 1216–1225 quiet running bearings 1213 sealing solutions 1208, 1209, 1214, 1218–1221 SKF Explorer bearings 1209 temperature limits 1207, 1211, 1214 tolerances 1212 hybrid vehicles 1165 hydraulic fluids 156 hydraulic nuts for adapter sleeves 1256, 1276–1295 for dismounting bearings 288–290 for mounting bearings 278–279, 282 for withdrawal sleeves 1261, 1296–1301 hydraulic pumps 1229 hydrocarbons 1237 hydrodynamic films effect of speed 127 effect of temperature 125 effect of viscosity 241, 265 hydrofluoric acid 1237 hydrogenated acrylonitrile-butadiene rubber (HNBR) 156 I ICOS 320 ICOS oil sealed bearing units 304, 374–375 impact loads 888 impact spanners 278, 290 impulse rings 1152–1153, 1158, 1159 inch bearings deep groove ball bearings 296–297, 320 tapered roller bearings 816, 818–819, 821, 842–863 inch lock nuts 1264, 1270, 1312–1314 inch shafts and adapter sleeves 1284–1289 and bearings for extreme temperatures 1183 and Y-bearings 460–462, 466–467, 469, 471 inch sleeves 1256–1258, 1290–1295 induction heaters for dismounting bearings 286 for INSOCOAT bearings 1196 for motor encoder units 1159 for mounting bearings 276 induction-hardening steels 151 inductive sensors 1154 inertia 1206 initial clearance 149 injection moulded cages 153 inlet shear heating reduction factor 100–101 inner ring expansion 283 inner ring raceways 25 inner ring shoulder surface 24 inner ring side faces 25 inner rings 24 for needle roller bearings 691–692, 790–793 insert bearings † Y-bearings INSOCOAT bearings 1191–1203 abutment dimensions 1196 assortment 1193 cages 1194 cylindrical roller bearings 1193, 1200–1203 deep groove ball bearings 1193, 1198–1199 designation system 1197 designs and variants 1192–1194 dimension standards 1195 electrical properties 1195 internal clearance 1195 loads 1196 misalignment 1195 mounting 1196 permissible speed 1196 product tables 1198–1203 sealing solutions 1194 temperature limits 1196 tolerances 1195 inspection 291 insulation with hybrid bearings 1206, 1212 with INSOCOAT bearings 1192 with polymer ball bearings 1234 integral bearing seals 58–59, 229–230 integral bearing shields 58, 229 in deep groove ball bearings 300–301, 308 interference fits in the ISO tolerance system 170 resulting clearance reduction 213–214 when mounting bearings 280–283 intermediate washers in cylindrical roller thrust bearings 1038–1039 in needle roller thrust bearings 1058–1059 internal clearance 149–150 considerations when selecting fits 167 effect on frictional moment 113 selection 212–225 versus preload 212–213 internal gauges 273 internal loads 160 IS 692, 721 ISO contamination classification 74–75, 78 envelope requirement 169 general plans 40–41 reference speed 118 tolerance grades 201 tolerance system 169–170 viscosity grades 71 ISR 721 Designation prefixes and suffixes are shown in bold. 1337 IndexText index J J angular contact ball bearings 480, 504 cylindrical roller bearings 582, 602 spherical roller bearings 902 tapered roller bearings 822 JA cylindrical roller bearings 602 spherical roller bearings 902 JB 582, 602 K K CARB toroidal roller bearings 960, 978 cylindrical roller bearings 573, 602 cylindrical roller thrust bearings 1039, 1042, 1047 polymer ball bearings 1246 spherical roller bearings 882, 902 Y-bearings 457 K30 CARB toroidal roller bearings 960, 978 spherical roller bearings 882, 902 ketones 156 key slots 1264, 1266–1267, 1275 keys † hexagonal keys keyways 1264, 1266–1267 kilns and bearings for extreme temperatures 1176 kinematic replenishment/starvation 100, 102 kinematic viscosity † viscosity L L cylindrical roller bearings 602 lock nuts and locking devices 1275 polymer ball bearings 1246 sleeves 1259, 1275 L4B 575, 603 L5B 603 L5DA 1228, 1230, 1231 L7B 603 L7DA 1228, 1230, 1231 labyrinth seals 228, 232 large bearings 275, 285 effect on relubrication interval 254 LHT23 304–305, 321 life calculation examples 90–92 definition 63 equations 64–83 testing 95 unit conversion table 70 with variable operating conditions 81 life adjustment factor 65 life modification factor 64–70, 73 lifting tackle 274, 903 limiting speed 126 compared to reference speed 118 linear bearings 45 load ratings 63–64 load ratio for angular contact ball bearings 498 for four-point contact ball bearings 499 loads conditions 165–166 considerations when selecting bearings 48–51 effect on relubrication interval 254 ranges for grease lubricated bearings 243 locating bearings axial displacement 55 axial location 204 in bearing arrangements 160–161 locating notches † locating slots locating slots in angular contact ball bearings 484 in cylindrical roller bearings 573 in deep groove ball bearings 320 locating/non-locating bearing arrangements 160–162 location axial 204–209 radial 165–204 lock nut tightening angle 281 values for CARB toroidal roller bearings 977 values for self-aligning ball bearings 549 values for spherical roller bearings 901 values for Y-bearings 453 lock nuts designation system 1274–1275 designs and variants 1264–1268 dimension standards 1270–1271 for CARB toroidal roller bearings 1259 for sealed bearings 1259 installation and removal 1272–1273 loosening torque 1270–1271 mating shaft threads 1270–1271 precision lock nuts 1267–1268, 1272–1273, 1322–1326 product tables 1302–1326 tolerances 1270–1271 with a locking screw 1266, 1320–1321 with an integral locking device 1266, 1319 with inch dimensions 1264, 1270, 1312–1314 lock washers design 1264–1265 installation and removal 1272 product tables 1304–1305, 1316–1317 locking clips design 1264–1265 installation and removal 1272 product table 1310–1311 locking plates design 1264–1265 installation and removal 1272 product table 1318 logarithmic profile in cylindrical roller bearings 568–569 in tapered roller bearings 798, 800 loose fits 170 low-friction bearings † SKF Energy Efficient (E2) bearings low-friction seals 300, 302 LS 602 LT 304–305, 321 LT10 304–305, 321 lubricant films effect of inlet shearing 101 effect of kinematic starvation 102 effect on frictional moment 99 formation 241, 265 lubricants effect on polyamide 66 cages 153–154 function 240 greases 244–251 oils 265–266 Solid Oil 1186–1187 lubricated for life bearings for extreme temperatures 1176 capped bearings 58 lubrication 239–269 effect on frictional moment 99–102, 103 grease 242–261 oil 262–269 lubrication holes 883, 886, 887 Designation prefixes and suffixes are shown in bold. 1338M M angular contact ball bearings 481, 504 CARB toroidal roller bearings 961, 963, 978 cylindrical roller bearings 582, 602 cylindrical roller thrust bearings 1040, 1047 deep groove ball bearings 299, 318, 320 INSOCOAT bearings 1194 polymer ball bearings 1246 self-aligning ball bearings 541, 550 spherical roller thrust bearings 1089 thrust ball bearings 1011, 1015 M /M 721 MA angular contact ball bearings 481, 504 cylindrical roller bearings 582, 602 deep groove ball bearings 299, 318, 320 four-point contact ball bearings 499, 504 spherical roller bearings 902 MA(S) 320 machine tools fits and tolerance classes 172–173 load conditions 87 preload considerations 214, 225 specification life 83 stiffness 54 machined metal cages material properties 153 types 38 magnet motors 1165 magnetic fields 152 magnetic sensors motor encoder units 1152–1153 steering encoder units 1164 maintenance-free deep groove ball bearings 300 hybrid bearings 1209 self-aligning ball bearings 540 mandrels 1122 manganese phosphate coating on bearings for extreme temperatures 1171–1172 marginal lubrication 1229 marine applications 1229 matched bearings angular contact ball bearings 477, 505 cylindrical roller bearings 581 deep groove ball bearings 309, 321 tapered roller bearings 802–803, 814–815, 823, 866–877 materials for cages 152–155 for coatings 157 for polymer ball bearings 1236–1237, 1246 for raceways on shafts and in housings 210 for rings and rolling elements 151–152 for seals 155–157 MB CARB toroidal roller bearings 961, 963, 964, 978 cylindrical roller bearings 582, 602 deep groove ball bearings 299, 318, 320 MB(S) 320 MB1 978 mean loads 85–86 mechanical seals 234–235 medical applications and polymer ball bearings 1234 specification life 83 medium-size bearings 275, 285 membranes 226 metal fatigue causes 62 effect of contamination 74–75 effect on bearing life 63 metal-to-metal contact in NoWear coated bearings 1231 prevention 248 metric bearings 40–41 MH 582, 602 micrometers 273 microscope counting method 74–78 mills and cylindrical roller bearings 569 fits and tolerance classes 172–173 specification life 83 mineral oils 265 in grease 247 resistance of polymer ball bearings 1237 minimum load 86 mining applications 83 misalignment considerations when selecting bearings 52 effect on frictional moment 113 miscibility 248–249 mixed lubrication 99, 103 ML cylindrical roller bearings 582, 602 INSOCOAT bearings 1194 modulus of elasticity 152 moisture protection with deep groove ball bearings 296 protection with INSOCOAT bearings 1192 resistance of polymer ball bearings 1234 molybdenum disulfide (MoS2) as a solid lubricant additive 248, 254 moment loads 51 motor encoder units 1152–1161 axial location 1158 bearings 1152 cable connection 1152, 1154, 1157, 1160 cages 1156, 1161 design provisions 1157–1158 designation system 1161 designs and variants 1152–1154 dimension standards 1156 dimensional stability 1156 electromagnetic compatibility 1155 filtering 1155 for extreme operating conditions 1154 internal clearance 1156 lubrication 1154, 1156 mounting 1158, 1159–1160 output signal features 1154–1155 permissible speed 1157 power supply 1155 receiving interface requirements 1154–1155 resistors 1155, 1157 sealing solutions 1152, 1153, 1156 temperature limits 1156–1157 tolerances 1156 voltage supply 1155, 1157 mounting 271–284 bearings with a cylindrical bore 275–277 bearings with a tapered bore 278–284 cold 275 considerations when selecting bearings 56–57 considerations when selecting fits 168 design provisions 210–211 measuring the axial drive-up 282 measuring the clearance reduction 280–281 measuring the inner ring expansion 283 measuring the lock nut tightening angle 281 using heat 276 using the oil injection method 279 mounting dollys for dismounting bearings 288 for mounting bearings 275–276, 718 MP 602 MR 602 MT33 angular contact ball bearings 483, 505 deep groove ball bearings 304–305, 321 Designation prefixes and suffixes are shown in bold. 1339 IndexText index MT47 304–305, 321 N N angular contact ball bearings 504 cylindrical roller bearings 573, 602 deep groove ball bearings 308, 320 polymer ball bearings 1246 N/M 721 N1 angular contact ball bearings 484, 504 cylindrical roller bearings 573, 602 deep groove ball bearings 320 spherical roller thrust bearings 1089 N2 angular contact ball bearings 484, 504 cylindrical roller bearings 573, 602 spherical roller thrust bearings 1089 NBR † acrylonitrile-butadiene rubber (NBR) needle roller and cage assemblies 674–676, 722–728 abutment dimensions 715 cages 693–695, 714 designs and variants 674–676 dimension standards 700 double row bearings 675 fits and tolerance classes 709 in cam followers 1105 in support rollers 1101–1102 internal clearance 700 loads 711 misalignment 700–701 product tables 722–728 tolerances 700 needle roller and cage thrust assemblies designs 1058–1059 fits and tolerance classes 1068 product table 1070–1073 tolerances 1064 needle roller bearings 673–794 applications 676 axial displacement 55 axial location 204 cages 693–695, 714 combined with a cylindrical roller thrust bearing 689–690, 788–789 combined with a full complement bearing 685–687, 784–785 combined with a needle roller thrust bearing 679, 682, 1060 combined with a thrust ball bearing 685–688, 784–787 combined with an angular contact ball bearing 684–685, 780–783 design provisions 714–718 designation system 720–721 designs and variants 30–32, 674–699 dimension standards 700–706 dimensional stability 714 dismounting 286 fits and tolerance classes 716–717 full complement bearings 677-679 gauges 707–709, 718 inner rings 691–692, 790–793 internal clearance 700–706, 710 loads 48, 711–713 lubrication 696–699, 714 misalignment 700–705 mounting 276, 718 needle rollers 692, 794 NoWear coated bearings 1230 permissible speed 714 product tables 722–794 sealing solutions 696–698, 714 seating rings 683, 714 space considerations 47 temperature limits 714 tolerances 700–709 with machined rings 680–682, 744–775 with Solid Oil 1186 needle roller thrust bearings 1057–1075 abutment dimensions 1068 cages 1062, 1067 combined with a needle roller bearing 679, 682, 1060 designation system 1069 designs and variants 34, 1058–1062 dimension standards 1063 dimensional stability 1067 double direction bearings 1058–1059 fits and tolerance classes 1068 loads 49, 1066 misalignment 1063 permissible speed 1067 product tables 1070–1075 raceways on shafts and in housings 1068 temperature limits 1067 tolerances 1063–1065 washers 1060–1061, 1064, 1067, 1068 with a centring flange 1059, 1064, 1068, 1074–1075 needle rollers 692 dimension standards 706 gauges 707 product table 794 tolerances 706, 708 negative operating clearance † preload NLGI 246 noise effect of preload 217, 224 generation at high speeds 128 reduction by spring loading 1213 non-contact seals 228, 231–233 non-locating bearings axial displacement 55, 168 axial location 204 in bearing arrangements 160–161 non-separable bearings dismounting 285 mounting 275 Normal clearance 150 values for angular contact ball bearings 489–490 values for CARB toroidal roller bearings 966–967 values for deep groove ball bearings 314–315 values for spherical roller bearings 892–893 Normal tolerances 133 NoWear 1228 NoWear coated bearings 1227–1231 applications 1229 assortment 1230 coatings 1228, 1231 designation system 1231 designs and variants 1231 loads 86, 1231 lubrication 1231 operating conditions 1228 permissible speed 1231 temperature limits 1231 NR angular contact ball bearings 504 cylindrical roller bearings 602 deep groove ball bearings 308, 320 NSF H1 approved lubricants in bearings with Solid Oil 1187 O ocean-going vessels 83 off-highway vehicles 1163, 1165 office products 1234 offset mounting 971 offshore applications 1229 ohmic resistance 1195 Designation prefixes and suffixes are shown in bold. 1340oil bath 262 calculating the frictional moment 100, 102, 110–111 drag losses 110–111 load conditions 254 oil change interval 267 oil contamination codes 76 oil distribution grooves dimensions 211 in adapter sleeves 1256–1258 in withdrawal sleeves 1262 oil injection method (dismounting) 287 oil injection method (mounting) 279 oil injection method 279 dimensions for ducts, grooves and holes 211 for dismounting bearings 285, 287–290 for mounting bearings 279 with adapter sleeves 1256–1258 with withdrawal sleeves 1262 oil jet 264 drag losses 112 oil change interval 267 oil lubrication 262–269 contamination levels 74–79 drag losses 110–112 effect on reference speed 120 filter rating 75 methods 262–264 oil change intervals 267 oils 265–266 oil mist 264 oil pick-up rings 263 oil supply ducts dimensions 211 in adapter sleeves 1256–1258 in withdrawal sleeves 1262 oil injection method (dismounting) 285, 287–290 oil injection method (mounting) 279 oil-air 254, 264, 267 oils 265–266 oil-spot † oil-air open bearings heating 276 shelf life 291 open flames 156 operating clearance 149–150, 212 operating preload 212 operating temperature effect of grease volume 242 effect on bearing life 82 effect on relubrication interval 252–253 effect on viscosity 71 Orpheus 93 oscillating movements and bearings with Solid Oil 1186 and hybrid bearings 1206 and NoWear coated bearings 1231 load conditions 165 sealing solutions 226 speed considerations 127 using the static load rating 64, 70, 87 osculation 296, 298 outer ring raceways 25 outer ring rotation effect on relubrication interval 248 fits and tolerance classes 174 load conditions 166 with roller encoder units 1162 outer ring shoulder surface 24 outer ring side faces 24 outer rings 24 out-of-round 168 outside diameter 40 tolerance definitions 134 ozone 156 P P angular contact ball bearings 480, 504 cylindrical roller bearings 582, 602 INSOCOAT bearings 1194 lock nuts and locking devices 1275 polymer ball bearings 1246 P5 angular contact ball bearings 505 cylindrical roller thrust bearings 1047 deep groove ball bearings 321 needle roller bearings 721 spherical roller bearings 903 tapered roller bearings 823 thrust ball bearings 1015 P52 321 P6 angular contact ball bearings 505 deep groove ball bearings 321 needle roller bearings 721 spherical roller bearings 903 thrust ball bearings 1015 P62 angular contact ball bearings 505 deep groove ball bearings 321 needle roller bearings 721 spherical roller bearings 903 P63 angular contact ball bearings 505 deep groove ball bearings 321 needle roller bearings 721 P64 505 P6CNR 721 PA 582, 602 PA46 † polyamide 46 (PA46) PA66 † polyamide 66 (PA66) paired mounting with angular contact ball bearings 477–478, 494, 497 with cylindrical roller bearings 581 with deep groove ball bearings 309, 318 with tapered roller bearings 802–803, 814–815, 866–877 paper machines and CARB toroidal roller bearings 958, 960, 971 and NoWear coated bearings 1229 particle counting 74–76, 78 PEEK † polyetheretherketone (PEEK) performance classes SKF Energy Efficient (E2) bearings 54 SKF Explorer bearings 63 permissible speed of angular contact ball bearings 497 of CARB toroidal roller bearings 973 of cylindrical roller bearings 600 of cylindrical roller thrust bearings 1045 of deep groove ball bearings 318 of hybrid bearings 1214 of INSOCOAT bearings 1196 of needle roller bearings 714 of needle roller thrust bearings 1067 of NoWear coated bearings 1231 of polymer ball bearings 1244 of self-aligning ball bearings 545 of sensor bearing units 1157 of spherical roller bearings 896 of spherical roller thrust bearings 1084 of tapered roller bearings 816 of thrust ball bearings 1014 of Y-bearings 446 PEX cylindrical roller bearings 583, 603 tapered roller bearings 804, 823 PH angular contact ball bearings 480, 504 cylindrical roller bearings 582, 602 Designation prefixes and suffixes are shown in bold. 1341 IndexText index PHA 582, 602 pharmaceutical industry and bearings with Solid Oil 1186 and polymer ball bearings 1234 PHAS 481, 504 phenolic resin 155 phosphate coating on bearings for extreme temperatures 1171–1172 on sleeves 1256, 1262 photographic industry 1234 pick-up rings † oil pick-up rings pinions and tapered roller bearings 800 preload considerations 219–223 pins 1120 pitch circle diameter 25 plug-and-play roller encoder units 1162 sensor units for off-highway vehicles 1165 steering encoder units 1163–1164 plugs 1108–1109, 1122 polyalkylene 1171 polyamide 46 (PA46) 155 polyamide 66 (PA66) in polymer ball bearings 1236–1237, 1246 material properties 153–154 polyetheretherketone (PEEK) in polymer ball bearings 1237, 1246 material properties 155 polyethylene (PE) 1237, 1246 polyethylene terephthalate (PET) 1237, 1246 polyimide (PI) 1237, 1246 polymer ball bearings 1233–1253 applications 1234 assortment 1234 cages 1235, 1236 compared to steel bearings 1234, 1238 designation system
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