SKF - Rolling Bearings

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7.4 Matched bearings arranged face-to-face d 140 – 320 mm T r 4 r3 D 2B r 5 d Principal dimensions Basic load ratings Fatigue Speed ratings Mass Designation dynamic static load limit Reference Limiting speed speed d D T C C 0 P u mm kN kN r/min kg – 140 210 90 561 1 160 116 1 700 2 800 11 32028 X/DF 250 91,5 721 1 140 116 1 500 2 600 18 30228 J2/DFC100 250 143,5 1 100 2 000 200 1 500 2 600 29,5 32228 J2/DF 300 154 1 190 1 800 176 1 200 2 200 52,5 31328 XJ2/DF 150 225 96 644 1 320 132 1 600 2 600 13,5 32030 X/DF 270 98 737 1 120 114 1 400 2 400 22,5 30230/DFC350 270 154 1 250 2 280 224 1 400 2 400 37 32230 J2/DF 320 164 1 340 2 040 200 1 100 2 000 58,5 31330 XJ2/DF 160 240 102 737 1 560 156 1 500 2 400 16 32032 X/DF 290 104 913 1 460 143 1 300 2 200 27,5 30232 J2/DF 290 168 1 510 2 800 265 1 300 2 200 48 32232 J2/DF 170 230 76 484 1 160 110 1 500 2 800 9,2 32934/DFC225 260 114 880 1 830 180 1 400 2 200 22 32034 X/DF 310 182 1 720 3 250 300 1 200 2 000 59 32234 J2/DF 180 250 90 605 1 460 137 1 400 2 600 14 32936/DF 280 128 1 100 2 320 220 1 300 2 000 29,5 32036 X/DF 320 182 1 720 3 250 300 1 100 1 900 61 32236 J2/DF 190 260 90 616 1 530 143 1 300 2 400 14,5 32938/DF 290 128 1 120 2 400 224 1 200 2 000 30,5 32038 X/DF 340 120 1 230 2 000 190 1 100 1 800 50 30238 J2/DFC700 200 310 140 1 280 2 750 255 1 100 1 900 39 32040 X/DF 360 128 1 340 2 240 212 1 000 1 700 52 30240 J2/DFC570 360 208 2 090 4 000 360 1 000 1 700 88 32240 J2/DF 220 300 102 842 2 000 183 1 100 2 000 21 32944/DFC300 340 152 1 540 3 350 300 1 000 1 700 51 32044 X/DF 240 360 152 1 570 3 550 315 950 1 600 54,5 32048 X/DF 260 400 174 1 980 4 400 380 850 1 400 79,5 32052 X/DF 280 420 174 2 050 4 750 400 800 1 300 84,5 32056 X/DF 300 420 152 1 790 4 500 375 800 1 400 65,5 32960/DF 320 480 200 2 640 6 200 510 850 1 300 125 32064 X/DF 870
a r c D a d a C a 871 Dimensions Abutment and fillet dimensions Calculation factors d 2B r 3,4 r 5 d a D a D a C a r a r c e Y 1 Y 2 Y 0 min. min. max. min. max. min. max. max. 7.4 mm mm – 140 90 2 0,6 153 187 200 7 2 0,6 0,46 1,5 2,2 1,4 84 3 1 164 219 236 7 2,5 1 0,43 1,6 2,3 1,6 136 3 1 159 210 236 8 2,5 1 0,43 1,6 2,3 1,6 140 4 1,5 169 235 283 9 3 1,5 0,83 0,81 1,2 0,8 150 96 2,5 1 164 200 213 8 2 1 0,46 1,5 2,2 1,4 90 3 1 175 234 256 9 2,5 1 0,43 1,6 2,3 1,6 146 3 1 171 226 256 8 2,5 1 0,43 1,6 2,3 1,6 150 4 1,5 181 251 303 9 3 1,5 0,83 0,81 1,2 0,8 160 102 2,5 1 175 213 228 8 2 1 0,46 1,5 2,2 1,4 96 3 1 189 252 275 8 2,5 1 0,43 1,6 2,3 1,6 160 3 1 183 242 275 10 2,5 1 0,43 1,6 2,3 1,6 170 76 2 0,6 183 213 220 7 2 0,6 0,37 1,8 2,7 1,8 114 2,5 1 188 230 246 10 2 1 0,44 1,5 2,3 1,4 172 4 1,5 196 259 293 10 3 1,5 0,43 1,6 2,3 1,6 180 90 2 0,6 194 225 240 8 2 0,6 0,48 1,4 2,1 1,4 128 2,5 1 199 247 266 10 2 1 0,43 1,6 2,3 1,6 172 4 1,5 204 267 303 9 3 1,5 0,44 1,5 2,3 1,6 190 90 2 0,6 204 235 248 8 2 0,6 0,48 1,4 2,1 1,4 128 2,5 1 210 257 276 10 2 1 0,44 1,5 2,3 1,6 110 4 1,5 224 298 323 9 3 1,5 0,43 1,6 2,3 1,6 200 140 2,5 1 222 273 296 11 2 1 0,43 1,6 2,3 1,6 116 4 1,5 237 315 343 9 3 1,5 0,43 1,6 2,3 1,6 196 4 1 231 302 343 11 3 1 0,4 1,7 2,5 1,6 220 102 2,5 1 234 275 286 9 2 1 0,43 1,6 2,3 1,6 152 3 1 244 300 325 12 2,5 1 0,43 1,6 2,3 1,6 240 152 3 1 262 318 346 12 2,5 1 0,46 1,5 2,2 1,4 260 174 4 1,5 287 352 382 13 3 1,5 0,43 1,6 2,3 1,6 280 174 4 1,5 305 370 402 14 3 1,5 0,46 1,5 2,2 1,4 300 152 3 1 324 383 406 12 2,5 1 0,4 1,7 2,5 1,6 320 200 4 1,5 350 424 462 15 3 1,5 0,46 1,5 2,2 1,4
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Rolling bearings
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Rolling bearings
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E Bearing specifics ...............
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7.5 Matched bearings arranged back-
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7
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Foreword This catalogue contains th
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without flange rings er bearings be
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Units of measurement This catalogue
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Meeting the toughest challenges Our
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Bearings SKF is the world leader in
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Bearing basics ....................
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Bearing basics Selecting rolling be
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Bearing basics Bearing systems (†
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Bearing basics Bearing types and de
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Bearing basics Angular contact ball
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Bearing basics Cylindrical roller b
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Bearing basics Needle roller bearin
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Bearing basics Angular contact thru
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Bearing basics Support rollers (con
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Bearing basics Fig. 7 a b c c d Mac
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Bearing basics Boundary dimensions
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Bearing basics Basic bearing design
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Bearing basics Diagram 3 Designatio
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Bearing basics Basic selection crit
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Bearing basics Loads Fig. 19 Magnit
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Bearing basics Combined loads A com
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Bearing basics Misalignment Angular
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Bearing basics Friction Rolling bea
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Bearing basics Mounting and dismoun
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Bearing basics Sealing solutions To
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Selecting bearing size B A systems
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Bearing life and load ratings Beari
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Selecting bearing size using the li
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2 Selecting bearing size using the
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Dynamic bearing loads Equivalent dy
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Selecting bearing size using static
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Selecting bearing size using static
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Calculation examples • A more cos
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SKF calculation tools SKF Bearing B
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SKF life testing SKF life testing S
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Friction The friction in a rolling
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Friction The SKF model for calculat
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Friction Kinematic replenishment/st
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Friction Table 2a Geometric and loa
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Friction Table 3a Geometric constan
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Friction Table 3e Geometric constan
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Friction Drag losses Bearings lubri
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Friction Drag losses for vertical s
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Friction Starting torque The starti
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Speeds Basics of bearing speed ....
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Reference speed Diagram 1 Heat flow
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Reference speed Diagram 2 Adjustmen
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Reference speed Diagram 4 Adjustmen
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Reference speed Example 1 An SKF Ex
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Special cases Special cases In cert
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Vibration generation at high speeds
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Bearing specifics Dimensions For in
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Bearing specifics Table 1 Tolerance
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Bearing specifics Table 2 Diameter
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Bearing specifics Table 4 P6 class
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Bearing specifics Table 6 Normal an
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Bearing specifics Table 8 P5 class
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Bearing specifics Table 10 Toleranc
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Bearing specifics Table 12 Normal t
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Bearing specifics Table 15 Chamfer
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Bearing specifics The initial inter
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Bearing specifics Ceramics The comm
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Bearing specifics Therefore, whethe
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Bearing specifics Hydrogenated acry
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Design considerations Bearing syste
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Bearing systems locating bearing po
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Bearing systems Adjusted bearing sy
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Radial location of bearings Radial
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Radial location of bearings 3. Bear
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Radial location of bearings Bearing
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Radial location of bearings Shaft a
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Radial location of bearings Table 2
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Radial location of bearings Relatio
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Radial location of bearings The per
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Axial location of bearings Locating
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Axial location of bearings Bearings
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Axial location of bearings CARB tor
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Designing associated components Fig
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Selecting internal clearance or pre
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Sealing solutions Fig. 43 Fig. 44 S
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Sealing solutions Integral bearing
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Sealing solutions External seals Fo
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Sealing solutions Fig. 57 Fig. 58 F
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Sealing solutions V-ring seals V-ri
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Sealing solutions F 237
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Lubrication Basics of lubrication R
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Lubrication Grease lubrication The
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Lubrication Lubricating greases Lub
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Lubrication Temperature zones Tempe
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Lubrication Protection against corr
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Lubrication SKF greases - technical
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Lubrication Relubrication Rolling b
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Lubrication Very slow speeds Select
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Lubrication Diagram 4 Relubrication
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Lubrication Relubrication procedure
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Lubrication To effectively replace
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Lubrication Oil lubrication Fig. 6
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Lubrication Oil jet For very high-s
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Lubrication Selecting lubricating o
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20 000 Lubrication Diagram 5 Estima
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Mounting, dismounting and bearing c
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General Fig. 1 a b 1 2 a b 1 2 3 4
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Mounting Mounting Depending on the
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Mounting Bearing adjustment The int
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Mounting Fig. 14 the bearing († f
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Mounting Fig. 18 a c b b a c a Fig.
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TMEM 1500 Mounting Fig. 22 0.450 ON
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Dismounting Fig. 23 Dismounting If
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Dismounting Dismounting bearings fi
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Dismounting Fig. 32 Fig. 33 H 289
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Inspection and cleaning Bearing sto
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Deep groove ball bearings 1 Y-beari
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1 Deep groove ball bearings Designs
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1 Deep groove ball bearings Double
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1 Deep groove ball bearings Sealing
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1 Deep groove ball bearings Low-fri
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1 Deep groove ball bearings ICOS oi
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1 Deep groove ball bearings Grease
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1 Deep groove ball bearings Bearing
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1 Deep groove ball bearings Perform
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1 Deep groove ball bearings Bearing
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1 Deep groove ball bearings Table 6
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1 Deep groove ball bearings Loads S
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1 Deep groove ball bearings Tempera
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1 Deep groove ball bearings Designa
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1.1 Single row deep groove ball bea
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1.2 Capped single row deep groove b
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1.3 ICOS oil sealed bearing units d
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1.6 Stainless steel deep groove bal
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1.7 Capped stainless steel deep gro
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1.10 Double row deep groove ball be
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1.10 Double row deep groove ball be
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2 Y-bearings (insert bearings) Desi
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Design and variants Fig. 4 2 Fig. 2
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hole in the outer ring groove. This
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Y-bearings with a tapered bore Y-be
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Sealing solutions SKF supplies all
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Shields On request, Y-bearings can
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Design and variants Diagram 1 2 Gre
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Y-bearings for agricultural applica
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Design and variants 2 Table 4 Rubbe
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Performance classes 2 439
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Bearing data 2 with SKF ConCentra l
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Bearing data Fig. 27 2 5° 443
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Calculation factors Bearing series
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• outer ring temperature ≤ 60
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Threaded holes in the inner ring of
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Mounting and dismounting When mount
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Hook spanners for Y-bearings on an
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Mounting and dismounting Eccentric
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Designation system 2 Group 2 Group
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Dimensions Basic load ratings dynam
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Principal dimensions Basic load Fat
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463 2.2
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Dimensions Basic load Fatigue Limit
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Dimensions Basic load Fatigue Limit
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2.6 SKF ConCentra Y-bearings, inch
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2.8 Y-bearings with a tapered bore
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473 2.9
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3 Angular contact ball bearings Des
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3 Angular contact ball bearings Pai
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3 Angular contact ball bearings Fou
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3 Angular contact ball bearings Sea
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3 Angular contact ball bearings Loc
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3 Angular contact ball bearings Bea
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3 Angular contact ball bearings Tab
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3 Angular contact ball bearings Loa
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3 Angular contact ball bearings Min
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3 Angular contact ball bearings Mat
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3 Angular contact ball bearings Mat
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3.1 Single row angular contact ball
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3.2 Double row angular contact ball
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3.2 Double row angular contact ball
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3.3 Capped double row angular conta
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3.3 Capped double row angular conta
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3.4 Four-point contact ball bearing
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4 Self aligning ball bearings Desig
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Designs and variants Basic design b
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Designs and variants Table 2 Cages
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Bearing data Bore tolerance of self
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Permissible speed Temperature limit
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Design of bearing arrangements Bear
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Design of bearing arrangements Tabl
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Designation system 4 551
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a r a D a d a 4.1 Dimensions Abutme
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a D a 4.3 Dimensions Abutment and f
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Principal dimensions Abutment dimen
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5 Cylindrical roller bearings Desig
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5 Cylindrical roller bearings Singl
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5 Cylindrical roller bearings Other
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5 Cylindrical roller bearings Other
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5 Cylindrical roller bearings Beari
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5 Cylindrical roller bearings Singl
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5 Cylindrical roller bearings NNF d
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5 Cylindrical roller bearings Cages
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5 Cylindrical roller bearings Table
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5 Cylindrical roller bearings Loads
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5 Cylindrical roller bearings Dynam
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5 Cylindrical roller bearings Permi
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5 Cylindrical roller bearings Desig
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5.1 Single row cylindrical roller b
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5.2 High-capacity cylindrical rolle
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5.2 High-capacity cylindrical rolle
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5.3 Single row full complement cyli
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5.4 Double row full complement cyli
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5.5 Sealed double row full compleme
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5.5 Sealed double row full compleme
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6 Needle roller bearings Designs an
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Designs and variants Basic design b
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Designs and variants Drawn cup need
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Designs and variants Greases for fu
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Designs and variants Needle roller
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Designs and variants Alignment need
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Designs and variants NKIA series Ne
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Designs and variants NX series Need
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Designs and variants Cages Dependin
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Designs and variants Table 3 Cages
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Designs and variants solid contamin
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Designs and variants Relubrication
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Bearing data Drawn cup needle rolle
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Bearing data Alignment needle rolle
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Bearing data Thrust ball bearing Bo
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Bearing data Table 5 Needle roller
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Bearing data Table 10 Raceway toler
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Loads Loads Needle rollers and cage
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Loads Symbols Cylindrical roller th
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Design of bearing arrangements Abut
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Design of bearing arrangements Comb
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Design of bearing arrangements 6 71
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Designation system Group 4 4.1 4.2
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Principal dimensions Basic load rat
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729 6.1
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6.2 Dimensions Appropriate inner ri
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BK .. RS HN 6.2 Dimensions Appropri
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BK .. RS HN HK BK (double row) (dou
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HN HK BK (double row) (double row)
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HN 6.2 Dimensions Appropriate inner
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D a r a 747 6.3 Dimensions Abutment
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D a r a r a d a 6.4 Dimensions Abut
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d a 6.4 Dimensions Abutment and fil
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a r a D a d a D b 6.5 Dimensions Ab
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a D a r a 773 d a D b 6.5 Dimension
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a r a D a d a D b d b 6.6 Dimension
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D a r a r b d a 6.8 Dimensions Abut
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d a r a r a D a 6.9 Dimensions Abut
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D a 6.9 Dimensions Abutment and fil
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C a d a r a r a D a B i d i F r a 6
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a 6.11 Dimensions Abutment and fill
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a 6.12 Dimensions Abutment and fill
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Dimensions Mass Designation Dimensi
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Dimensions Mass Designation d F B r
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795 6.14
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7 Tapered roller bearings Designs a
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7 Tapered roller bearings Assortmen
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7 Tapered roller bearings Matched b
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7 Tapered roller bearings Performan
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7 Tapered roller bearings Bearing d
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7 Tapered roller bearings Bearing d
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7 Tapered roller bearings Axial int
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7 Tapered roller bearings Calculati
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7 Tapered roller bearings Calculati
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7 Tapered roller bearings Temperatu
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7 Tapered roller bearings Table 6 S
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Page 844 and 845: 7.2 Inch single row tapered roller
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Page 874 and 875: 7.5 Matched bearings arranged back-
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Page 878 and 879: 7.6 Matched bearings arranged in ta
Page 881 and 882: 8 Spherical roller bearings Designs
Page 883 and 884: Designs and variants Fig. 4 Fig. 5
Page 885 and 886: Designs and variants • E design b
Page 887 and 888: Designs and variants Greases for se
Page 889 and 890: Designs and variants Bearings for v
Page 891 and 892: Performance classes Performance cla
Page 893 and 894: Bearing data Width tolerances for S
Page 895 and 896: Bearing data Table 5 Radial interna
Page 897 and 898: Loads Table 6 Symbols B = bearing w
Page 899 and 900: Design of bearing arrangements Desi
Page 901 and 902: Design of bearing arrangements Fig.
Page 903 and 904: Design of bearing arrangements Tabl
Page 905 and 906: Designation system Group 4 4.1 4.2
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a r a D a d a Dimensions Abutment a
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a r a 931 D a d a Dimensions Abutme
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Principal dimensions Abutment and f
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Principal dimensions Mass Designati
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953 8.5
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9 CARB toroidal roller bearings Des
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9 CARB toroidal roller bearings Ass
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9 CARB toroidal roller bearings Sea
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9 CARB toroidal roller bearings Bea
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9 CARB toroidal roller bearings Tab
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9 CARB toroidal roller bearings Axi
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9 CARB toroidal roller bearings Cal
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9 CARB toroidal roller bearings Loa
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9 CARB toroidal roller bearings App
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9.1 CARB toroidal roller bearings d
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9.2 Sealed CARB toroidal roller bea
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9.2 Sealed CARB toroidal roller bea
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9.3 CARB toroidal roller bearings o
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10 Thrust ball bearings Designs and
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Designs and variants Bearings with
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Loads Loads Minimum load For additi
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Designation system Designation syst
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d a r a r a D a Dimensions Abutment
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R d a r a r a D a Dimensions Abutme
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R d a r a r a D a Dimensions Abutme
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D a d a r a r b Dimensions Abutment
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D a d a r a r b Dimensions Abutment
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D a d a r a r b R Dimensions Abutme
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11 Cylindrical roller thrust bearin
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11.1 Cylindrical roller thrust bear
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12 Needle roller thrust bearings De
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Designs and variants Intermediate w
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Designs and variants LS series univ
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Bearing data Bearing data Dimension
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Bearing data Table 3 ISO tolerance
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Permissible speed Temperature limit
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Designation system Designation syst
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B 1 B B r 1 45° r 1 r 2 D d D d d
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B 1 B B r 1 45° r 1 r 2 r 1 r 2 D
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B 1 B r 1 45° r 1 r 2 D d D d d 1
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13 Spherical roller thrust bearings
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13.1 Spherical roller thrust bearin
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14 Track runner bearings Designs an
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Designs and variants Support roller
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Designs and variants NUTR .. A desi
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Designs and variants KR design cam
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Designs and variants during mountin
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Designs and variants Grease fitting
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Designs and variants Cages Dependin
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Designs and variants Relubrication
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Bearing data Support rollers (R)NA
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Loads Cam followers Symbols ... The
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Speed limits Temperature limits The
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Design of associated components Gui
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Mounting 14 1123
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Designation system Group 1 Group 2
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Outside diameter Basic load ratings
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Outside diameter Basic load ratings
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Designation Basic load ratings Fati
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Designation Basic load ratings Fati
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3 r 4 d 1 NUTR .. A PWTR …2RS Des
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3 r 4 d 1 NUTR .. A PWTR …2RS Des
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d 1 45° r NNTR ...2ZL Designation
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B 2 M 1 KR .. B, size ≥ 30 KRV ..
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d 1 B 3 B 3 d d 1 c d NUKR .. A (NU
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15A Sensor bearing units Motor enco
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Motor encoder units ring that conta
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Motor encoder units Power supply SK
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Motor encoder units Sensor The perm
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50 Motor encoder units Fig. 12 Moun
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Motor encoder units Designation sys
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Other sensor bearing units Other se
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Other sensor bearing units Sensor u
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a r a +1 D 2 d b d a D a Bore diame
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15B Bearings for extreme temperatur
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15B.1 Single row deep groove ball b
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15B.1 Single row deep groove ball b
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15B.2 Y-bearings for extreme temper
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15C Bearings with Solid Oil Feature
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Bearings and bearing units with Sol
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Designation system Speed limits The
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15D SKF DryLube bearings SKF DryLub
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15D SKF DryLube bearings Designs an
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15D SKF DryLube bearings Bearing da
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15D SKF DryLube bearings Table 2 Ra
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15D SKF DryLube bearings Selecting
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15D SKF DryLube bearings Speed limi
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15E INSOCOAT bearings Designs and v
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Designs and variants INSOCOAT beari
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Bearing data Bearing data Deep groo
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Designation system Fig. 2 Designati
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a r a D a d a 15E.1 Dimensions Abut
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a r b 15E.2 D a d a d b Dimensions
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a r b 1217 D a d a d b Dimensions A
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15F Hybrid bearings Designs and var
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15F Hybrid bearings Assortment The
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15F Hybrid bearings Hybrid cylindri
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15F Hybrid bearings Bearing data De
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15F Hybrid bearings Temperature lim
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15F.1 Hybrid deep groove ball beari
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15F.2 Sealed hybrid deep groove bal
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15F.2 Sealed hybrid deep groove bal
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15F.3 XL hybrid deep groove ball be
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15F.4 Hybrid cylindrical roller bea
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15G NoWear coated bearings NoWear c
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NoWear coating NoWear coated bearin
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Designation system Designs and vari
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15H Polymer ball bearings SKF polym
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15H Polymer ball bearings Materials
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15H Polymer ball bearings Bearing d
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15H Polymer ball bearings Loads The
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15H Polymer ball bearings Diagram 1
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15H Polymer ball bearings Permissib
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15H Polymer ball bearings Designati
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15H.1 Polymer single row deep groov
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15H.1 Polymer single row deep groov
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15H.2 Polymer thrust ball bearings
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16 Bearing accessories Adapter slee
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Adapter sleeves Fig. 2 Sleeve with
Page 1275 and 1276:
Adapter sleeves Fig. 7 E (with a KM
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Withdrawal sleeves Withdrawal sleev
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Withdrawal sleeves Product data Dim
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Lock nuts Fig. 14 Fig. 17 MB / W lo
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Lock nuts Precision lock nuts with
Page 1285 and 1286:
Lock nuts 1283 16
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Lock nuts with an integral locking
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Lock nuts KMD precision lock nuts K
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Designation system Suffix Sleeves B
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Principal dimensions d 1 d d 3 B 1
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Principal dimensions d 1 d d 3 B 1
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Principal dimensions Thread Mass De
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Dimensions Axial load carrying capa
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Designation Dimensions Mass d d 1 d
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Dimensions Mass Designations Lock n
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1323 16.7
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Designations Dimensions Mass Lockin
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Threads 1) Dimensions Mass Designat
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1329 16.9
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Designation Dimensions Mass d d 1 d
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16.12 KMK lock nuts with an integra
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1341 16.16
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Text index A A angular contact ball
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ass cage types 37-38 in polymer bal
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sealing solutions 579-581, 599, 668
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extreme temperature bearings 1169-1
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housings 24 fits and tolerance clas
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M M angular contact ball bearings 4
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O ocean-going vessels 83 off-highwa
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values for CARB toroidal roller bea
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SM 721 small bearings 275, 285 smea
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terminology 25 types 33-35 thrust c
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design 1223 dimensional stability 1
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Designation Product Product table N
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Page 1377:
1375 Index Index
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SKF - Rolling Bearings

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