SKF - Rolling Bearings

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Bearing specifics Dimensions ....................... 132 Chamfer dimensions ................. 132 Tolerances ........................ 132 Tolerance symbols .................. 132 Diameter series identification ......... 132 Tolerance tables .................... 133 Chamfer dimension limits ............ 133 Bearing internal clearance .......... 149 Materials for rolling bearings ........ 150 Materials for bearing rings and rolling elements .......................... 151 Bearing steels for throughhardening ....................... 151 Bearing steels for inductionhardening ....................... 151 Bearing steels for case-hardening ... 151 Stainless steels ................... 151 High-temperature bearing steels .... 151 Ceramics ........................ 152 Cage materials ..................... 152 Stamped metal cages .............. 152 Machined metal cages ............. 153 Polymer cages ................... 153 Cages made of other materials ...... 155 Seal materials ...................... 155 Acrylonitrile-butadiene rubber ..... 155 Hydrogenated acrylonitrilebutadiene rubber ................. 156 Fluoro rubber . ................... 156 Polytetrafluoroethylene ........... 156 Polyurethane .................... 157 Lubricants ......................... 157 Coatings .......................... 157 E 131
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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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Page 81 and 82: Selecting bearing size using the li
Page 87 and 88: Dynamic bearing loads Equivalent dy
Page 89 and 90: Selecting bearing size using static
Page 91 and 92: Selecting bearing size using static
Page 93 and 94: Calculation examples • A more cos
Page 95 and 96: SKF calculation tools SKF Bearing B
Page 97: SKF life testing SKF life testing S
Page 100 and 101: Friction The friction in a rolling
Page 102 and 103: Friction The SKF model for calculat
Page 104 and 105: Friction Kinematic replenishment/st
Page 106 and 107: Friction Table 2a Geometric and loa
Page 108 and 109: Friction Table 3a Geometric constan
Page 110 and 111: Friction Table 3e Geometric constan
Page 112 and 113: Friction Drag losses Bearings lubri
Page 114 and 115: Friction Drag losses for vertical s
Page 116 and 117: Friction Starting torque The starti
Page 119 and 120: Speeds Basics of bearing speed ....
Page 121 and 122: Reference speed Diagram 1 Heat flow
Page 123 and 124: Reference speed Diagram 2 Adjustmen
Page 125 and 126: Reference speed Diagram 4 Adjustmen
Page 127 and 128: Reference speed Example 1 An SKF Ex
Page 129 and 130: Special cases Special cases In cert
Page 131: Vibration generation at high speeds
Page 135 and 136: Tolerances Tolerance tables The act
Page 137 and 138: Tolerances cont. table 1 Tolerance
Page 139 and 140: Tolerances Table 3 Normal tolerance
Page 141 and 142: Tolerances Table 5 P5 class toleran
Page 143 and 144: Tolerances Table 7 CLN class tolera
Page 145 and 146: Tolerances Table 9 Tolerances for i
Page 147 and 148: Tolerances Table 11 Normal, P6 and
Page 149 and 150: Tolerances Table 13 Chamfer dimensi
Page 151 and 152: Bearing internal clearance Bearing
Page 153 and 154: Materials for rolling bearings Mate
Page 155 and 156: Materials for rolling bearings Mach
Page 157 and 158: Materials for rolling bearings Poly
Page 159: Materials for rolling bearings Poly
Page 162 and 163: Design considerations Bearing syste
Page 164 and 165: Design considerations For the beari
Page 166 and 167: Design considerations Floating bear
Page 168 and 169: Design considerations 2. Magnitude
Page 170 and 171: Design considerations 6. Design and
Page 172 and 173: Design considerations Stainless ste
Page 174 and 175: Design considerations Fits for soli
Page 176 and 177: Design considerations Table 3 Fits
Page 178 and 179: Design considerations Fits for holl
Page 180 and 181: Design considerations Table 7a Shaf
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Design considerations Table 7b Shaf
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Design considerations Table 7c Shaf
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Design considerations Table 7d Shaf
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Design considerations Table 7e Shaf
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Design considerations Table 7f Shaf
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Design considerations Table 8a Hous
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Design considerations Table 8b Hous
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Design considerations Table 8c Hous
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Design considerations Table 8d Hous
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Design considerations Table 8e Hous
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Design considerations Dimensional a
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Design considerations Tolerances fo
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Design considerations Surface rough
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Design considerations Instead of in
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Design considerations Abutment and
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Design considerations Design of ass
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Design considerations Selecting int
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Design considerations The reduction
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Design considerations For both tape
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Design considerations Preload in be
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Design considerations Loads and ela
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Design considerations Fig. 38 Fig.
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Design considerations Frictional mo
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Design considerations Sealing solut
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Design considerations Non-contact s
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Design considerations For deep groo
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Design considerations Single or mul
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Design considerations Contact seals
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Design considerations Mechanical se
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Lubrication Basics of lubrication .
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Basics of lubrication Viscosity rat
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Grease lubrication Table 1 Speed ra
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Lubricating greases Diagram 1 The S
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-50 0 50 100 150 200 250 °C Lubric
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SKF greases calcium complex and lit
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SKF greases Table 4 Designation Ver
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Relubrication The relubrication int
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Relubrication Observations If, duri
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Relubrication Table 5 Bearing facto
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Relubrication procedures To apply g
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Relubrication procedures Continuous
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Oil lubrication Oil pick-up ring Fo
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Oil lubrication Lubricating oils St
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Oil lubrication Oil change How freq
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Oil lubrication Diagram 6 Viscosity
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Mounting, dismounting and bearing c
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Product data
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1 Deep groove ball bearings Designs
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Designs and variants 1 both the inn
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Designs and variants 1 Table 1 Cage
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Designs and variants 1 Shields Bear
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Designs and variants 1 Contact seal
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Designs and variants 1 The technica
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Designs and variants 1 If the opera
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1 Designs and variants Quiet runnin
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Performance classes 1 311
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Bearing data 1 Stainless steel deep
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Bearing data 1 Table 7 Radial inter
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Loads 1 Single row deep groove ball
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Permissible speed 1 319
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Designation system 1 Group 4 4.1 4.
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1.1 r a r a D a d a Dimensions Abut
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1.1 r a r a D a d a 325 Dimensions
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1.3 r a r a d a Dimensions Abutment
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1.4 b a max. 0,5 r a D b D a d a C
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1.9 b a max. 0,5 r a d a D a D b C
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2 Y-bearings Designs and variants Y
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2 Y-bearings Y-bearings with grub s
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2 Y-bearings SKF ConCentra Y-bearin
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2 Y-bearings Y-bearings with a stan
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2 Y-bearings 5-lip seals For extrem
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2 Y-bearings Grease life for Y-bear
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2 Y-bearings Relubrication Y-bearin
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2 Y-bearings Rubber seating rings R
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2 Y-bearings Performance classes SK
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2 Y-bearings Bearing data Y-bearing
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2 Y-bearings Table 5 Tolerances for
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2 Y-bearings Loads Symbols Minimum
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2 Y-bearings Temperature limits The
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2 Y-bearings Design for larger axia
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2 Y-bearings Shaft tolerances Recom
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2 Y-bearings Table 13 Grub screws i
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2 Y-bearings Table 15 Grub screws i
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2 Y-bearings Designation system Gro
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2.1 Y-bearings with grub screws, me
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2.2 Y-bearings with grub screws, in
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2.2 Y-bearings with grub screws, in
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2.3 Y-bearings with an eccentric lo
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2.4 Y-bearings with an eccentric lo
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2.5 SKF ConCentra Y-bearings, metri
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2.7 Y-bearings with a tapered bore
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2.9 Y-bearings with a standard inne
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3 Angular contact ball bearings Des
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Designs and variants The standard a
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Designs and variants Basic design b
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Designs and variants Cages Dependin
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Designs and variants Greases for ca
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Performance classes Performance cla
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Bearing data Double row angular con
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Bearing data Table 6 Preload of uni
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Bearing data 3 491
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Loads Four-point contact ball beari
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Loads Calculating the axial load fo
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Permissible speed Temperature limit
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Design of bearing arrangements Four
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Design of bearing arrangements Matr
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Design of bearing arrangements 3 50
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Designation system Group 4 4.1 4.2
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3.1 D a r a r a d a r a D b Dimensi
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D a r a r a d a 3.2 Dimensions Abut
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D a r a r a d a 3.2 Dimensions Abut
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3.3 D a r a r a d a Dimensions Abut
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3.3 D a r a r a d a Dimensions Abut
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a 3.4 r a D a d a d a D a Dimension
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4 Self-aligning ball bearings Desig
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4 Self-aligning ball bearings Beari
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4 Self-aligning ball bearings Beari
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4 Self-aligning ball bearings Loads
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4 Self-aligning ball bearings Mount
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4.1 Self-aligning ball bearings d 5
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4.2 Sealed self-aligning ball beari
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4.3 Self-aligning ball bearings wit
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4.4 Self-aligning ball bearings on
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5 Cylindrical roller bearings Desig
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Designs and variants Fig. 1 In addi
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Designs and variants Angle rings (t
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Designs and variants Bearings with
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Designs and variants High-capacity
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Designs and variants Separable bear
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Designs and variants Double row ful
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Designs and variants Relubrication
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Performance classes Performance cla
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Bearing data Bearing data, continue
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Bearing data Double row full comple
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Bearing data Double row full comple
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Bearing data Table 4 Axial internal
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Bearing data Conversion factors for
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Loads Single row full complement cy
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Loads Symbols B = bearing width [mm
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Temperature limits Temperature limi
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Mounting Mounting Interchangeable c
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a r b B 2 r b r a r 4 r 3 B 1 D a d
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a B 2 r b r 3 r 4 B 1 D a d a d b d
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a B 2 r b r 4 r 3 B 1 D a d a d b d
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a B 2 r b B 1 D a d a d b d d 1 5.1
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a r a r a r a d a D a d a d b D a 5
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a r a r a r a d a D a d a d b D a 5
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a r a r a D a d a r b 645 r a D b D
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a r b r a r a r a D a d a D b D a d
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a r b r a r a r a D a d a D b D a d
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a r b r a D a d a D b 5.3 Dimension
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r a 657 r a r a d a D a 5.4 Dimensi
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r a r a r a d a D a 5.4 Dimensions
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r a 665 r a r a d a D a 5.4 Dimensi
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C a r a d a 5.5 Dimensions Abutment
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C a r a d a 5.5 Dimensions Abutment
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6 Needle roller bearings Designs an
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6 Needle roller bearings Special ne
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6 Needle roller bearings SKF suppli
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6 Needle roller bearings Needle rol
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6 Needle roller bearings SKF suppli
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6 Needle roller bearings NKX series
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6 Needle roller bearings Some sizes
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6 Needle roller bearings Cages for
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6 Needle roller bearings Sealing so
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6 Needle roller bearings Combined n
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6 Needle roller bearings Bearing da
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6 Needle roller bearings Table 7 Ta
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6 Needle roller bearings Table 13 R
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6 Needle roller bearings Loads, con
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6 Needle roller bearings Temperatur
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6 Needle roller bearings Shaft and
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6 Needle roller bearings Mounting D
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6 Needle roller bearings Designatio
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6.1 Needle roller and cage assembli
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6.2 Drawn cup needle roller bearing
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6.3 Needle roller bearings with mac
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6.7 Alignment needle roller bearing
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6.8 Alignment needle roller bearing
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6.9 Needle roller / angular contact
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6.9 Needle roller / angular contact
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6.10 Needle roller / thrust ball be
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6.11 Needle roller / thrust ball be
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6.12 Needle roller / cylindrical ro
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6.13 Needle roller bearing inner ri
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6.13 Needle roller bearing inner ri
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6.14 Needle rollers D w 1 - 6 mm D
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7 Tapered roller bearings Designs a
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Designs and variants Running-in Tap
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Designs and variants Application sp
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Designs and variants The bearing se
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Performance classes 7 805
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Bearing data Inch series Boundary d
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Bearing data Deviating width tolera
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Loads Loads Single row tapered roll
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Loads Table 5 Axial loading of bear
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Loads Fig. 9 ! !! L K a = K r F a a
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Design of bearing arrangements Fits
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Design of bearing arrangements Tabl
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Bearing designations Inch bearings
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C a C b D a d a d b D b r a r b Dim
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C a C b 843 D a d a d b D b r a r b
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a d a d b Dimensions Abutment and f
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C a r a r c D a d a Dimensions Abut
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a r c D a d a C a 869 Dimensions Ab
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a r c D a d a C a 871 Dimensions Ab
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C b r c 873 D b r a d b Dimensions
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C b r c 875 D b r a d b Dimensions
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C a C b D a d a d b D b r a r a r b
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8 Spherical roller bearings Designs
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8 Spherical roller bearings Assortm
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8 Spherical roller bearings Sealing
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8 Spherical roller bearings the rel
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8 Spherical roller bearings Acceler
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8 Spherical roller bearings Bearing
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8 Spherical roller bearings Table 4
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8 Spherical roller bearings Loads M
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8 Spherical roller bearings Tempera
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8 Spherical roller bearings Abutmen
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8 Spherical roller bearings Mountin
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8 Spherical roller bearings Designa
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8.1 Spherical roller bearings d 20
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1 r2 8.1 Spherical roller bearings
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8.2 Sealed spherical roller bearing
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8.3 Spherical roller bearings for v
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8.3 Spherical roller bearings for v
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8.4 Spherical roller bearings on an
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8.5 Spherical roller bearings on a
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9 CARB toroidal roller bearings Des
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Designs and variants Fig. 2 F r Fig
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Designs and variants Fig. 5 Bearing
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Performance classes Bearings for vi
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Bearing data When d > 300 mm: • P
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Bearing data Table 4 Radial interna
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Bearing data Diagram 1 The clearanc
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Bearing data Symbols B = bearing wi
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Design of bearing arrangements Fig.
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Design of bearing arrangements Tabl
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Designation system 9 979
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C a r a r a D a d a Dimensions Abut
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a r a D a d a Dimensions Abutment a
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Principal dimensions Abutment and f
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Principal dimensions Abutment and f
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Dimensions Mass Designations Bearin
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Dimensions Mass Designations Bearin
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10 Thrust ball bearings Designs and
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10 Thrust ball bearings Bearing dat
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10 Thrust ball bearings Temperature
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10.1 Single direction thrust ball b
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10.3 Double direction thrust ball b
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10.3 Double direction thrust ball b
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B r 4 r 3 10.4 Double direction thr
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10 Cylindrical roller thrust bearin
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Designs and variants directions. Th
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Bearing data Bearing data Dimension
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Bearing data Table 3 ISO tolerance
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Designation system Designation syst
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a r a D a d a max. E a min. E b Dim
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D a d a r a r a 1055 max. E a min.
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12 Needle roller thrust bearings De
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12 Needle roller thrust bearings Co
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12 Needle roller thrust bearings Ca
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12 Needle roller thrust bearings Ta
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12 Needle roller thrust bearings Lo
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12 Needle roller thrust bearings De
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12.1 Needle roller and cage thrust
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12.1 Needle roller and cage thrust
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12.2 Needle roller thrust bearings
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13 Spherical roller thrust bearings
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Performance classes Cages Cages in
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Bearing data Table 1 Permissible an
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Loads Symbols A = minimum load fact
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Design of bearing arrangements Desi
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Lubrication Fig. 6 Fig. 7 Fig. 8 13
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Designation system Designation syst
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a 30˚ H a 30˚ r a d b1 d b2 D a d
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a 30˚ H a 30˚ r a r a d b1 d b2 r
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14 Track runner bearings Designs an
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14 Track runner bearings Support ro
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14 Track runner bearings NNTR ...2Z
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14 Track runner bearings KR .. PPA,
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14 Track runner bearings Table 1 Ac
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14 Track runner bearings Table 4 Di
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14 Track runner bearings Lubricatio
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14 Track runner bearings Bearing da
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14 Track runner bearings Loads Sing
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14 Track runner bearings Table 7 IS
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14 Track runner bearings Design of
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14 Track runner bearings Mounting S
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14 Track runner bearings Designatio
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1 r 2 14.1 Single row cam rollers D
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1 r 2 14.2 Double row cam rollers D
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14.3 Support rollers without flange
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14.4 Support rollers without flange
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14.5 Support rollers with flange ri
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14.6 Cam followers D 16 - 32 mm B B
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14.6 Cam followers D 90 mm B B 1 r
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15 Engineered products 15A Sensor b
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15A Sensor bearing units Motor enco
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15A Sensor bearing units Cable conn
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15A Sensor bearing units Bearing da
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15A Sensor bearing units Motor enco
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15A Sensor bearing units Mounting a
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15A Sensor bearing units Roller enc
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15A Sensor bearing units Sensor tec
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15A.1 Motor encoder units d 15 - 45
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15B Bearings for extreme temperatur
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Deep groove ball bearings for extre
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Bearing data Bearing data Deep groo
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Design of associated components Des
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Designation system 15B 1177
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Dimensions Basic static load rating
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1181 15B.1
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15B.3 Y-bearings for extreme temper
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15C Bearings with Solid Oil In most
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15C Bearings with Solid Oil Bearing
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15D SKF DryLube bearings SKF DryLub
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SKF Dry Lube bearings Fig. 2 Assort
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Designs and variants Table 1 Charac
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Bearing data Tapered roller bearing
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Bearing data Diagram 1 Selection gu
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Temperature limits Temperature fact
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Designation system Maintenance SKF
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15E INSOCOAT bearings Electric moto
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15E INSOCOAT bearings Cages INSOCOA
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15E INSOCOAT bearings Loads Minimum
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15E.1 INSOCOAT deep groove ball bea
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15E.2 INSOCOAT cylindrical roller b
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15E.2 INSOCOAT cylindrical roller b
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15F Hybrid bearings Designs and var
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Designs and variants • Reduced ri
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Designs and variants Hybrid deep gr
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Designs and variants Cages Dependin
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Loads Loads Deep groove ball bearin
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Designation systems 15F 1229
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a r a D a d a 15F.1 Dimensions Abut
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a r a D a d a 15F.2 Dimensions Abut
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a r a D a d a 1235 Dimensions Abutm
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a r a D a d a 1237 Dimensions Abutm
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a r b 1239 D a d a d b Dimensions A
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15G NoWear coated bearings NoWear c
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15G NoWear coated bearings Table 1
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15H Polymer ball bearings Designs a
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Designs and variants Fig. 1 Single
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Designs and variants Chemical resis
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Bearing data Table 4 Tolerances for
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Loads Symbols C = basic dynamic loa
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Temperature limits and thermal expa
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Factors influencing bearing perform
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Designation system 15H 1261
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Principal dimensions Basic load rat
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Principal dimensions Basic load rat
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Principal dimensions Basic load Lim
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16 Bearing accessories Adapter slee
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16 Bearing accessories • designat
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16 Bearing accessories Product data
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16 Bearing accessories Designs and
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16 Bearing accessories Lock nuts Lo
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16 Bearing accessories washer liste
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16 Bearing accessories Precision lo
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16 Bearing accessories Product data
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16 Bearing accessories Installation
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16 Bearing accessories Designation
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16.1 Adapter sleeves for metric sha
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16.2 Adapter sleeves for inch shaft
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16.3 Adapter sleeves with inch dime
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16.4 Withdrawal sleeves d 1 35 - 17
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16.5 KM(L) and HM .. T lock nuts M
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16.6 MB(L) lock washers MB 0 - MB 5
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16.7 HM(E) lock nuts Tr 220x4 - Tr
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16.7 HM(E) lock nuts Tr 950x8 - Tr
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16.8 MS locking clips MS 3044 - MS
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16.9 N and AN inch lock nuts G 0.39
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16.9 N and AN inch lock nuts G 11.0
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16.10 W inch lock washers W 00 - W
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16.11 PL inch locking plates PL 48
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16.13 KMFE lock nuts with a locking
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16.14 KMT precision lock nuts with
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16.15 KMTA precision lock nuts with
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16.16 KMD precision lock nuts with
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Indexes Text index ................
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Text index internal clearance 486-4
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Text index chamfers boundary dimens
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Text index sealing solutions 1100,
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Text index G G angular contact ball
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Text index J J angular contact ball
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Text index MR 602 MT33 angular cont
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Text index of self-aligning ball be
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Text index selection criteria 22, 4
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Text index stationary loads 165-166
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Text index effect on relubrication
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Product index Designation Product P
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