SKF - Rolling Bearings

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15F Hybrid bearings Hybrid cylindrical roller bearings Hybrid cylindrical roller bearings are commonly used in electric motors, especially traction motors, and in applications running under severe operating conditions. They can accommodate heavy radial loads and high speeds. The NU design cylindrical roller bearing, which has two integral flanges on the outer ring and no flanges on the inner ring, is the standard variant for hybrid cylindrical roller bearings († fig. 2). Fig. 2 1224
Designs and variants Cages Depending on their size, SKF hybrid deep groove ball bearings are fitted with one of the following cages: • a stamped steel cage, riveted, ball centred (no designation suffix) • a glass fibre reinforced PA66 cage, snaptype, ball centred (designation suffix TN9) • a glass fibre reinforced PEEK cage, snaptype, ball centred (designation suffix TNH) Depending on their series and size, SKF hybrid cylindrical roller bearings are fitted with one of the following cages: • a glass fibre reinforced PA66 cage, windowtype, roller centred (designation suffix P) • a glass fibre reinforced PEEK cage, windowtype, roller centred (designation suffix PH) • a machined brass cage, riveted, roller centred (designation suffix M) • a machined brass cage, window-type, inner or outer ring centred, depending on the bearing design (designation suffix ML) Hybrid bearings with special steel rings and coatings Hybrid bearings can be customized for specific application requirements. For additional information about the following variants, contact the SKF application engineering service. • bearing rings stabilized for temperatures ≤ 300 °C (570 °F) • bearing rings made of through-hardened stainless steel for enhanced corrosion and wear-resistance and with good hightemperature properties • bearing rings made of through-hardened stainless steel for cryogenic temperatures • bearing rings made of high-temperature tool steel • coating with zinc chromate or thin dense chromium for corrosion protection • coating based on molybdenum for low friction, especially in vacuum or gas applications For additional information about cages, refer to Cages in the relevant product chapter († page 298 for deep groove ball bearings and page 582 for cylindrical roller bearings). The lubricants generally used for rolling bearings do not have a detrimental effect on cage properties. However, some synthetic oils and greases with a synthetic oil base and lubricants containing a high proportion of EP additives, when used at high temperatures, can have a detrimental effect on polyamide cages. For additional information about the suitability of cages, refer to Cages († page 37) and Cage materials († page 152). 15F 1225
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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 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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7 Tapered roller bearings Designati
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7.1 Metric single row tapered rolle
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7.2 Inch single row tapered roller
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7.3 Single row tapered roller beari
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7.4 Matched bearings arranged face-
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7.6 Matched bearings arranged in ta
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8 Spherical roller bearings Designs
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Designs and variants Fig. 4 Fig. 5
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Designs and variants • E design b
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Designs and variants Greases for se
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Designs and variants Bearings for v
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Performance classes Performance cla
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Bearing data Width tolerances for S
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Bearing data Table 5 Radial interna
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Loads Table 6 Symbols B = bearing w
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Design of bearing arrangements Desi
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Design of bearing arrangements Fig.
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Design of bearing arrangements Tabl
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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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Page 1098 and 1099:
Page 1101 and 1102:
14 Track runner bearings Designs an
Page 1103 and 1104:
Designs and variants Support roller
Page 1105 and 1106:
Designs and variants NUTR .. A desi
Page 1107 and 1108:
Designs and variants KR design cam
Page 1109 and 1110:
Designs and variants during mountin
Page 1111 and 1112:
Designs and variants Grease fitting
Page 1113 and 1114:
Designs and variants Cages Dependin
Page 1115 and 1116:
Designs and variants Relubrication
Page 1117 and 1118:
Bearing data Support rollers (R)NA
Page 1119 and 1120:
Loads Cam followers Symbols ... The
Page 1121 and 1122:
Speed limits Temperature limits The
Page 1123 and 1124:
Design of associated components Gui
Page 1125 and 1126:
Mounting 14 1123
Page 1127 and 1128:
Designation system Group 1 Group 2
Page 1129 and 1130:
Outside diameter Basic load ratings
Page 1131 and 1132:
Outside diameter Basic load ratings
Page 1133 and 1134:
Designation Basic load ratings Fati
Page 1135 and 1136:
Designation Basic load ratings Fati
Page 1137 and 1138:
3 r 4 d 1 NUTR .. A PWTR …2RS Des
Page 1139 and 1140:
3 r 4 d 1 NUTR .. A PWTR …2RS Des
Page 1141 and 1142:
d 1 45° r NNTR ...2ZL Designation
Page 1143 and 1144:
B 2 M 1 KR .. B, size ≥ 30 KRV ..
Page 1145 and 1146:
d 1 B 3 B 3 d d 1 c d NUKR .. A (NU
Page 1147 and 1148:
Page 1149:
Page 1153 and 1154:
15A Sensor bearing units Motor enco
Page 1155 and 1156:
Motor encoder units ring that conta
Page 1157 and 1158:
Motor encoder units Power supply SK
Page 1159 and 1160:
Motor encoder units Sensor The perm
Page 1161 and 1162:
50 Motor encoder units Fig. 12 Moun
Page 1163 and 1164:
Motor encoder units Designation sys
Page 1165 and 1166:
Other sensor bearing units Other se
Page 1167 and 1168:
Other sensor bearing units Sensor u
Page 1169:
a r a +1 D 2 d b d a D a Bore diame
Page 1172 and 1173:
15B Bearings for extreme temperatur
Page 1174 and 1175:
15B Bearings for extreme temperatur
Page 1176 and 1177: 15B Bearings for extreme temperatur
Page 1178 and 1179: 15B Bearings for extreme temperatur
Page 1180 and 1181: 15B.1 Single row deep groove ball b
Page 1182 and 1183: 15B.1 Single row deep groove ball b
Page 1184 and 1185: 15B.2 Y-bearings for extreme temper
Page 1187 and 1188: 15C Bearings with Solid Oil Feature
Page 1189 and 1190: Bearings and bearing units with Sol
Page 1191: Designation system Speed limits The
Page 1194 and 1195: 15D SKF DryLube bearings SKF DryLub
Page 1196 and 1197: 15D SKF DryLube bearings Designs an
Page 1198 and 1199: 15D SKF DryLube bearings Bearing da
Page 1200 and 1201: 15D SKF DryLube bearings Table 2 Ra
Page 1202 and 1203: 15D SKF DryLube bearings Selecting
Page 1204 and 1205: 15D SKF DryLube bearings Speed limi
Page 1207 and 1208: 15E INSOCOAT bearings Designs and v
Page 1209 and 1210: Designs and variants INSOCOAT beari
Page 1211 and 1212: Bearing data Bearing data Deep groo
Page 1213 and 1214: Designation system Fig. 2 Designati
Page 1215 and 1216: a r a D a d a 15E.1 Dimensions Abut
Page 1217 and 1218: a r b 15E.2 D a d a d b Dimensions
Page 1219: a r b 1217 D a d a d b Dimensions A
Page 1222 and 1223: 15F Hybrid bearings Designs and var
Page 1224 and 1225: 15F Hybrid bearings Assortment The
Page 1228 and 1229: 15F Hybrid bearings Bearing data De
Page 1230 and 1231: 15F Hybrid bearings Temperature lim
Page 1232 and 1233: 15F.1 Hybrid deep groove ball beari
Page 1234 and 1235: 15F.2 Sealed hybrid deep groove bal
Page 1236 and 1237: 15F.2 Sealed hybrid deep groove bal
Page 1238 and 1239: 15F.3 XL hybrid deep groove ball be
Page 1240 and 1241: 15F.4 Hybrid cylindrical roller bea
Page 1243 and 1244: 15G NoWear coated bearings NoWear c
Page 1245 and 1246: NoWear coating NoWear coated bearin
Page 1247: Designation system Designs and vari
Page 1250 and 1251: 15H Polymer ball bearings SKF polym
Page 1252 and 1253: 15H Polymer ball bearings Materials
Page 1254 and 1255: 15H Polymer ball bearings Bearing d
Page 1256 and 1257: 15H Polymer ball bearings Loads The
Page 1258 and 1259: 15H Polymer ball bearings Diagram 1
Page 1260 and 1261: 15H Polymer ball bearings Permissib
Page 1262 and 1263: 15H Polymer ball bearings Designati
Page 1264 and 1265: 15H.1 Polymer single row deep groov
Page 1266 and 1267: 15H.1 Polymer single row deep groov
Page 1268 and 1269: 15H.2 Polymer thrust ball bearings
Page 1271 and 1272: 16 Bearing accessories Adapter slee
Page 1273 and 1274: Adapter sleeves Fig. 2 Sleeve with
Page 1275 and 1276: Adapter sleeves Fig. 7 E (with a KM
Page 1277 and 1278:
Withdrawal sleeves Withdrawal sleev
Page 1279 and 1280:
Withdrawal sleeves Product data Dim
Page 1281 and 1282:
Lock nuts Fig. 14 Fig. 17 MB / W lo
Page 1283 and 1284:
Lock nuts Precision lock nuts with
Page 1285 and 1286:
Lock nuts 1283 16
Page 1287 and 1288:
Lock nuts with an integral locking
Page 1289 and 1290:
Lock nuts KMD precision lock nuts K
Page 1291 and 1292:
Designation system Suffix Sleeves B
Page 1293 and 1294:
Page 1295 and 1296:
Page 1297 and 1298:
Principal dimensions d 1 d d 3 B 1
Page 1299 and 1300:
Principal dimensions d 1 d d 3 B 1
Page 1301 and 1302:
Page 1303 and 1304:
Page 1305 and 1306:
Page 1307 and 1308:
Principal dimensions Thread Mass De
Page 1309 and 1310:
Page 1311 and 1312:
Page 1313 and 1314:
Page 1315 and 1316:
Page 1317 and 1318:
Page 1319 and 1320:
Dimensions Axial load carrying capa
Page 1321 and 1322:
Designation Dimensions Mass d d 1 d
Page 1323 and 1324:
Dimensions Mass Designations Lock n
Page 1325 and 1326:
1323 16.7
Page 1327 and 1328:
Designations Dimensions Mass Lockin
Page 1329 and 1330:
Threads 1) Dimensions Mass Designat
Page 1331 and 1332:
1329 16.9
Page 1333 and 1334:
Designation Dimensions Mass d d 1 d
Page 1335 and 1336:
16.12 KMK lock nuts with an integra
Page 1337 and 1338:
Page 1339 and 1340:
Page 1341 and 1342:
Page 1343 and 1344:
1341 16.16
Page 1345 and 1346:
Text index A A angular contact ball
Page 1347 and 1348:
ass cage types 37-38 in polymer bal
Page 1349 and 1350:
sealing solutions 579-581, 599, 668
Page 1351 and 1352:
extreme temperature bearings 1169-1
Page 1353 and 1354:
housings 24 fits and tolerance clas
Page 1355 and 1356:
M M angular contact ball bearings 4
Page 1357 and 1358:
O ocean-going vessels 83 off-highwa
Page 1359 and 1360:
values for CARB toroidal roller bea
Page 1361 and 1362:
SM 721 small bearings 275, 285 smea
Page 1363 and 1364:
terminology 25 types 33-35 thrust c
Page 1365 and 1366:
design 1223 dimensional stability 1
Page 1367 and 1368:
Designation Product Product table N
Page 1369 and 1370:
Page 1371 and 1372:
Page 1373 and 1374:
Page 1375 and 1376:
Page 1377:
1375 Index Index
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SKF - Rolling Bearings

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