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Contents

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Symbols ............................................................................................................................................... SYM 1 Tolerance Tables .................................................................................................................................TOL 1 Clearance Tables ................................................................................................................................ CLR 1

Angular Contact Ball Bearings Single Row Metric Series ........................................................................................................ ABB 1 Single Row Inch Series ........................................................................................................... ABB 4 Double Row Metric Series ....................................................................................................... ABB 6

Ball Bearings Single Row Metric Series ........................................................................................................... BB 1 Single Row Inch Series .............................................................................................................. BB 8 Double Row Metric Series ........................................................................................................ BB 12 Wide Metric Series ................................................................................................................... BB 14 Four-Point Contact Metric Series ............................................................................................. BB 16 Self Aligning Metric Series........................................................................................................ BB 18 Self Aligning Inch Series........................................................................................................... BB 21 Magneto Metric Series.............................................................................................................. BB 24 Thrust Metric Series ................................................................................................................. BB 25 Thrust Inch Series .................................................................................................................... BB 29 Thrust Full Complement Inch Series ........................................................................................ BB 32

Barrel Roller Bearings ........................................................................................................................ BRB 1

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Cylindrical Roller Bearings Single Row Metric Series ........................................................................................................ CRB 1 Single Row Inch Series ......................................................................................................... CRB 28 Double Row Metric Series ..................................................................................................... CRB 33 Full Complement Metric Series ............................................................................................. CRB 35 Without Inner Ring ................................................................................................................. CRB 36 Thrust Metric Series .............................................................................................................. CRB 37 Thrust Inch Series ................................................................................................................. CRB 40

Flexible Roller Bearings..................................................................................................................... FRB 1

Needle Roller Bearings Metric Series ............................................................................................................................ NRB 1 Inch Series ............................................................................................................................... NRB 4 Without Inner Ring Metric Series ............................................................................................. NRB 6 Without Inner Ring Inch Series .............................................................................................. NRB 10 Inner Ring Inch Series ........................................................................................................... NRB 12 Cage Assemblies ................................................................................................................... NRB 15

Spherical Roller Bearings .................................................................................................................. SRB 1 Radial Metric Series ................................................................................................................ SRB 1 Thrust Metric Series ................................................................................................................ SRB 7

Tapered Roller Bearings .................................................................................................................... TRB 1 Single Row Metric Series ........................................................................................................ TRB 1 Single Row Inch Series ........................................................................................................... TRB 8 Double Row Metric Series ..................................................................................................... TRB 15 Four Row Metric & Inch Series .............................................................................................. TRB 17 Thrust Inch Series ................................................................................................................. TRB 18

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Symbols

Nomenclature

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Symbol d ds dmp

Definition Nominal bore diameter Single bore diameter 1. Mean bore diameter; arithmetical mean of the largest and smallest single bore diameters in one plane 2. Mean diameter at the small end of a tapered bore; arithmetical mean of the largest and smallest single diameters Deviation of single bore diameter from the nominal Deviation of the mean bore diameter from the nominal Nominal diameter at theoretical large end of a tapered bore Mean diameter at theoretical large end of tapered bore; arithmetical mean of the largest and smallest single bore diameters Deviation of the mean bore diameter at the theoretical large end of a tapered bore from the nominal Bore diameter variation; difference between the largest and smallest single bore diameters in one plane Mean bore diameter variation; difference between the largest and smallest mean bore diameters in one plane Nominal outside diameter Single outside diameter Mean outside diameter; arithmetical mean of the largest and smallest single outside diameters in one plane Deviation of single outside diameter from the nominal Deviation of the mean outside diameter from the nominal Outside diameter variation; difference between the largest and smallest single outside diameters in one plane Mean bore diameter variation; difference between the largest and smallest mean outside diameters of one ring or washer Single chamfer dimension Smallest single chamfer dimension

Symbol r1, r3 r2, r4 B, C Bs, Cs B1s, C1s

Definition Radial direction chamfer dimension Axial direction chamfer dimension Nominal width of inner ring and outer ring, respectively Single width of inner ring and outer ring, respectively Single width of inner ring and outer ring, respectively, of a bearing specifically manufactured for paired mounting Deviation of single, inner ring or outer ring width, from the nominal Ring width variation; difference between the largest and smallest single widths of inner ring and or outer ring, respectively 1. Single width of taper roller bearing; distance between cone back face and cup back face 2. Single height of single direction thrust bearing except spherical roller thrust bearing 1. Single width of cup assembled with master cup of taper roller bearing 2. Single height of double direction thrust ball bearing with seating washer 1. Single width of cup assembled with master cone of taper roller bearing 2. Single height of double direction thrust bearing Single height of double direction thrust ball bearing with seating washer Single height of spherical roller thrust bearing 1. Deviation of single width of taper roller bearing from the nominal 2. Deviation of single height of thrust bearing from the nominal Radial runout of assembled bearing inner ring and assembled bearing outer ring, respectively Side face runout with reference to bore Outside inclination variation; variation in inclination of outside cylindrical surface to outer ring side face Side face runout of assembled bearing inner ring and assembled bearing outer ring, respectively Thickness variation, measured from middle of raceway to back face of shaft washer and of housing washer, respectively

ds dmp d1 d1mp

Bs, Cs VBs, VCs

Ts

d1mp

T1s

Vdp

T2s

Vdmp

T3s T4s Ts, T1s

D Ds Dmp

Ds Dmp VDp

Kia, Kea Sd SD

VDmp

Sia, Sea Si, Se

rs rs min

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| SYM 1

Normal TolerancesRadial Bearingsexcept taper roller bearings

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Inner Ringd mm over 2,5 10 18 30 50 80 120 180 250 315 400 500 630 800 1000 1250 1600 incl. 2,5 10 18 30 50 80 120 180 250 315 400 500 630 800 1000 1250 1600 2000 dmp m high 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 low -8 -8 -8 -10 -12 -15 -20 -25 -30 -35 -40 -45 -50 -75 -100 -125 -160 -200 Vdp Diameter Series 7, 8, 9 max 10 10 10 13 15 19 25 31 38 44 50 56 63 0, 1 max 8 8 8 10 12 19 25 31 38 44 50 56 63 2, 3, 4 max 6 6 6 8 9 11 15 19 2