B106 Taper Roller Brgs.

8/11/2019 B106 Taper Roller Brgs.

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ROLLING BEARINGS


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Besides metric design tapered roller bearings, there are also inch designbearings. For the cone assemblies and cups of inch design bearings, exceptfour-row tapered roller bearings, the bearing numbers are approximatelyformulated as follows:

For tapered roller bearings, besides single-row bearings, there are alsovarious combinations of bearings.

The cages of tapered roller bearings are usually pressed steel.

Table 1 Design and Featured of Combinations of Tapered Roller Bearings

Table 2 Tolerances for Cones(CLASS K)

Figure Arrangement Examples of Bearing No. Features

Back-to-back HR30210JDB+KLR10

Face-to-face HR30210JDF+KR

KBE Type 100KBE31+L

KH Type 110KH31+K

over incl high low max max max

10 18 0 12 12 9 15

18 30 0 12 12 9 18

30 50 0 12 12 9 20

50 80 0 15 15 11 25

80 120 0 20 20 15 30

120 180 0 25 25 19 35

180 250 0 30 30 23 50250 315 0 35 35 26 60

315 400 0 40 40 30 70

TOLERANCES AND RUNNING ACCURACY

METRIC DESIGN TAPERED ROLLERBEARINGS Table 8.3 (Pages A64 to A67)

INCH DESIGN TAPERED ROLLER

BEARINGS Table 8.4 (Pages A68 and A69)Among inch design tapered roller bearings, there are those to which the

following precision classes apply. For more details, please consult with NSK.

(1) J line bearings(in the bearing tables, bearings preceeded by )

Nominal Bore Diameter

d(mm)

& dmp Vdp Vdmp Kia

Units : m

Table 3 Tolerances for Cups(CALSS K)

over incl high low max max max

18 30 0 12 12 9 18

30 50 0 14 14 11 20

50 80 0 16 16 12 25

80 120 0 18 18 14 35

120 150 0 20 20 15 40

150 180 0 25 25 19 45

180 250 0 30 30 23 50

250 315 0 35 35 26 60

315 400 0 40 40 30 70400 500 0 45 45 34 80

Nominal OutsideDiameterD (mm)

& D mp VDp VD mp Kea

Units : m

LM 1 19 49

Contact AngleSymbol

Load LimitSymbol

Series No. AdditionalSymbol

Design No.

Example:

Two standard bearings are combined. The bearing clearances

are adjusted by cone spacers or cup spacers. The cones and

cups and spacers are marked with serial numbers and

mating marks. Components with the same serial number can

be assembled referring to the matching symbols.

The KBE type is a back-to-back arrangement of bearings with

the cup and spacer integrated, and the KH type is a face-to-

face arrangement in which the cones are integrated. Since

the bearing clearance is adjusted using spacers, it is

necessary for components to have the same serial number

for assembly with reference to matching symbols.

B 109B 108


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SINGLE-ROW TAPERED ROLLER BEARINGS (INCH DESIGN)

Bore Diameter 170.000 206.375 mm


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B 166 B 167

jd

r

r

jD

T

C

B

a

jD jd jd

ra

ra

a b ajD b

170.000 23 0.00 0 3 9.00 0 3 8.00 0 3 1.00 0 3 .0 2 .5 27 8 0 00 5 20 0 00 28 30 0 5 3 0 00 1 300 1 8002 40 .0 00 4 6.00 0 4 4.50 0 3 7.00 0 3 .0 2 .5 3 80 0 00 7 20 0 00 39 00 0 7 3 0 00 1 300 1 800

174.625 24 7.65 0 4 7.62 5 4 7.62 5 3 8.10 0 3 .5 3 .3 34 5 0 00 7 05 0 00 35 50 0 7 1 5 00 1 300 1 700

177.800 22 7.01 2 3 0.16 2 3 0.16 2 2 3.02 0 1 .5 1 .5 18 1 0 00 4 15 0 00 18 50 0 4 2 0 00 1 300 1 8002 47 .6 50 4 7.62 5 4 7.62 5 3 8.10 0 3 .5 3 .3 3 45 0 00 7 05 0 00 35 50 0 7 1 5 00 1 300 1 7002 60 .3 50 5 3.97 5 5 3.97 5 4 1.27 5 3 .5 3 .3 4 55 0 00 8 35 0 00 46 50 0 8 5 0 00 1 200 1 700

190.000 26 0.00 0 4 6.00 0 4 4.00 0 3 6.50 0 3 .0 2 .5 37 0 0 00 7 30 0 00 38 00 0 7 4 5 00 1 100 1 600190.500 26 6.70 0 4 7.62 5 4 6.83 3 3 8.10 0 3 .5 3 .3 34 5 0 00 7 20 0 00 35 00 0 7 3 0 00 1 100 1 500200.000 300 .000 65.000 62.000 51.000 3 .5 2 .5 615 000 1 130 000 62 500 116 000 1 000 1 400

203.200 28 2.57 5 4 6.03 8 4 6.03 8 3 6.51 2 3 .5 3 .3 36 5 0 00 8 00 0 00 37 50 0 8 1 5 00 1 000 1 400206.375 28 2.57 5 4 6.03 8 4 6.03 8 3 6.51 2 3 .5 3 .3 36 5 0 00 8 00 0 00 37 50 0 8 1 5 00 1 000 1 400

Boundary Dimensions(mm)

Cone Cupd D T B C r

min

Limiting Speeds

(min1

)Grease Oil

Basic Load Ratings

(N) {kgf}

Cr C0r Cr C0r

JHM 534149 JHM 534110 184 178 217 224 3 2.5 4 3.2 0.38 1 .6 0.86 3.1 1.3 JM 734449 JM 734410 185 180 222 232 3 2.5 50.5 0.44 1.4 0.75 4.42 2.02

67787 67720 1 92 185 229 240 3.5 3.3 52.4 0.44 1.4 0.75 4.88 2.33

36990 36920 189 186 214 221 1.5 1.5 42.9 0.44 1.4 0.75 2.1 0.90767790 67720 1 94 188 229 240 3.5 3.3 52.4 0.44 1.4 0.75 4.56 2.33

M 236849 M 236810 1 95 192 241 249 3.5 3.3 47.5 0.33 1.8 0.99 6.49 2.86

JM 738249 JM 738210 206 200 242 252 3 2.5 56.4 0.48 1 .3 0.69 4.73 2.267885 67820 2 09 203 246 259 3.5 3.3 57.9 0.48 1.3 0.69 5.4 2.64

JHM 840449 JHM 840410 2 23 215 273 289 3.5 2.5 73.1 0.52 1.2 0.63 10.3 5.19

67983 67920 2 22 216 260 275 3.5 3.3 61.9 0.51 1.2 0.65 6.03 2.8267985 67920 2 24 219 260 275 3.5 3.3 61.9 0.51 1.2 0.65 5.66 2.82

Bearing Numbers

CONE CUP

Abutment and Fillet Dimensions(mm)

Cone Cupda db Da Db ra

max

Mass(kg)

approxCONE CUP

Eff. Load

Centers

(mm)a

Constant

e

Axial LoadFactors

Y1 Y0

Note The tolerances are listed in Tables 2, 3 and 4 on Pages B109 and B110.

Fa/Fre Fa/Fr>e

X Y X Y

1 0 0.4 Y1

Dynamic Equivalent Load

P =X Fr+Y Fa

Static Equivalent Load

P0 =0.5Fr+Y0Fa

When Fr>0.5Fr+Y0Fa, use P0 =FrThe values of e, Y1 , and Y0 are

given in the table below.


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DOUBLE-ROW TAPERED ROLLER BEARINGS (INCH DESIGN)

Bore Diameter 206 260 mm

B


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B 177B 176B 176

jd

r

r

jD

B

C

2

1

jdjD b

rb

ra

a

Fa/Fre Fa/Fr>eX Y X Y

1 Y3 0.67 Y2

Dynamic Equivalent Load

P =X Fr+Y Fa

Static Equivalent Load

P0 =Fr+Y0Fa

The values of e, Y2 , Y3 , and Y0 are

given in the table below.

Bearing Numbers

Abutment and Fillet Dimensions(mm)

da Db ra rbmin min max max

Mass(kg)

approx

Constant

e

Axial LoadFactors

Y2 Y3 Y0

Remarks For other double-row tapered roller bearings not listed above, please contact NSK.

Boundary Dimensions(mm)

d D B2 C r r1min min

Limiting Speeds (min1)

Grease Oil

Basic Load Ratings

(N)Cr C0r

206 283 102 83 4 1.5 580 000 1 430 000 900 1 200

210 355 116 103 4 1.5 905 000 1 520 000 700 1 000

220 300 110 88 3 1 730 000 1 710 000 800 1 100340 90 80 4 1.5 695 000 1 280 000 700 1 000340 113 90 4 1.5 920 000 1 830 000 700 1 000

370 120 107 5 1.5 1 110 000 1 940 000 700 1 000370 150 120 5 1.5 1 460 000 2 760 000 700 1 000400 158 122 5 1.5 1 390 000 2 300 000 600 900

240 360 92 82 4 1.5 780 000 1 490 000 700 900360 115 92 4 1.5 1 020 000 2 040 000 700 900400 128 114 5 1.5 1 180 000 2 190 000 600 900

400 160 128 5 1.5 1 620 000 3 050 000 600 900400 209 168 5 1.5 2 220 000 4 450 000 600 900

250 380 98 87 4 1 795 000 1 460 000 600 900

260 400 104 92 5 1.5 895 000 1 670 000 600 800400 130 104 5 1.5 1 210 000 2 460 000 600 800440 144 128 5 1.5 1 540 000 2 760 000 600 800

440 172 145 5 1.5 1 870 000 3 500 000 600 800440 180 144 5 1.5 2 110 000 4 150 000 600 800

206 KBE 2801+L 227 275 3 1.5 0.51 2.0 1.3 1.3 18.1

210 KBE 31+L 231 338 3 1.5 0.46 2.2 1.5 1.4 41.7

220 KBE 3001+L 238 292 2.5 1 0.37 2.7 1.8 1.8 21.2220 KBE 30+L 241 324 3 1.5 0.40 2.5 1.7 1.6 27.9220 KBE 030+L 241 327 3 1.5 0.40 2.5 1.7 1.6 34.7

220 KBE 31+L 247 345 4 1.5 0.39 2.6 1.7 1.7 48.3220 KBE 031+L 247 349 4 1.5 0.39 2.6 1.7 1.7 60.2220 KBE 42+L 247 371 4 1.5 0.40 2.5 1.7 1.6 74.2

240 KBE 30+L 261 344 3 1.5 0.39 2.6 1.7 1.7 30.1240 KBE 030+L 261 344 3 1.5 0.35 2.9 2.0 1.9 37.3240 KBE 31+L 267 380 4 1.5 0.43 2.3 1.6 1.5 60.0

240 KBE 031+L 267 378 4 1.5 0.39 2.6 1.7 1.7 73.6240 KBE 4003+L 267 384 4 1.5 0.33 3.0 2.0 2.0 96.4

250 KBE 3801+L 271 365 3 1 0.40 2.5 1.7 1.6 35.5

260 KBE 30+L 287 379 4 1.5 0.40 2.5 1.7 1.6 43.4260 KBE 030+L 287 382 4 1.5 0.40 2.5 1.7 1.6 54.1260 KBE 31+L 287 416 4 1.5 0.39 2.6 1.7 1.7 82.5

260 KBE 4401+L 287 414 4 1.5 0.38 2.6 1.8 1.7 98.1260 KBE 031+L 287 416 4 1.5 0.39 2.6 1.7 1.7 104.0

B106 Taper Roller Brgs.

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