Tapered Roller Bearings

Tapered roller bearing types and characteristics Tapered roller bearings can take both axial and radial loads. The axial load carrying capacity of the bearings is largely determined by the contact angle α as shown in the figure below. If the contact angle α is larger, then the axial load carrying capacity is higher and vice versa.

Tapered roller bearings are designed in such a way that vertices of the cone for each roller and those for the inner and outer raceways coincides on the bearing axis or extensions of the raceways and rollers converge at a common point on the axis of rotation. This results in true rolling motion of the rollers on the raceways at every point along the rollers. The tapered roller bearings support radial loads and axial loads from one direction only. The line contact between rollers and raceways provide the bearings with a high load carrying capacity.

Steep angle tapered roller bearing with exceptionally steep cone angle enables the bearings to take heavier axial load. The bearings are of separable type, enabling separate mounting of cups and cones.

Since the tapered roller bearings can absorb thrust loads in one direction only, these bearings should generally be installed as opposed mountings. The correct amount of radial and axial clearance is obtained by adjusting the two bearings against each other.

Besides, double row and four row tapered roller bearings are also widely used for heavy loads such as rolling mills. A single row tapered roller bearing can be located endwise in one direction only.

Single Row (TRB)

Double Row (TRB)

Four Row (TRB) Four Row Tapered roller bearings are made up of two double row inner rings and two double row outer rings. These bearings are used for heavy load capacity as in the roller necks of rolling mills. The life of large bearings is extended by using case hardened steel, hollow rollers and pin-type cages

Tapered Roller Thrust

UKN Tapered Roller Thrust bearings include rollers that have conical sections. These bearings are designed primarily to support axial loads at contact angles between 30˚ and 90˚. These bearing are suited for applications where extremely high thrust loads like in crane hooks. These bearings can be supplied with a full complement of rollers.

Tapered Roller Bearing
Bearing no. Dimension(mm) Bearing no. Dimension(mm) Mass Kg.
  d D T     d D T  
11590/11520 15.875 42.862 14.288 0.1 25880/25820 38.487 73.025 23.812 0.45
LM11749LM11710 17.462 39.878 14.288 0.08 LM29749/LM29710 38.1 65.088 18.034 0.24
LM11749LM11910 19.05 45.237 15.494 0.12 LM29749/LM29711 38.1 65.088 19.812 0.25
09067/09195 19.05 49.255 18.034 0.18 2788/2720 38.1 76.2 23.812 0.5
09074/09195 19.05 49.225 19.645 0.19 3490/3420 38.1 79.375 29.37 0.67
21075/21212 19.05 53.975 22.225 0.25 HM801346/HM801310 38.1 82.55 29.37 0.78
0908/09196 20.625 49.225 23.02 0.2 2789/2720 39.688 76.2 23.812 0.48
MI2649/MI2610 21.43 50.005 17.526 0.17 LM300849/LM300811 40.988 67.975 17.5 0.24
LM12748/LM12710 21.43 45.237 15.494 0.12 18590/18520 41.275 73.025 16.667 0.28
LM12749/LM12710 21.988 45.237 15.494 0.12 LM501349/LM501310 41.275 73.431 19.558 0.33
LM12749/LM12711 21.988 45.974 15.494 0.12 LM501349/LM501314 41.275 73.431 21.43 0.35
1380/1328 22.225 52.388 19.368 0.2 LM501349/LM501311 41.275 73.431 23.012 0.37
L44643/L44610 25.4 50.292 14.224 0.13 11162/11300 41.275 76.2 18.009 0.34
M84548/M84510 25.4 57.15 19.431 0.24 25577/25520 42.875 82.931 23.812 0.57
15101/15245 25.4 62 19.05 0.31 25580/25520 44.45 82.931 23.812 0.57
L44649/L44610 26.988 50.292 14.224 0.11 3782/3720 44.46 93.264 30.162 0.96
1988/1922 28.575 57.15 19.845 0.22 535A/532A 44.45 111.125 38.1 1.9
15112/15245 28.575 62 19.05 0.28 LM603049/LM803011 45.242 77.788 19.842 0.37
M86649/M86610 28.575 64.292 21.433 0.35 25590/25520 45.618 82.931 23.812 0.55
02474/02420 28.575 68.262 22.225 0.42 25590/25523 45.618 82.931 26.988 0.59
L45449/L45410 29 50.292 14.224 0.11 25590/25522 45.618 83.058 23.876 0.55
14118/14276 30 69.012 19.645 0.37 LM503349/LM503310 45.618 74.976 18 0.31
14118/14283 30 72.085 22.385 0.45 386A/382A 47.625 96.838 21 0.73
M88649/M86610 30.162 64.292 21.433 0.33 JLM04948/JLM104910 50 82 21.976 0.42
LM67048/LM67010 31.75 59.131 15.875 0.18 JLM04948/JLM104911 50 82.55 21.59 0.42
15123/15245 31.75 62 18.161 0.24 JLM04949/JLM104912 50.8 82..550 21.59 0.42
2580/2520 31.75 66.421 25.4 0.4 388A/382A 50.8 88.9 20.638 0.5
2582/2523 31.75 69.85 23.812 0.45 28580/28521 50.8 92.075 24.608 0.72
M88048/M88010 33.338 68.252 22.225 0.387 3780/3720 50.8 93.254 30.162 0.87
M88048/M88011 33.338 68.262 22.225 0.38 387A/382A 57.15 96.836 21 0.59
2780/2720 33.338 76.2 23.812 0.51 HM212049/HM212011 66.675 122.238 38.1 1.85
LM45648/LM48510 34.925 66.088 18.034 0.25 482/472 69.85 120 29.794 1.35
HM88649/HM88610 34.925 72.233 25.4 0.5 29685/29620 73.025 12.712 25.4 0.89
25877/2582 34.925 73.025 23.812 0.47 575/572 76.2 39.992 36.512 2.44
L68145/L68110 34.988 59.131 15.875 0.17 580/573 82.53 39.992 36.512 2.22
L68149/L68111 34.988 59.974 15.875 0.17          

Tapered RB Metric
Bearing no. Dimension(mm) Bearing no. Dimension(mm) Mass Kg.
  d D T     d D T  
30202 15 35 11.75 0.056 31305 25 62 18.25 0.262
30203 17 40 13.25 0.08 31306 30 72 20.75 0.392
30204 20 47 15.25 0.127 31307 35 80 22.75 0.514
30205 25 52 16.25 0.154 31308 40 90 25.25 0.727
30206 30 62 17.25 0.241 31309 45 100 27.25 0.944
30207 35 72 18.25 0.344 31310 50 110 29.25 1.21
30208 40 80 19.75 0.435 31311 55 120 315 1.56
30209 45 85 20.75 0.495 31312 60 130 33.5 1.9
30210 50 90 21.75 0.563 31313 65 140 38 2.37
30211 55 100 22.75 0.74 31314 70 150 38 2.86
30212 60 110 23.75 0.949 31315 75 160 40 3.38
30213 65 120 24.75 1.18 31316 80 170 42.5 4.05
30214 70 125 26.25 1.26 31317 85 180 44.5 4.6
30215 75 130 27.25 1.41 31318 90 190 46.5 5.9
30216 80 140 28.25 1.72 31319 95 200 49.5 6.95
30217 85 150 30.5 2.14 31320 100 215 58.5 8.6
30218 90 160 32.5 2.66 31322 110 240 63 12
30219 95 170 34.5 3.07 31324 120 260 68 15.5
30220 100 180 37 3.78 31326 130 280 72 18.5
30221 110 190 39 4.39 31328 140 300 77 24.5
30222 120 200 41 5.18 30309 60 100 27.25 1.01
30224 130 215 43.5 6.23 30310 65 110 29.25 1.31
30226 20 230 43.75 7.25 30311 70 120 31.5 1.66
30302 25 42 14.25 0.092 30312 75 130 33.5 2.06
30303 30 47 15.25 0.134 30313 80 140 36 2.55
30304 35 52 16.25 0.18 30314 85 150 38 3.06
30305 40 62 18.25 0.272 30315 90 160 40 3.57
30306 45 72 20.75 0.408 30316 95 170 42.5 4.41
30307 50 80 22.75 0.54 30317 100 180 44.5 5.2
30308 55 90 25.25 0.764 30318 105 190 46.5 6.03
30322 110 240 54.5 11 30319 110 200 49.5 6.98
30324 120 260 59.5 14 30320 100 180 49 5.12
30326 130 280 63.75 17 32221 105 190 53 6.26
32004 20 42 15 0.098 32222 110 200 56 7.42
32005 25 47 15 0.114 32224 120 215 61.5 9.15
32006 30 55 17 0.166 32226 130 230 67.75 11.5
32007 35 62 18 0.224 32304 20 52 22.25 0.23
32008 40 68 19 0.273 32305 25 62 25.26 0.381
32009 45 75 20 0.346 32306 30 72 28.75 0.583
32010 50 80 20 0.366 32307 35 80 32.75 0.787
32011 55 90 23 0.563 32308 40 90 35.25 1.08
32012 60 95 23 0.576 32309 45 100 38.25 1.46
32013 65 100 23 0.63 32310 50 110 42.25 1.92
32014 70 110 25 0.848 32311 55 120 45.5 2.44
32015 75 115 25 0.909 32313 60 130 48.5 3.02
32016 80 125 29 1.28 32314 70 150 54 4.46
32017 85 130 29 1.35 32315 75 160 58 5.35
32018 90 140 32 1.79 32209 45 85 24.75 0.607
32019 95 145 32 1.83 32210 50 90 24.75 0.648
32020 100 150 32 1.91 32211 55 100 26.75 0.876
32021 105 160 35 2.42 32212 60 110 29.75 1.18
32022 110 170 38 3.07 32213 65 120 32.75 1.58
32024 120 180 38 3.25 32214 70 125 33.25 1.68
32026 130 200 45 5.25 32215 75 130 33.25 1.74
32028 140 210 45 5.25 32216 80 140 35.25 2.18
32204 20 47 19.25 0.162 32217 85 150 38.5 2.75
32205 25 52 19.25 0.187 32218 90 160 42.5 3.49
32206 30 52 21.25 0.301 32219 95 170 45.5 4.8
32207 35 72 24.25 0.457 33116 80 130 37 1.9
32208 40 80 24.25 0.558 33117 85 140 41 2.45
32316 80 170 61.5 6.41 33118 90 150 45 3.1
32317 85 180 63.5 7.15 33205 25 52 22 0.217
32318 90 190 67.5 8.57 33206 30 62 25 0.344
32319 95 200 71.5 10.1 33207 35 72 28 0.531
32320 100 215 77.5 12.7 33208 40 80 32 0.728
32321 105 225 81.5 14.5 33209 45 85 32 0.783
32322 110 240 84.5 17 33210 50 90 32 0.852
32324 120 260 90.5 21.5 33211 55 100 35 1.15
33108 40 75 26 0.51 33212 60 110 38 1.55
33109 45 80 26 0.542 33213 65 120 41 1.98
33110 50 85 26 0.58 33214 70 125 41 2.1
33111 55 95 30 0.846 33215 75 130 41 2.2
33112 60 100 30 0.912 33216 80 140 46 2.92
33113 65 110 34 1.28 33217 85 150 49 3.58
33114 70 120 37 1.7 31304 20 52 16.5 0.17
33115 75 125 37 1.8          

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