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Metric Tapered Roller Bearings

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Manufacturer
  1. FBJ
  2. NKE
  3. SKF
  4. Timken
  5. Unbranded
Internal Diameter (mm)
  1. 15
  2. 17
  3. 20
  4. 22
  5. 23
  6. 24.987
  7. 25
  8. 27
  9. 28
  10. 30
  11. 32
  12. 35
  13. 40
  14. 41
  15. 45
  16. 45.1
  17. 50
  18. 53.975
  19. 55
  20. 60
  21. 65
  22. 70
  23. 75
  24. 80
  25. 85
  26. 90
  27. 95
  28. 100
  29. 105
  30. 110
  31. 120
  32. 130
  33. 140
  34. 150
  35. 160
  36. 170
  37. 180
  38. 190
  39. 200
  40. 220
  41. 240
  42. 260
  43. 280
  44. 300
  45. 320
  46. 340
  47. 360
  48. 570
External Diameter (mm)
  1. 16
  2. 35
  3. 40
  4. 42
  5. 44
  6. 47
  7. 51.4
  8. 52
  9. 55
  10. 55.06
  11. 58
  12. 59.131
  13. 62
  14. 65
  15. 66
  16. 68
  17. 72
  18. 73
  19. 75
  20. 80
  21. 82
  22. 82.55
  23. 85
  24. 88
  25. 89
  26. 90
  27. 95
  28. 98
  29. 100
  30. 105
  31. 110
  32. 115
  33. 120
  34. 125
  35. 130
  36. 135
  37. 140
  38. 145
  39. 150
  40. 155
  41. 160
  42. 165
  43. 170
  44. 175
  45. 180
  46. 185
  47. 190
  48. 195
  49. 200
  50. 210
  51. 215
  52. 220
  53. 225
  54. 230
  55. 240
  56. 250
  57. 260
  58. 270
  59. 280
  60. 285
  61. 290
  62. 300
  63. 310
  64. 320
  65. 340
  66. 360
  67. 380
  68. 400
  69. 420
  70. 440
  71. 460
  72. 480
  73. 540
  74. 920
Combined Width (mm)
  1. 11.75
  2. 12
  3. 13.1
  4. 13.25
  5. 13.7
  6. 14.25
  7. 15
  8. 15.1
  9. 15.25
  10. 15.9
  11. 16.1
  12. 16.25
  13. 16.7
  14. 17
  15. 17.25
  16. 17.65
  17. 18
  18. 18.25
  19. 18.4
  20. 19
  21. 19.25
  22. 19.5
  23. 19.75
  24. 20
  25. 20.25
  26. 20.75
  27. 21
  28. 21.25
  29. 21.5
  30. 21.75
  31. 22
  32. 22.25
  33. 22.5
  34. 22.75
  35. 23
  36. 23.75
  37. 24
  38. 24.25
  39. 24.75
  40. 25
  41. 25.25
  42. 25.75
  43. 26
  44. 26.25
  45. 26.75
  46. 27
  47. 27.25
  48. 28
  49. 28.25
  50. 28.75
  51. 29
  52. 29.25
  53. 29.37
  54. 29.75
  55. 30
  56. 30.5
  57. 31
  58. 31.5
  59. 32
  60. 32.5
  61. 32.75
  62. 32.92
  63. 33
  64. 33.25
  65. 33.5
  66. 34
  67. 34.5
  68. 35
  69. 35.25
  70. 36
  71. 37
  72. 38
  73. 38.25
  74. 38.5
  75. 39
  76. 40
  77. 41
  78. 42
  79. 42.25
  80. 42.5
  81. 43
  82. 43.5
  83. 43.75
  84. 44
  85. 44.5
  86. 45
  87. 45.5
  88. 45.75
  89. 46
  90. 46.5
  91. 47
  92. 48
  93. 48.5
  94. 49
  95. 49.5
  96. 51
  97. 51.5
  98. 52
  99. 53
  100. 54
  101. 54.5
  102. 55
  103. 56
  104. 56.5
  105. 57
  106. 57.15
  107. 58
  108. 59.5
  109. 60
  110. 61.5
  111. 63
  112. 63.5
  113. 63.75
  114. 64
  115. 65
  116. 66.675
  117. 67.5
  118. 67.75
  119. 68
  120. 70
  121. 71.5
  122. 71.75
  123. 72
  124. 75
  125. 76
  126. 77
  127. 77.5
  128. 81.5
  129. 82
  130. 84
  131. 84.5
  132. 87
  133. 90.5
  134. 91
  135. 97
  136. 98.75
  137. 100
  138. 104
  139. 107.75
  140. 114
  141. 127
  142. 137
  143. 149
  144. 195
Width Through Bore (mm)
  1. 11
  2. 12
  3. 13
  4. 14
  5. 15
  6. 16
  7. 17
  8. 17.5
  9. 18
  10. 19
  11. 20
  12. 21
  13. 21.5
  14. 22
  15. 22.5
  16. 23
  17. 24
  18. 25
  19. 25.5
  20. 26
  21. 26.5
  22. 27
  23. 27.783
  24. 28
  25. 29
  26. 30
  27. 31
  28. 32
  29. 32.5
  30. 33
  31. 33.5
  32. 34
  33. 35
  34. 35.5
  35. 36
  36. 37
  37. 38
  38. 39
  39. 40
  40. 41
  41. 42
  42. 43
  43. 44
  44. 45
  45. 46
  46. 47
  47. 48
  48. 49
  49. 50
  50. 51
  51. 52
  52. 53
  53. 55
  54. 57
  55. 57.531
  56. 58
  57. 60
  58. 62
  59. 63.5
  60. 64
  61. 65
  62. 66
  63. 66.675
  64. 67
  65. 68
  66. 70
  67. 73
  68. 75
  69. 76
  70. 77
  71. 80
  72. 86
  73. 87
  74. 92
  75. 93
  76. 98
  77. 100
  78. 102
  79. 108
  80. 120
  81. 130
  82. 140
Cup Width (mm)
  1. 9
  2. 10
  3. 10.5
  4. 11
  5. 11.5
  6. 12
  7. 13
  8. 13.5
  9. 14
  10. 14.5
  11. 15
  12. 15.5
  13. 16
  14. 17
  15. 17.5
  16. 18
  17. 18.5
  18. 19
  19. 19.5
  20. 20
  21. 20.5
  22. 21
  23. 22
  24. 22.5
  25. 23
  26. 23.02
  27. 23.5
  28. 24
  29. 24.5
  30. 25
  31. 25.5
  32. 26
  33. 26.5
  34. 27
  35. 28
  36. 28.5
  37. 29
  38. 29.5
  39. 30
  40. 31
  41. 31.5
  42. 32
  43. 32.5
  44. 33
  45. 34
  46. 35
  47. 35.5
  48. 36
  49. 37
  50. 38
  51. 39
  52. 40
  53. 42
  54. 43
  55. 44
  56. 45
  57. 46
  58. 46.038
  59. 47
  60. 48
  61. 49
  62. 50
  63. 51
  64. 53
  65. 53.975
  66. 54
  67. 55
  68. 57
  69. 58
  70. 60
  71. 63
  72. 65
  73. 67
  74. 69
  75. 71
  76. 74
  77. 75
  78. 78
  79. 82
  80. 85
  81. 90
  82. 100
  83. 106
  84. 115
Precision Class
  1. Standard Precision
Set Number
  1. SET118
  2. SET244
  3. SET315
  4. SET1003
  5. SET1013
  6. SET1014
  7. SET1015
  8. SET1016
  9. SET1017
  10. SET1018
  11. SET1019
  12. SET1020
  13. SET1021
  14. SET1022
  15. SET1023
  16. SET1024
  17. SET1025
  18. SET1026
  19. SET1027
  20. SET1028
  21. SET1029
  22. SET1030
  23. SET1031
  24. SET1032
  25. SET1033
  26. SET1034
  27. SET1035
  28. SET1036
  29. SET1039
  30. SET1040
  31. SET1041
  32. SET1042
  33. SET1043
  34. SET1044
  35. SET1045
  36. SET1046
  37. SET1047
  38. SET1048
  39. SET1049
  40. SET1050
  41. SET1051
  42. SET1052
  43. SET1053
  44. SET1054
  45. SET1055
  46. SET1056
  47. SET1057
  48. SET1058
  49. SET1059
  50. SET1061
  51. SET1062
  52. SET1063
  53. SET1064
  54. SET1065
  55. SET1066
  56. SET1067
  57. SET1068
  58. SET1069
  59. SET1070
  60. SET1071
  61. SET1072
  62. SET1073
  63. SET1074
  64. SET1075
  65. SET1076
  66. SET1078
  67. SET1079
  68. SET1080
  69. SET1081
  70. SET1082
  71. SET1083
  72. SET1120
  73. SET1131
  74. SET1134
  75. SET1171
  76. SET1172
  77. SET1173
  78. SET1174
  79. SET1185
  80. SET1188
  81. SET1189
  82. SET1198
  83. SET1220
  84. SET1221
  85. SET1222
  86. SET1238
  87. SET1239
  88. SET1240
  89. SET1280
  90. SET1282
  91. SET1284
  92. SET1313
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Tapered Roller Bearings:


Tapered roller bearings are a specific type of rolling element bearing designed to support both radial and axial (thrust) loads. They are commonly used in automotive, industrial machinery, and heavy equipment applications due to their durability, load-carrying capacity, and ability to handle combined loads.


Design and Construction:


Tapered roller bearings consist of four main components:


  • Inner Ring (Cone): The inner ring fits onto the shaft and rotates with it. It contains the tapered raceway on which the rollers run.
  • Outer Ring (Cup): The outer ring is fixed within the housing. Like the inner ring, it features a tapered raceway that guides the rolling elements.
  • Rollers: These are conical (tapered) in shape, allowing them to handle both axial and radial loads. The rollers are precisely angled so their surfaces converge at a common point on the bearing axis, ensuring smooth rolling motion and reducing friction.
  • Cage (Retainer): The cage holds the rollers in place and ensures equal spacing, guiding them within the raceways to reduce friction and wear.

Working Principle:


The tapered design of both the rollers and raceways enables the bearing to support combined loads — that is, radial loads (perpendicular to the shaft) and axial loads (parallel to the shaft). The greater the angle of the taper, the higher the axial load-carrying capacity. When the bearing is loaded, the tapered rollers are pressed against the inner and outer raceways, allowing for efficient force transmission and smooth rotation.


Key Features and Advantages:


  • High Load Capacity: Due to the large contact area between the rollers and raceways, tapered roller bearings can support high radial and axial loads.
  • Axial Load Handling: Unlike cylindrical bearings, tapered bearings are designed to handle axial loads in one direction. Paired arrangements (face-to-face or back-to-back) are used when axial loads in both directions are present.
  • Rigidity and Durability: The tapered geometry offers excellent rigidity, making the bearings suitable for applications where shaft deflection must be minimized.
  • Adjustable Clearance: Internal clearance can be adjusted during installation, allowing for fine-tuning of bearing preload and operational precision.

Applications:


Tapered roller bearings are used in a wide range of industries and applications, including:


  • Automotive: Wheel hubs, transmissions, differentials, and steering systems.
  • Industrial Machinery: Gearboxes, pumps, conveyor systems, and crushers.
  • Aerospace: Aircraft landing gear and engine components.
  • Railways and Heavy Equipment: Axle systems and construction machinery.

Variants and Configurations:


  • Single-Row Tapered Roller Bearings: Designed for radial and unidirectional axial loads.
  • Double-Row Tapered Roller Bearings: Handle larger radial and axial loads and are often used where space is limited.
  • Four-Row Tapered Roller Bearings: Common in heavy-duty applications such as rolling mills, providing high radial and axial capacity.

Maintenance and Considerations:


  • Lubrication: Proper lubrication (oil or grease) is essential to prevent wear and overheating.
  • Preload Adjustment: Correct preload is crucial to maximize performance and service life.
  • Alignment: Bearings must be correctly aligned during installation to avoid premature failure.
  • Sealing: In dusty or contaminated environments, sealing is necessary to protect the bearing from debris and moisture.
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