Taper Roller Bearings

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Taper Roller Bearings

  1. 1. Taper Roller Bearings
  2. 2. Taper Roller Bearings
  3. 3. Taper Roller Bearing Components
  4. 4. Geometry Bearing axisApex
  5. 5. Dimension SeriesDiameter series Width series
  6. 6. Shaft TolerancesShaft Shaft diameter tolerancesdiameter(Nominal g6 h6 j6 k6 m6 n6 p6bearing borediameter) Adjusted values for bearing with inch dimensionsover incl. high low high low high low high low high low high low high lowmm µm10 18 +4 –7 +10 –1 +18 +7 +22 +11 +28 +17 +33 +22 +39 +2818 30 +4 –9 +11 –2 +20 +7 +26 +13 +32 +19 +39 +26 +46 +3330 50 +3 –13 +12 –4 +23 +7 +30 +14 +37 +21 +45 +29 +54 +3850 76,2 +4 –15 +14 –5 +26 +7 +35 +16 +44 +25 +53 +34 +65 +4676,2 80 +10 –9 +20 +1 +32 +13 +41 +22 +50 +31 +59 +40 +71 +5280 120 +11 –11 +23 +1 +36 +14 +48 +26 +58 +36 +68 +46 +82 +60120 180 +11 –14 +25 0 +39 +14 +53 +28 +65 +40 +77 +52 +93 +68180 250 +15 –14 +30 +1 +46 +17 +63 +34 +76 +47 +90 +61 +109 +80
  7. 7. Housing TolerancesHousing Housing bore tolerancesborediameter(Nominal H7 J7 J6 K6 K7 M6 M7 N7 P7bearing out-side diameter) Adjusted values for bearing with inch dimensionsover incl. high low high low high low high low high low high low high low high low high lowmm µm24 30 +37 +16 +28 +7 +24 +11 +18 +5 +22 +1 +12 –1 +16 –5 +9 –12 +2 –1930 50 +42 +17 +31 +6 +27 +11 +20 +4 +24 –1 +13 –3 +17 –8 +9 –16 0 –2550 80 +48 +18 +36 +6 +31 +12 +22 +3 +27 –3 +13 –6 +18 –12 +9 –21 –3 –3380 120 +56 +21 +43 +8 +37 +15 +25 +3 +31 –4 +15 –7 +21 –14 +11 –24 –3 –38120 150 +62 +22 +48 +8 +40 +15 +26 +1 +34 –6 +14 –11 +22 –8 +10 –30 –6 –46150 180 +65 +25 +51 +11 +43 +18 +29 +4 +37 –3 +17 –8 +25 –15 +13 –27 –3 –43180 250 +71 +25 +55 +9 +47 +18 +30 +1 +38 –8 +17 –12 +25 –21 +11 –35 –8 –54
  8. 8. Load Capability Load conditionsAngleseries
  9. 9. Design range for Taper Roller BearingsSingle row bearing Back-to-back arrangement Face-to-face arrangement Designation suffix DB Designation suffix DFDouble row bearing TDO configuration TDI configurationFour-row bearing TQO configuration TQI configuration
  10. 10. Roller Forces Qe = Outer ring/ roller contact force Qi = Inner ring/ roller contact force Qf = Roller/ flange contact force
  11. 11. Effects of Axial and Radial Loads QR = External radial load QA = Internal induced axial load
  12. 12. Life Performance Calculated life –25 –10 25 Preload Clearance–25 –10 25 Bearing setting Load distribution
  13. 13. Roller End/Flange Contact Sliding Outer ringRoller/flangecontact point Roller Inner ring
  14. 14. Stress Distribution in Raceway Contactstraight circular crowning logarithmic crowning light load heavy load heavy load + misalignment
  15. 15. Application: Commercial Vehicle
  16. 16. Application: Worm Gearbox
  17. 17. Application: Double Reduction Final Drive Unit
  18. 18. Application: Cone Crusher
  19. 19. Application: Work Roll in Cold Strip Rolling Mill
  20. 20. Check Machine Drawings and Fits
  21. 21. Preparation for Efficient Dismounting
  22. 22. Before Fitting Bearings
  23. 23. Matched Set ArrangementFace-to-face Back-to-back Tandemarrangement arrangement arrangementDesignation suffix DF Designation suffix DB Designation suffix DT
  24. 24. Fitting in Wheel Hub: Cold Mounting
  25. 25. Fitting in Wheel Hub: Cone Assembly
  26. 26. Fitting in Wheel Hub: Apply Nut
  27. 27. Fitting in Wheel Hub: Dial Gauge
  28. 28. Fitting on Rotating Shaft: Tight Fit Axial clearance
  29. 29. Fitting on Rotating Shafts: Face-to-Face Shims Cover
  30. 30. Fitting on Rotating Shafts: Back-to-Back Telescopic sleeve Larger Distance sleeve

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