Contenu connexe
Similaire à Taper Roller Bearings (17)
Taper Roller Bearings
- 6. Shaft Tolerances
Shaft Shaft diameter tolerances
diameter
(Nominal g6 h6 j6 k6 m6 n6 p6
bearing bore
diameter) Adjusted values for bearing with inch dimensions
over incl. high low high low high low high low high low high low high low
mm µm
10 18 +4 –7 +10 –1 +18 +7 +22 +11 +28 +17 +33 +22 +39 +28
18 30 +4 –9 +11 –2 +20 +7 +26 +13 +32 +19 +39 +26 +46 +33
30 50 +3 –13 +12 –4 +23 +7 +30 +14 +37 +21 +45 +29 +54 +38
50 76,2 +4 –15 +14 –5 +26 +7 +35 +16 +44 +25 +53 +34 +65 +46
76,2 80 +10 –9 +20 +1 +32 +13 +41 +22 +50 +31 +59 +40 +71 +52
80 120 +11 –11 +23 +1 +36 +14 +48 +26 +58 +36 +68 +46 +82 +60
120 180 +11 –14 +25 0 +39 +14 +53 +28 +65 +40 +77 +52 +93 +68
180 250 +15 –14 +30 +1 +46 +17 +63 +34 +76 +47 +90 +61 +109 +80
- 7. Housing Tolerances
Housing Housing bore tolerances
bore
diameter
(Nominal H7 J7 J6 K6 K7 M6 M7 N7 P7
bearing out-
side diameter) Adjusted values for bearing with inch dimensions
over incl. high low high low high low high low high low high low high low high low high low
mm µm
24 30 +37 +16 +28 +7 +24 +11 +18 +5 +22 +1 +12 –1 +16 –5 +9 –12 +2 –19
30 50 +42 +17 +31 +6 +27 +11 +20 +4 +24 –1 +13 –3 +17 –8 +9 –16 0 –25
50 80 +48 +18 +36 +6 +31 +12 +22 +3 +27 –3 +13 –6 +18 –12 +9 –21 –3 –33
80 120 +56 +21 +43 +8 +37 +15 +25 +3 +31 –4 +15 –7 +21 –14 +11 –24 –3 –38
120 150 +62 +22 +48 +8 +40 +15 +26 +1 +34 –6 +14 –11 +22 –8 +10 –30 –6 –46
150 180 +65 +25 +51 +11 +43 +18 +29 +4 +37 –3 +17 –8 +25 –15 +13 –27 –3 –43
180 250 +71 +25 +55 +9 +47 +18 +30 +1 +38 –8 +17 –12 +25 –21 +11 –35 –8 –54
- 9. Design range for Taper Roller Bearings
Single row bearing
Back-to-back arrangement Face-to-face arrangement
Designation suffix DB Designation suffix DF
Double row bearing
TDO configuration TDI configuration
Four-row bearing
TQO configuration TQI configuration
- 10. Roller Forces
Qe = Outer ring/
roller contact force
Qi = Inner ring/
roller contact force
Qf = Roller/
flange contact force
- 11. Effects of Axial and Radial Loads
QR = External radial load
QA = Internal induced axial load
- 14. Stress Distribution in Raceway Contact
straight circular crowning logarithmic crowning
light load
heavy load
heavy load
+
misalignment