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| Motor Technology - Bore and shaft tolerances | ||
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Below is a reference on bore and shaft tolerances corresponding to a given bore or shaft diameter:
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Bore Tolerances |
Shaft Tolerances |
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Clearance Fit |
Transition Fit |
Interference Fit |
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Diameter range |
H7 |
H8 |
f7 |
g6 |
k6 |
n6 |
p6 |
s6 |
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Ø in mm |
low |
high |
low |
high |
high |
low |
high |
low |
high |
low |
high |
low |
high |
low |
high |
Low |
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over 0 to 3 |
0 |
+0.010 |
0 |
+0.014 |
-0.005 |
-0.016 |
-0.002 |
-0.008 |
+0.006 |
0 |
+0.010 |
+0.004 |
+0.012 |
+0.006 |
+0.020 |
+0.014 |
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over 3 to 6 |
0 |
+0.012 |
0 |
+0.019 |
-0.010 |
-0.022 |
-0.004 |
-0.012 |
+0.009 |
+0.001 |
+0.016 |
+0.008 |
+0.020 |
+0.012 |
+0.027 |
+0.019 |
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over 6 to 10 |
0 |
+0.015 |
0 |
+0.022 |
-0.013 |
-0.028 |
-0.005 |
-0.014 |
+0.010 |
+0.001 |
+0.019 |
+0.010 |
+0.024 |
+0.015 |
+0.032 |
+0.023 |
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over 10 to 18 |
0 |
+0.018 |
0 |
+0.027 |
-0.016 |
-0.034 |
-0.006 |
-0.017 |
+0.012 |
+0.001 |
+0.023 |
+0.012 |
+0.029 |
+0.018 |
+0.039 |
+0.028 |
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over 18 to 30 |
0 |
+0.021 |
0 |
+0.033 |
-0.020 |
-0.041 |
-0.007 |
-0.020 |
+0.015 |
+0.002 |
+0.028 |
+0.015 |
+0.035 |
+0.022 |
+0.048 |
+0.035 |
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over 30 to 50 |
0 |
+0.025 |
0 |
+0.039 |
-0.025 |
-0.050 |
-0.009 |
-0.025 |
+0.018 |
+0.002 |
+0.033 |
+0.017 |
+0.042 |
+0.026 |
+0.059 |
+0.043 |
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over 50 to 80 |
0 |
+0.030 |
0 |
+0.046 |
-0.030 |
-0.060 |
-0.010 |
-0.029 |
+0.021 |
+0.002 |
+0.039 |
+0.020 |
+0.051 |
+0.032 |
+0.072 |
+0.053 |
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over 80 to 120 |
0 |
+0.035 |
0 |
+0.054 |
-0.036 |
-0.071 |
-0.012 |
-0.034 |
+0.025 |
+0.003 |
+0.045 |
+0.023 |
+0.059 |
+0.037 |
+0.093 |
+0.071 |
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Note
Motor Technology will not accept any liability for the accuracy of the data supplied. This information is meant as a guideline only.