System Tolerancing

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Shaft Tolerancing

Housing Tolerancing

Nominal diameter tolerance[μm]
Cylindricityt1
Axial runoutt2
Concentricityt3
Mean surface roughnessRa
Nominal diameter tolerance –
Fixed bearing OD
[μm]
Nominal diameter tolerance –
Floating bearing OD
Cylindricityt1
Axial runoutt2
Concentricityt3
Mean surface roughnessRa
Recommended Shaft Tolerance Correction for RPM
utilizing n · dm factor*
Bearing bore diameter [mm]Correction Factor [μm]Corrected Nominal diameter tolerance
   

*There are many factors that go into proper tolerancing; bearing size, RPM, temperature, materials, duty cycle, etc. All can play a role in proper tolerancing. This page is designed to be a guide for general applications. If specific questions arise, please contact GMN Bearing USA Ltd. engineers for further support.


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