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Max. Axial Clearance and Interference between retained part and ring

Max. Axial Clearance and Interference between retained part and ring

Max. Axial Clearance and Interference between retained part and ring

(OP)
Hello

I am assessing a design of a small gear box for manufacturing. I noticed that if I follow the dimensions to the print for the shaft groove location lengths and the gear face width ( gear to be press fitted on shaft) then I end up with 0.010 Max. Intrerference to 0.020 max. clearance  between the retaining ring and the gear face. I have considered the stack up of tolerance due to tolerances of ring width, groove locational tolerance and gear width tolerance.

If I reduce the gear width tolerance to 0.005" instaed of the present 0.020" then the Max. Interefernce 0.005" and Max. claearnce of 0.012" would result.

My question is for a press fitted gear with bearing supports at both ends of the shaft  , what are desirable limits of max. interference and max. cleaance?

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