S.E.M. 31
Main Photo
Category:  Bottom Brackets
Name:  S.E.M. 31
Brand:  S.E.M.
Model:  31
Years:  1931
Country:  Italy
Added By: Munny on 05/05/12
Updated By: Munny on 05/05/12
Additional Photos - click for full size
S.E.M. 31
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Bearing Size/Count per sideSpindle Markings
Fixed Cup MarkingsSEM 31Adjustable Cup MarkingsSEM 31
Spindle StyleCotteredAxle MaterialSteel
Available ThreadingsItalian: 36mm x 24Length(s)
Tools Needed  
General Information
Not yet chromed but Nickeled, this came from a Prewar Italian bicycle
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Additional Resources
Resources:Reference & Charts
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