R.J.
Senior Heliman
Location: SF bay area, CA USA
| Does it need to be a precision fit for a ball bearing or just a size between 3mm and 4mm? If it doesn't need to fit a ball bearing, you can use a drill rod, drill blanks or reamer blanks in decimal inch sizes (drill sizes)and also metric drill blanks for example at:http://www.drillblanks.com/metric_sizes.html (haven't used company before, just did Google search).
Drill blank will be a few ten thousanths oversize, a reamer blank a few ten thousanths undersize. You would want a reamer blank if it needs to fit inside a ball bearing. Hope this may help.
Regards,
Rick |
A 3.5mm shaft would however be easy to fit and would likely give the extra stiffnes I need. Problem is that it seems impossible to find shaft material of that dimension. I was hoping that anyone here could give me some tip where I can get such material.
