I want to make a high speed, light duty milling spindle and am not sure what the best way to set up angular contact bearings is.
Here are two sketches, the top sketch is how my dumore internal grinding spindle - just a reference. the inner races are a light interference fit on the spindle and the spacer is between the inner races
The bottom is how i'm thinking of making it - main difference is the spacer is between the out races.
Both use a threaded endcap into the housing ot load the bearings. The reason for the change is the bottom allows for a bigger dia end to the spindle.
Is this an ok way to arrange a spindle/angular bearings?
Also, any ideas on taking care of thermal expansion??. I know grinding spindles use springs, but don't think that will work as this is milling spindle and could use helical cutters - ie i don't want it moving along its axis.
Thanks very much
[This message has been edited by Mcgyver (edited 09-24-2005).]