Small spindle head

[BillTodd]

And whilst I am planning to loctite rear bearing, I don't think I will need it for the front one.

The rear bearing should float (or at least not be too tight) to avoid stress from thermal expansion differences between spindle and casing.

BTW interesting article on Bob Warfield's site about using standard deep groove bearing in a spindle:(scroll down a bit)
http://www.cnccookbook.com/CCMillBeltDrive.html

[edit]

And this is from a bearing expert:
[ame="http://www.practicalmachinist.com/vb/showpost.php?p=1065036&postcount=4"]Practical Machinist - Largest Manufacturing Technology Forum on the Web - View Single Post - Tapered roller vs angular contact ball bearings[/ame]

[ame="http://www.practicalmachinist.com/vb/showpost.php?p=1065158&postcount=10"]Practical Machinist - Largest Manufacturing Technology Forum on the Web - View Single Post - Tapered roller vs angular contact ball bearings[/ame]