"larry g" wrote in message
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"DeepDiver" wrote in message
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Are there any differences between NT40 and CAT40 spindle tapers? I've
also seen reference to 40 National Taper, 40 National Taper with Drive
Flange, and 40 National Taper with "V" Flange. What are the differences
(and why)? Can anyone provide a reference to the actual design specs for
the various National Tapers?

The specs for machine tool tapers are in Machinery's Handbook.
lg

Thanks Larry. I remember looking for the R8 specs in Machinery's Handbook a
few years ago and not finding them. So it didn't occur to me to look for the
NT specs now. My oversight.

- Michael