Plus - as with the French HBX-360-BC you sold me - any lathe that uses separate extensions can readily support swapping for other extension options without disturbing the spindle, proper.
I'd rate that approach as "a feature, not a bug", and one that adds value.
Well "not only". All of my collet systems are nose-actuated in one way or another. I don't think I've even seen a manual rear-closer fitted to a Cazeneuve. Powered is another story.
But many of the "modern" squared-off lathes - the HBX-360 among them as well as the Graziano and this particular family of Schaublin - need an extension tube simply so one can find the spindle bore to feed a rod or bar of stock into without having to take the end cover(s) off. The extension also limits whip, protecting other goodies in the area, though a supplementary support may still be needed when stock is long.
The "working" spindle itself otherwise ends somewhere deep inside.
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