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Lathe Spindle Tapers


jdrichard

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Bit confused about this question.

Peerless, G Boley and Boley & Leinen lathes are WW lathes and the spindle has a pair of opposing tapered journal bearings, but I assume you aren’t talking about that as they are match ground to the headstock. The only other taper is on the chuck seat in the spindle.

The collet chucks of all WW lathes should have a 40degree included angle. If however you want to work out your best chances of interchangeability between WW manufacturers then this table should help

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Are you looking to find a Jacobs chuck to fit the tailstock or headstock?

If the former, then these guys will sell you a Jacobs chuck with a taper fit onto a 7.5mm ground shaft which will fit your Reform lathe for about £35 https://pennyfarthingtools.co.uk/. They don’t list it on the website, but I bought one from them at a watch and clock fair.

If the latter then I think you can plug these two together

https://www.rdgtools.co.uk/acatalog/8MM-SCREWED-ARBOUR-12MM-X-1-PITCH-3745302W.html

https://www.rdgtools.co.uk/acatalog/KEYLESS-DRILL-CHUCK-0.5---8MM-CAPACITY-B12-83943.html

I’m pretty sure these arbours have a 40tpi thread so should be good for your reform lathe, but the seller will no doubt confirm. They also list other chuck options

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