Boxford change wheel – bore size?

[Keith LongParticipant @keithlong89920]

[Keith LongParticipant @keithlong89920]

Hi

Can anyone please advise me what the bore size is on change wheels for the Boxford lathes? I know they are 18dp and I assume 14.5deg.pa, but I can't find the hole size anywhere.

Thank you

Keith

[SaxalbyParticipant @saxalby]

Hi Keith,

Just measured mine and the gear bore is 9/16 inch.

[Keith LongParticipant @keithlong89920]

Many thanks for that – as far as I'm concerned that's the perfect size – means I can fit them to my lathe which is something totally different!

Keith

[RobboParticipant @robbo]

Keith, you are also correct to assume a pa of 14.5 degrees for the changewheels, though some fixed gearing in later models was changed to 20 deg.

[Keith LongParticipant @keithlong89920]

Thank you for confirming the pa, that really is one of the specifications that's difficult to check – especially by just a visual inspection.

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