1.5″ x 12tpi Mandrel?

1.5″ x 12tpi Mandrel?

This topic has 3 replies, 3 voices, and was last updated 13 November 2023 at 14:18 by Andrew Tinsley.

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12 November 2023 at 15:40 #689962
Andrew Tinsley
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@andrewtinsley63637
I have a chuck with a 1.5″ x 12tpi backplate. Just curious to know what ;athes have this size mandrel thread?

Andrew.
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13 November 2023 at 13:36 #690198
mike robinson 2
Participant
@mikerobinson2
I think it could be from a Boxford, although which model I dont know, maybe AUD ? Others will give you the definitive info.
13 November 2023 at 14:07 #690206
Bazyle
Participant
@bazyle
All (older) models of the Boxford are the same but are Whitworth while the mostly similar looking SouthBend are UNC. So a Boxford one screws into a SB nose but not visa versa.
13 November 2023 at 14:18 #690207
Andrew Tinsley
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@andrewtinsley63637
Hello Mike,

The Boxford mandrel thread is certainly 1.5″ diameter, but is 8 tpi not the 12 tpi on the chuck backplate of this chuck.

Thanks,

Andrew.
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