Does anybody recognise these change gears?

Does anybody recognise these change gears?

This topic has 8 replies, 6 voices, and was last updated 3 March 2026 at 10:15 by DC31k.

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1 March 2026 at 16:12 #839803
southernchap
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@southernchap
These were in a lot I picked up at an auction for a largish engineering firm. There were three of each size, but I just don’t know what they come from. They could be from a lathe, or I guess, from a mill’s power feed.

Any help most appreciated. 😉😊
Advert

2 March 2026 at 15:33 #839941
cedric 1
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@cedric
Seems unlikely to be change gears with the splined boss in the middle. Maybe out of a QC gearbox?
2 March 2026 at 15:40 #839943
Chris Gunn
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@chrisgunn36534
My Bantam has splined change gears, but these are not for a Bantam.

Chris Gunn
2 March 2026 at 17:23 #839949
Tony Pratt 1
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@tonypratt1
From a Cincinnati dividing head gearbox or similar.

Tony
2 March 2026 at 19:56 #839984
Bazyle
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@bazyle
DP? – would give an idea of size of machine. Tooth counts? – dividing head sets have some characteristic numbers.
2 March 2026 at 22:37 #840013
southernchap
Participant
@southernchap
Shame if they’re not change gears. Colchester and Harrison change gears fetch a bit of a decent price on eBay. 😄

They have poorly stamped markings on them, 175/76, 175/56, and 175/44 IIRC.

I suspect these might end up at the recycling centre. 😳
3 March 2026 at 07:41 #840035
DC31k
Participant
@dc31k
As above, measure the OD of the gears and report it. That would enable us to determine their specification and thus what they could potentially fit.

With the boss removed and an alternative centre detail made, they have the potential to become change gears to the right person.
3 March 2026 at 09:31 #840059
southernchap
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@southernchap
3 March 2026 at 10:15 #840062
DC31k
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@dc31k
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