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Old 11-18-2019, 08:06 AM   #1 (permalink)
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Default Name that part in...

one, two, three

113918109314

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Old 11-18-2019, 08:16 AM   #2 (permalink)
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Seiko 6119C center wheel - 92406
?
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Old 11-18-2019, 08:18 AM   #3 (permalink)
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The internet tells me it's a centre wheel.
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Old 11-18-2019, 08:24 AM   #4 (permalink)
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All the relevant parts pdf's are wrong then,

https://www.thewatchsite.com/14-user...r-manuals.html

when they term it a Sweep Seconds wheel.

Plus the Center Wheel has a Centre Wheel Bridge.

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Old 11-18-2019, 08:47 AM   #5 (permalink)
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Rolex calls it second wheel. ETA (and most ebauches) call it Sweep second fourth wheel. Watchmakers who dont know exact part names call it center wheel (because its in the center).

Center wheel is the one right after the barrel. Rolex calls it great wheel. Watchmakers who dont know proper name calls it Second wheel (because first wheel is the barrel, so this is the second, and so forth).


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Old 11-18-2019, 09:24 AM   #6 (permalink)
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Thanks Acidstain.



I do find the part names given by Seiko are like they went through a bad translator at times.
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Old 11-18-2019, 11:33 AM   #7 (permalink)
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ETA parts lists also give the name sweep seconds wheel! (crap screenshot) from here https://www.watchmaterial.com/eta-23...heel-original/
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Old 11-18-2019, 11:51 AM   #8 (permalink)
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Default Name that part in...

#220 = Fourth wheel (no second hand)

#224 = fourth wheel w/ second hand (offset, usually at 6 o clock)

#227 = s/s fourth wheel (with sweep second hand, in the center)


Also

#201 = center wheel

#203 = offset center wheel

#206 = s/s center wheel

I am less familiar with what makes a center wheel offset, as it seems they are often not in the middle so naturally offset? But offset center wheels also come with a tiny canon pinion that is separate from the usual canon pinion(where you install the minute hand). 206 is when the center wheel is actually in the middle and needs to have a hole in the center for the s/s pinion (275) to go through. Naturally this set up uses 220.

Last edited by Acidstain; 11-18-2019 at 11:57 AM.
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