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Is this BB iso?

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Old 08-08-11 | 03:25 PM
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Is this BB iso?

I'm looking to order an Italian BB with a 113 spindle length. I found this, but it doesn't specify JIS or ISO. Anyone know?

https://www.sheldonbrown.com/harris/b...s.html#italian

(It's the Shimano BB-UN54 square tapered Italian 70mm width 36mm x 24 TPI for $24.95)

Thanks guys.
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Old 08-08-11 | 03:30 PM
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Pretty sure its JIS. I think all new Shimano BB's are JIS.
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Old 08-08-11 | 03:35 PM
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Originally Posted by Zaphod Beeblebrox
Pretty sure its JIS. I think all new Shimano BB's are JIS.
That's what I would have assumed, except the 2 above it (same model, different threads) are shown as ISO... so I'm a little confused. All the VO italian BB's are also JIS. Argh.
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Old 08-08-11 | 03:41 PM
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Look again, the two above it are ISO/English Threading

If you look at the description for the other two it mentions the Spindle Taper is JIS.
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Old 08-08-11 | 03:44 PM
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Originally Posted by Zaphod Beeblebrox
Look again, the two above it are ISO/English Threading

If you look at the description for the other two it mentions the Spindle Taper is JIS.
Ohhh. I'm blind. Thanks.
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Old 08-08-11 | 03:44 PM
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the IRD BBs like this one

New! IRD Quad QB-55 68mm Bottom Bracket Sets $29.95 <H3></H3>
Made in Japan by Tange
CroMoly J.I.S. square taper hollow spindle
BB Shell Width: 68 mm
Available spindle lengths: 107, 110, 113, 115, 118, 122.5 & 127.5mm
Steel Cups
BB Thread Type: ISO/English
With two steel cups, this is an excellent upgrade to the Shimano BB-UN54.

are the only ones I see close the UN54 with ISO mentioned but are they really talking about the taper? I would check IRDs website.

I would be suprised it shimano ever made ISO BBs since they would have intended for their BBs to used on their own cranks.
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Old 08-08-11 | 03:48 PM
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Yeah, that IRD one says JIS spindle...

Does anyone know who makes an Italian threaded BB with an ISO spindle that won't make me empty my bank account?
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Old 08-08-11 | 03:52 PM
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There's this, but the spindle is a little long. The recommended size for my crank is 113. Is it a huge thing to go to 115?

https://www.niagaracycle.com/product_...ucts_id=402420
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Old 08-08-11 | 04:37 PM
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115 V 113 is only a difference of 1mm on each side. I just bought a Miche for a Stronglight I sould not find a ISO BB for. haven't installed it but it looks nice.
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Old 08-08-11 | 04:40 PM
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Maybe I'll try it. I sure as hell can't seem to find much else.

There's also this Campy one... https://www.niagaracycle.com/product_...ucts_id=402533

Does the fact that the Miche BB is listed as a track model make any real difference?
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Old 08-08-11 | 05:58 PM
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I bought the Campy one. I'm spending way too much money these days.
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Old 08-08-11 | 06:46 PM
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Just an FYI, now that it's too late - Miche makes ISO BBs, especially Italian
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Old 08-08-11 | 08:36 PM
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Originally Posted by Ex Pres
Just an FYI, now that it's too late - Miche makes ISO BBs, especially Italian
Yeah, I could only find one on short notice and it was the same size as the campy, so, I just went for it.
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