Need a suitable new BB to mate with Sugino 75s.
Hatta or Sugino? There’s a White Industries (sealed bearing) out there as well? The bike will never see rain/slush/sand/salt.
why not a sugino bb to match the cranks for optimal feng shui?
i think most the njs bikes are fitted with the sugino item, for what its worth.
if you grease it up and fit the plastic seal then rain sand slush means jack…
they will perform as well as any sealed BB
i saw a sugino super lap brand new on evil bay the other week sell for $100 au…
you really can’t beat that.
get the sugino BB match it to the 75 cranks with a cubic chain ring and a gigas cog!!
that would be sick…
that my friend is horseshit… rain/sand/slush will definitely affect a non-sealed BB that is not maintained (checked/repacked) regularly. luckily in (urban) australia we dont see conditions that would make you notice this very quickly. it becomes more obvious after a couple of years though…
try running a non-sealed BB daily in the slushy salty mess that is the US/canadian north east, or the sodden gritty rainfest that is the northwest for a winter or so and see how it compares…
I just pulled apart my BB (sugino 75) after a period of wet perth roads and the dirt / sand that had beaten the seal was negligible.
+1 to 75s with 75 BB.
I used to run an unsealed NJS Sugino BB - after heavy use through a Melbourne winter it was pitted as fuck. Was a lovely BB when working, however.
haha $150 unsealed bottom brackets on street bikes…
Note my OP, I’ll not be putting it on a street bike.
not laughing at you 
happy to stand corrected on this… my comment was more aimed at those whose average commute/ride is <10kms and is through one of the ‘great hipster silk routes’ in each major city. in their case the difference wont be apparent as quickly (but will be apparent).
either way, i agree if your bike is seeing daily all-season use: sealed is smarter.
hahahahahahaha love it
This bottom bracket for your track bike CC?
My understanding was the Hatta BB’s were JIS, while the Sugino 75 BB is obviously ISO. Therefore the Sugino will always be a better fit to Sugino 75 cranks.
I ran some Sugino 75’s on a JIS BB for ages with no drama however- just doesn’t ‘fit’ as well as a proper ISO one.
Phil make a nice ISO Sugino compatible BB don’t they?
Read this: http://www.urbanvelo.org/issue15/urbanvelo15_p86-87.html
Posted by Jolan: here
Good info.
On my Samson I’m running 75’s on a Hatta BB. No problems at all and it’s running quiet as. I didn’t even think when I bought the two. I assumed 75’s were JIS.
I was running ISO Ofmega’s on a sealed Shimano JIS BB on the Malvern Star. It didn’t work at all and gave me horrible chainline and noise. I swapped the BB over to the Ofmega one yesterday and it’s all perfect now.
Yeah for my Llewy.
I was specifically looking at this Hatta. Am I right in thinking that because it is NJS-certified it must be ISO? (NB, I’m really not hung up on the NJS thing, probably evident from my lack of knowledge about it, I just want a nice track BB for my nice track bike that will fit the nice track cranks I already own)
was also looking at this from White Industries
There seems to be a lot of ambiguity whether the Hatta R9400 BB is indeed ISO or JIS. But in the real world it shouldn’t matter since they are ‘NJS’ approved, and they must be compatible with any NJS crank you would think… 
Gabriel who runs one of those NJS seconds blogs told me that all the NJS stuff he sells is ISO. He also commented: Both Sugino and DA are used by the racers on HATTA BB without any problem. True story!
It’d be silly to make an NJS JIS BB, when all NJS cranks are ISO (according to Sheldon), which explains why my Hatta BB and Sugino 75’s fit together so perfectly, seeing both are NJS.
But to make life more confusing, the Dura Ace 7600 NJS cranks are JIS according to my 5-second internet research… 