Yes I mentioned the 112 above 68-2-112, but that was cup and cone and the axle layout is a bit different.
they're the lightest UN made, about 255g claimed (above in the picture) but I'm sure my 107's where under the claimed weight. (220g ring a bell, and you've about 4 or 5 grams more on the 115.
not the lightes tby any means but for a bottom bracket that's last longer than anything, you can't complain.
My UN90 107 boughtin 1992 gave up (well a very slight bit of play) in ~2010. and tha was hard mtb for the begining of it life, storage when I wasn't rifing for some years and commuting again and mtb riding again....