Originally Posted by
WizardOfBoz
Are you sure you bought deep groove ball bearings? Deep groove and angular contact bearings both work for bottom brackets, but the angular contact bearings can be installed wrong (backward). In which case, they won't work.
Radial deep groove, this one:
https://www.bikeshop.es/rodamiento-e...mm/150950.html
Translated:
https://translate.google.com/transla...%2F150950.html
FEATURES
Dimensions : 15 x 28 x 7 mm
Balls / needles material : Steel
Ring material : Steel
Type of joints : LLB
Type of bearing : Radial contact ball
Use : Wheels, Frame
TECHNICAL CHARACTERISTICS
- Reference: 6902-2RS-LLB.
- Grade 10 chromed steel balls.
- Standard Abec 3.
- Rings and steel cage.
- 2 joints (2RS) with double lip and minimum contact (LLB).
- Grease with high Teflon content (Rhéolube 7703).
- Weight (manufacturer): 15.7 g.