BAA1131 Bearing Specification:
BAA1131 bearing is headset bearing for bicycle.
For this bearing,
Inner Diameter (d): 30mm
Outer Diameter (D): 41.8mm
Width (B): 6.5mm
Contact Angle: 36º/45º
Weight: 0.04kg
Seal Type: rubber seal on 2 sides
Material: chrome steel with galvanization
Bearing Photo:
![BA-A1131 bearing](http://groove-ballbearing.com/wp-content/uploads/2021/09/BA-A1131-bearing-1.jpg)
BA-A1131 bearing