17x30x7mm Ceramic Ball Bearing, 6903 Hybrid Ceramic Bearing- Si3N4 Cart Full Balls Bearing for Bike Hubs Pivot

Specification:
Model: 6903
Sealed Type: Double Sealed
Inner Race/Outer Race Material: Chrome Steel (GCr15)
Cage Material: Stamping Steel
Inner Diameter (d): 17mm
Outer Diameter (D): 30mm
Thickness (B): 7mm
Dynamic Load Rating (Cr): 4.6kN
Static Load Rating (Cor): 2.6kN
Accuracy Class: P6 (ABEC-3)
Noise Level: Z1