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AST 21309MB spherical roller bearingsTechnology

db - Cone Backface Backing Diameter: 88 mm a - Effective Center Location4: -7.4 mm da - Cone Frontface Backing Diameter: 83 mm
G2 - Heat Generation Factor (Rib-Roller End): 26.3 C90 - Dynamic Radial Rating (90 million revolutions)5: 53000 N Cage Type: Stamped Steel
C1 - Dynamic Radial Rating (1 million revolutions)6: 205000 N G1 - Heat Generation Factor (Roller-Raceway): 110.7 Aa - Cage-Cone Backface Clearance: 2.3 mm
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2: 20800 lbf

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