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140 mm x 190 mm x 50 mm KOYO NNU4928K cylindrical roller bearingsCross reference

C90 - Dynamic Radial Rating (90 million revolutions)5: 2570 lbf da - Cone Frontface Backing Diameter: 1.08 in Ab - Cage-Cone Frontface Clearance: 0.07 in
Aa - Cage-Cone Backface Clearance: -0.01 in db - Cone Backface Backing Diameter: 1.16 in Cg - Geometry Factor: 0.0479
C0 - Static Radial Rating: 9780 lbf B - Cone Width: 0.7200 in G2 - Heat Generation Factor (Rib-Roller End): 5.6
d: 0.8437 in Size (mm): 140 mm x 190 mm x 50 mm

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Shandong Jiangshan Industrial Development Co., Ltd.
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