四列圆柱滚子轴承（轧机轴承）
规格与参数
Bearing NO.
New :FC6890250A
Old :
Boundary dimensions(mm)
d :340
D :450
B :250
Fw :368
r 1.2min :4
r 3.4min :4
Basic load ratings(kN)
Cr :2580
Cor :6410
Cutline :2
Weight (kg)
Refer :111
Refer foreign model
SKF :
FAG :
NSK :340RV4502
NTN :
KOYO :68FC45250BW
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