Detailed description
Rolling mill bearing -- four-row cylindrical roller bearing FC5678275A, equivalent to 280RV3903
Boundary dimensions(mm)
Basic load ratings (kN)
Speed rating
Designation
(rpm)
d
D
B
Fw
rmin
Cr
Cor
Grease
Oil
280
390
275
308
3
2860
6450
1000
1300
FC5678275A
Quality advantages:
1. good quality bearing steel;
2. advanced heat treatment technique to enable high and even hardness and toughness;
3. high temperature back-fire to stabilize the bearing size;
4. P6 precision grade;
5. 100% detection for flaw before delivery.









