QJ228 four-point contact ball bearing 140x250x42mm(also called rolling mill bearing, same to QJ228N2, QJ228N2MPA) is used in rolling mills for the production of hot-rolled and cold-rolled steel products. For more information about QJ228 four-point contact ball bearing 140x250x42mm, contact us!
Boundary dimensions(mm)
Basic load rating (kN)
Speed rating
Designation
(rpm)
d
D
B
rmin
Cr
Cor
Grease
Oil
140
250
42
3
293
396
1600
2200
QJ228













