Roller shell material：50Mn/45#/40Mn2
Surface Hardness: HRC48-58
Quench depth: >7mm
Roller shaft material：45#
Surface Hardness：HRC48-58
Quench depth：>2mm
Roller collar material：QT450-10
O-ring material：Nitrile rubber
Floating oil seal material：（15Cr3Mo）
Post time: Dec-07-2022
