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
Developed scope: below 100 series,100 series,200 series,300 series,400 series,600 series,800 series,1200 series