WOK6300 series is a sprag freewheel,also named CSK6300,one side is sprag type,the other supported ball bearing. WOK6300 series is a sprag type freewheel,also named CSK6300,one side is sprag type,the other supoorted ball bearing,integrated into 63series ball bearings. TypeSizeBearing Bearing loadsWeightFrictionseriesdyn. Stat.Resistance D TKN1)NmaxDL CCoTR Nmmin-1 KNKN NWOK6300..PP15630213.57, ...