... THK,IKO,NACHImain product:shperical roller bearing,cylindrical roller bearing, taper roller bearing,needle bearing,angular contact ball bearing,thrust ball ... 9)product packagingThe main type of taper roller ball bearing:The size of metric single taper roller ball bearing: d 15----- ... bearing (back to back) d 40-----260mmSingle row taper roller bearing (tandem position) d 55-------80mmThe main type ...