... .main product:shperical roller bearing,cylindrical roller bearing, taper roller bearing,needle bearing,angular contact ball bearing,thrust ball bearing,thrust roller bearing.7.material: stainless steel,bearing steel, carbon steel ... 200mmSingle row taper roller bearing (face to face ) d 25--------320 mmSingle row taper roller bearing (back to back) d 40-----260mmSingle row taper roller bearing (tandem ...