Introduction to SL0450 series products: the SL04 series bearings, both single-sealed and double-sealed, is a kind of sealed double row bearing. Such cylindrical roller bearing is guided by an integral inner ring, which will be split after being finalized and be fixed by a clamping ring after being installed. In the meantime, the outer ring of the bearing is equipped with an entitative central flange and 2 annular necks superficially. Therefore, the check ring can easily position the bearing in axial and enable it to withhold double row load. Furthermore, the wider cardinal plane of the bearing is capable of withholding capsizing moment.