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The full complement cylindrical roller bearing without outer ring consists of an inner ring and cylindrical rollers, and the inner ring has two fixed ribs. This type of bearing has a more rolling elements, so it has extremely high radial bearing capacity and high rigidity, and is suitable for particularly compact structural design. However, limited by kinematic conditions, this kind of bearing cannot reach the limit speed of cylindrical roller bearing with cages. This type of bearing can not only bear high radial force, but also bear certain bidirectional axial force, and can position the shaft in both axial directions. The bearing without seals is not pre-lubricated and can be lubricated with oil or grease. The rolling rollers are protected by a plastic sleeve to prevent damage and loss during transportation.

Single-row full complement cylindrical roller bearing consists of inner ring, outer ring and cylindrical rollers. Because as many rolling elements as possible are placed, the bearing has extremely high radial bearing capacity and rigidity, and is particularly suitable for compact structural design. However, limited by kinematic conditions, this kind of bearing cannot reach the limit speed of cylindrical roller bearing with cages. Single-row full complement cylindrical roller bearings are semi-positioning bearings.