Full complement cylindrical roller bearings

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  Single-row full complement cylindrical roller bearings
• 
  Double-row full complement cylindrical roller bearings

(4) Full complement cylindrical roller bearing
Because the ring raceways are full of rollers and having no cage, the full complement cylindrical roller bearings have higher bearing capacity. At the same time, because this type of bearing has no cage to guide and separate the roller, there will be relative slippage between the rollers. So, compared with the ordinary cylindrical roller bearings, their using speed is lower and noise is lager. The main structures are: single row (NCF type) and double row (NNCF) bearings.
NCF type
♦NCF - it is single row roller bearing, can carry unidirectional axial load, and can be used as unidirectional positioning bearing;
NNCF type
♦ NNCF - it is double row roller bearing, can carry unidirectional axial load, can be used as unidirectional positioning bearing, and is suitable for the low speed and heavy load conditions.
♦ Closed double row full complement cylindrical roller bearings are mainly used for wire rope pulley of crane.