Full complement roller bearings for FAG are particularly suitable for applications with ultra-high loads and medium speeds. Unsealed single-row and double-row bearings are mainly used in gearbox mechanisms, while sealed double-row bearings are more suitable for lifting mechanisms. Except for the NJ23VH series, single-row full complement cylindrical roller bearings cannot be separated. Both rings of the separable bearing can be tightly fitted, which facilitates installation and disassembly.
Basic structure of single row full complement cylindrical roller bearings
Single row full complement cylindrical roller bearings can bear large radial loads and can also bear unidirectional axial loads. The axial positioning can be ensured by using a similar bearing with a symmetrical layout. The NCF 29V and NCF 30V series bearings have two fixed ribs on the inner ring and one rib on the outer ring. They can only withstand axial loads toward the fixed ribs on the outer ring. NJ23VH series bearings can withstand the axial load acting toward the inner ring rib. Their rollers are fixed in the outer ring and will not come out even if the inner ring is removed. In this way, when both ferrules are tightly fitted, they are easy to install and disassemble respectively.
Basic types of double row full complement cylindrical roller bearings
In addition to being able to withstand large radial loads and axial loads, double row full complement cylindrical roller bearings can also withstand overturning moments. Therefore, they are often used as fixed bearings. The outer ring of the NNC 49V series bearing has a lubricating oil groove and several lubricating oil holes, which can also be lubricated in the shaft during operation. NNF50B.2LS.V and NNF50C.2LS.V series bearings adopt contact seals at both ends, and the sealing rings are filled with grease. Under good conditions of use, grease can extend the working life of the bearing. Lubrication can be carried out through the lubricating oil grooves and lubricating oil holes on the outer ring of the double row full complement cylindrical roller bearing. If the same bearings are installed on a shaft, the outer ring can rotate at different speeds because the outer ring is narrower than the inner ring. This is somewhat suitable for pulley mechanisms. In order to make the pulley easily fixed to the bearing outer ring, there are annular grooves at both ends of the bearing outer ring that can accommodate elastic retaining rings.
Tolerance
The basic type of Full complement roller bearings for FAG adopts the basic tolerances of radial bearings. If you need other tolerances of the bearings, please contact Yihe after-sales service department.
Full complement roller bearings for FAG clearance
Unsealed single-row and double-row cylindrical roller bearings adopt increased clearance group C3. The radial clearance of sealed double row cylindrical roller bearings in size series 50 is the ordinary group.
FAG full complement cylindrical roller bearing friction and allowable speed
The rollers of a full complement cylindrical roller bearing contact each other and rotate in opposite directions on the contact surface, making it difficult for a lubricating film between the rollers to form. Therefore, the friction of a full complement cylindrical roller bearing is at least twice that of a cylindrical roller bearing with a cage. Due to the heat generated, bearings without cages cannot reach the speed of bearings with cages.
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