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FLT NJ 312 +HJ 315 bearing

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FLT NJ 312 +HJ 315 Bearing Details:
Bearing NameNJ 312 +HJ 315
New ModelN421
Old Model2421 bearing
product ModelN421
CategoryCylindrical Roller Bearings
BrandFLT Bearing
Inner Diameter d ( mm ) 105
Outer Diameter D ( mm )260
Thickness B ( mm )60
FLT NJ 312 +HJ 315 Bearing   Bearing Size and Drawing:
NJ 312 +HJ 315
FLT NJ 312 +HJ 315 Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
MAC NU421 Bearing10526060MACCylindrical Roller Bearings
KOYO NJ421 Bearing10526060KOYOCylindrical Roller Bearings
KOYO NJ421+HJ421 Bearing10526060KOYOCylindrical Roller Bearings
TBS NJ 421 Bearing10526060TBSCylindrical Roller Bearings
NSK NJ421+HJ421 Bearing10526060NSKCylindrical Roller Bearings
NACHI NJ 2319 +HJ 2321 Bearing10526060NACHICylindrical Roller Bearings
FAG NU421 Bearing10526060FAGCylindrical Roller Bearings
NACHI NU 421 Bearing10526060NACHICylindrical Roller Bearings
NSK NJ421 Bearing10526060NSKCylindrical Roller Bearings
FAG NUP 421 Bearing10526060FAGCylindrical Roller Bearings

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What are the structural components and design advantages of cylindrical roller bearings?
 
Cylindrical roller bearings consist of an inner ring, an outer ring, cylindrical rollers, and a cage (some models have full complement rollers or no inner or outer rings). The rollers and raceways are designed for line contact, offering advantages such as extremely high radial load capacity, good rigidity, low coefficient of friction, high limiting speed, and the ability to allow a certain degree of axial displacement of the shaft relative to the housing bore.
 
What are the advantages of cylindrical roller bearings compared to other similar bearings?
 
Compared to deep groove ball bearings, cylindrical roller bearings have significantly higher radial load capacity, making them more suitable for heavy-duty applications. Compared to tapered roller bearings, they have higher limiting speeds, lower frictional heat generation, and simplify system design when not subjected to axial loads. Compared to needle roller bearings, they offer superior rigidity and shock resistance, making them suitable for applications requiring higher stability.
 
What are the applicable occasions and typical applications of cylindrical roller bearings?
 
These bearings are suitable for heavy-duty, high-speed machinery requiring rigid support. Typical applications include large motors, machine tool spindles, gearboxes, rolling mills, industrial pumps, papermaking machinery, and mining crushing equipment.

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