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KOYO NU221 bearing

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KOYO NU221 Bearing Details:
Bearing NameNU221
New ModelNU221
Old Model32221 bearing
product ModelNU221
CategoryCylindrical Roller Bearings
BrandKOYO Bearing
Inner Diameter d ( mm ) 105
Outer Diameter D ( mm )190
Thickness B ( mm )36
KOYO NU221 Bearing   Bearing Size and Drawing:
NU221
KOYO NU221 Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
KOYO 6221N Bearing10519036KOYODeep Groove Ball Bearings
FAG 6221 Bearing10519036FAGDeep Groove Ball Bearings
TBS 6221-RS Bearing10519036TBSDeep Groove Ball Bearings
KOYO 6221-2RS Bearing10519036KOYODeep Groove Ball Bearings
MRC N221 Bearing10519036MRCCylindrical Roller Bearings
KOYO 6221 2RS Bearing10519036KOYODeep Groove Ball Bearings
FAG NJ 315 +HJ 317 Bearing10519036FAGCylindrical Roller Bearings
MRC NF221 Bearing10519036MRCCylindrical Roller Bearings
RHP 7221 AC Bearing10519036RHPAngular Contact Ball Bearings
NSK NJ 2312 +HJ 2314 Bearing10519036NSKCylindrical 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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