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NTN NN 3021 K bearing

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NTN NN 3021 K Bearing Details:
Bearing NameNN 3021 K
New ModelNN3021K
Old Model3182121 bearing
product ModelNN3021K
CategoryCylindrical Roller Bearings
BrandNTN Bearing
Inner Diameter d ( mm ) 105
Outer Diameter D ( mm )160
Thickness B ( mm )41
NTN NN 3021 K Bearing   Bearing Size and Drawing:
NN 3021 K
NTN NN 3021 K Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
KOYO NN 3021 Bearing10516041KOYOCylindrical Roller Bearings
FAG NN3021K/W33 Bearing10516041FAGCylindrical Roller Bearings
NSK NN 3021 K Bearing10516041NSKCylindrical Roller Bearings
NACHI NN3021K Bearing10516041NACHICylindrical Roller Bearings
KOYO NN3021K Bearing10516041KOYOCylindrical Roller Bearings
NTN NN3021 Bearing10516041NTNCylindrical Roller Bearings
NACHI NN 3021 Bearing10516041NACHICylindrical Roller Bearings
NSK NN3021K Bearing10516041NSKCylindrical Roller Bearings
FAG NN3021K/W33 Bearing10516041FAGCylindrical Roller Bearings
NTN NN 3021 Bearing10516041NTNCylindrical 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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