NSK 1211 bearing

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NSK 1211 Bearing Details:
Bearing Name1211
New Model1211
Old Model1211 bearing
product Model1211
CategorySelf-aligning Ball Bearings
BrandNSK Bearing
Inner Diameter d ( mm ) 55
Outer Diameter D ( mm )100
Thickness B ( mm )21
NSK 1211 Bearing   Bearing Size and Drawing:
1211
NSK 1211 Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
TBS 6211-RS Bearing5510021TBSDeep Groove Ball Bearings
NSK 6211-RZ Bearing5510021NSKDeep Groove Ball Bearings
TBS 7211 BEY Bearing5510021TBSAngular Contact Ball Bearings
KOYO NU211E Bearing5510021KOYOCylindrical Roller Bearings
TBS NU211ECML* Bearing5510021TBSCylindrical Roller Bearings
NSK 7211 B Bearing5510021NSKAngular Contact Ball Bearings
FAG QJ211 Bearing5510021FAGAngular Contact Ball Bearings
NTN QJ 211 Bearing5510021NTNAngular Contact Ball Bearings
FAG NUP211E Bearing5510021FAGCylindrical Roller Bearings
NSK NJ 211 E Bearing5510021NSKCylindrical Roller Bearings

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What are the structural components and design advantages of self-aligning ball bearings?
 
Self-aligning ball bearings consist of an inner ring, an outer ring, two rows of steel balls, and a cage. The outer ring raceway is spherical, and the inner ring has a double-raceway design, providing excellent self-aligning performance. This effectively compensates for alignment errors between the shaft and the housing bore, as well as shaft deflection. They also have low friction and a high limiting speed, making them suitable for applications with installation misalignment or shaft deformation.
 
What are the advantages of self-aligning ball bearings compared to other similar bearings?
 
Compared to deep groove ball bearings, self-aligning ball bearings have self-aligning capabilities, accommodating greater alignment errors and shaft deflection. Compared to spherical roller bearings, they have a higher limiting speed and lower friction, but a lower load capacity, making them more suitable for medium to light load conditions. Compared to cylindrical roller bearings, they can withstand certain axial loads, and their self-aligning performance reduces the requirements for installation precision.
 
What are the applicable occasions and typical applications of self-aligning ball bearings?
 
These bearings are suitable for medium to light load applications where alignment precision requirements are not high and deflection or impact is present. Typical applications include textile machinery, agricultural equipment, conveyor rollers, small fans, crushers, vibrating screens, and woodworking machinery.

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