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NSK 71911 AC bearing

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NSK 71911 AC Bearing Details:
Bearing Name71911 AC
New Model71911AC
Old Model1046911 bearing
product Model71911AC
CategoryAngular Contact Ball Bearings
BrandNSK Bearing
Inner Diameter d ( mm ) 55
Outer Diameter D ( mm )80
Thickness B ( mm )13
NSK 71911 AC Bearing   Bearing Size and Drawing:
71911 AC
NSK 71911 AC Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
TORRINGTON 71911 AC Bearing558013TORRINGTONAngular Contact Ball Bearings
KOYO 61911-RS Bearing558013KOYODeep Groove Ball Bearings
NTN 61911-ZN Bearing558013NTNDeep Groove Ball Bearings
NTN 61911 Bearing558013NTNDeep Groove Ball Bearings
NACHI 61911-ZN Bearing558013NACHIDeep Groove Ball Bearings
NSK 61911-RZ Bearing558013NSKDeep Groove Ball Bearings
NTN 61911-RZ Bearing558013NTNDeep Groove Ball Bearings
TBS 71911 AC Bearing558013TBSAngular Contact Ball Bearings
NTN 61911-ZN Bearing558013NTNDeep Groove Ball Bearings
TBS 71911 C Bearing558013TBSAngular Contact Ball Bearings

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What are the structural components and design advantages of angular contact ball bearings?
 
Angular contact ball bearings consist of an inner ring, outer ring, steel balls, and a cage. The raceways of the raceways are designed with a contact angle (typically 15°, 25°, or 40°) between the bearing rings and the steel balls. They offer advantages such as the ability to simultaneously withstand radial and unidirectional axial loads, high limiting speed, high precision, good rigidity, and the ability to withstand bidirectional axial loads when installed in pairs.
 
What are the advantages of angular contact ball bearings compared to other similar bearings?
 
Compared to deep groove ball bearings, angular contact ball bearings have a higher axial load capacity and higher rigidity, making them suitable for precision positioning applications. Compared to tapered roller bearings, they have a higher limiting speed and lower friction, making them more suitable for high-speed operation. Compared to thrust ball bearings, they can simultaneously withstand combined radial and axial loads, and when used in pairs, they maintain high rigidity under bidirectional axial loads without the need for additional radial bearings.
 
What are the applicable applications and typical uses of angular contact ball bearings?
 
These bearings are suitable for high-speed, high-rigidity mechanical applications requiring precise positioning and subjected to combined loads. Typical applications include machine tool spindles, automobile wheel hubs, centrifugal pumps, high-speed electric spindles, industrial robot joints, aero-engine spindles, and precision instrument turntables.

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