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KOYO 7221 DB bearing

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KOYO 7221 DB Bearing Details:
Bearing Name7221 DB
New Model7221DB
Old Model246221 bearing
product Model7221DB
CategoryAngular Contact Ball Bearings
BrandKOYO Bearing
Inner Diameter d ( mm ) 105
Outer Diameter D ( mm )190
Thickness B ( mm )72
KOYO 7221 DB Bearing   Bearing Size and Drawing:
7221 DB
KOYO 7221 DB Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
TBS 7221AC/DF Bearing10519072TBSAngular Contact Ball Bearings
TBS 2 Bearing10519072TBSAngular Contact Ball Bearings
NTN 7221 C/ DF Bearing10519072NTNAngular Contact Ball Bearings
KOYO 7221 C/ DB Bearing10519072KOYOAngular Contact Ball Bearings
TBS 7221 B/ DT Bearing10519072TBSAngular Contact Ball Bearings
BARDEN 7221C/DF Bearing10519072BARDENAngular Contact Ball Bearings
SNR 7221 AC/ DB Bearing10519072SNRAngular Contact Ball Bearings
NSK 7221AC/DB Bearing10519072NSKAngular Contact Ball Bearings
FAG 7221B/DF Bearing10519072FAGAngular Contact Ball Bearings
RHP 7221 C/ DB Bearing10519072RHPAngular 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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