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KOYO 7908CDB bearing

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KOYO 7908CDB Bearing Details:
Bearing Name7908CDB
New Model7908CDB
Old Model1236908 bearing
product Model7908CDB
CategoryAngular Contact Ball Bearings
BrandKOYO Bearing
Inner Diameter d ( mm ) 35
Outer Diameter D ( mm )55
Thickness B ( mm )20
KOYO 7908CDB Bearing   Bearing Size and Drawing:
7908CDB
KOYO 7908CDB Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
INA RNA 4907 Bearing355520INANeedle Roller Bearing
FAG 71907 C/ DB Bearing355520FAGAngular Contact Ball Bearings
INA NAO 35X55X20 Bearing355520INANeedle Roller Bearing
NTN 71907C/DB Bearing355520NTNAngular Contact Ball Bearings
MRC 71907 C/ DT Bearing355520MRCAngular Contact Ball Bearings
FAG 71907 C/ DT Bearing355520FAGAngular Contact Ball Bearings
FAG 71908C/DB Bearing355520FAGAngular Contact Ball Bearings
GMN 71907C/DB Bearing355520GMNAngular Contact Ball Bearings
TBS 71907C/DT Bearing355520TBSAngular Contact Ball Bearings
INA NA4907 Bearing355520INANeedle Roller Bearing

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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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