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GMN 7004AC/DF bearing

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GMN 7004AC/DF Bearing Details:
Bearing Name7004AC/DF
New Model7004AC/DF
Old Model346104 bearing
product Model7004AC/DF
CategoryAngular Contact Ball Bearings
BrandGMN Bearing
Inner Diameter d ( mm ) 20
Outer Diameter D ( mm )42
Thickness B ( mm )24
GMN 7004AC/DF Bearing   Bearing Size and Drawing:
7004AC/DF
GMN 7004AC/DF Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
NACHI 7004AC/DF Bearing204224NACHIAngular Contact Ball Bearings
NSK 7004C/DF Bearing204224NSKAngular Contact Ball Bearings
MRC 7004 C/ DF Bearing204224MRCAngular Contact Ball Bearings
NACHI 7004 C/ DB Bearing204224NACHIAngular Contact Ball Bearings
BARDEN 7004AC/DF Bearing204224BARDENAngular Contact Ball Bearings
MRC 7004 C/ DT Bearing204224MRCAngular Contact Ball Bearings
NACHI 7004 AC/ DF Bearing204224NACHIAngular Contact Ball Bearings
SNR 7004 C/ DF Bearing204224SNRAngular Contact Ball Bearings
NSK 7004C/DB Bearing204224NSKAngular Contact Ball Bearings
KOYO 7004DF Bearing204224KOYOAngular 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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