NTN QJ214 bearing

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NTN QJ214 Bearing Details:
Bearing NameQJ214
New ModelQJ214
Old Model176214 bearing
product ModelQJ214
CategoryAngular Contact Ball Bearings
BrandNTN Bearing
Inner Diameter d ( mm ) 70
Outer Diameter D ( mm )125
Thickness B ( mm )24
NTN QJ214 Bearing   Bearing Size and Drawing:
QJ214
NTN QJ214 Bearing With size alternative model
ModelInner Diameter
d(mm)
Outer Diameter
D(mm)
thickness
B(mm)
BrandType
NACHI 7214C Bearing7012524NACHIAngular Contact Ball Bearings
TBS QJ 214 N2PH AS* Bearing7012524TBSAngular Contact Ball Bearings
STEYR NUP214E Bearing7012524STEYRCylindrical Roller Bearings
KOYO 6214 Bearing7012524KOYODeep Groove Ball Bearings
MRC 7214AC Bearing7012524MRCAngular Contact Ball Bearings
FAG 6214-RS Bearing7012524FAGDeep Groove Ball Bearings
NTN 6214-ZN Bearing7012524NTNDeep Groove Ball Bearings
FAG 7214C Bearing7012524FAGAngular Contact Ball Bearings
FAG NU 214 E Bearing7012524FAGCylindrical Roller Bearings
KOYO 6214Z Bearing7012524KOYODeep Groove 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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