FAG QJ 308 Bearing_FAG QJ 308 Size and Details

FAG QJ 308 bearing

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FAG QJ 308 Bearing Details：

Bearing Name	QJ 308
New Model	QJ308
Old Model	176308 bearing
product Model	QJ308
Category	Angular Contact Ball Bearings
Brand	FAG Bearing
Inner Diameter d ( mm )	40
Outer Diameter D ( mm )	90
Thickness B ( mm )	23

FAG QJ 308 Bearing Bearing Size and Drawing：

FAG QJ 308 Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
NTN 30308 Bearing	40	90	23	NTN	Tapered Roller Bearings
NSK NSKNU308ET Bearing	40	90	23	NSK	Cylindrical Roller Bearings
KOYO NU 308 E Bearing	40	90	23	KOYO	Cylindrical Roller Bearings
KOYO 1308 Bearing	40	90	23	KOYO	Self-aligning Ball Bearings
KOYO 6308 ZZ Bearing	40	90	23	KOYO	Deep Groove Ball Bearings
MAC NU 308 Bearing	40	90	23	MAC	Cylindrical Roller Bearings
INA 87409 Bearing	40	90	23	INA	Cylindrical Roller Bearings
TBS 6308-2Z Bearing	40	90	23	TBS	Deep Groove Ball Bearings
STEYR 6308-2RS Bearing	40	90	23	STEYR	Deep Groove Ball Bearings
NTN NF308 Bearing	40	90	23	NTN	Cylindrical Roller 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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