NSK QJ 340 Bearing_NSK QJ 340 Size and Details

NSK QJ 340 bearing

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NSK QJ 340 Bearing Details：

Bearing Name	QJ 340
New Model	QJ340
Old Model	bearing
product Model	QJ340
Category	Angular Contact Ball Bearings
Brand	NSK Bearing
Inner Diameter d ( mm )	200
Outer Diameter D ( mm )	420
Thickness B ( mm )	80

NSK QJ 340 Bearing Bearing Size and Drawing：

NSK QJ 340 Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
ZKL 7340 B Bearing	200	420	80	ZKL	Angular Contact Ball Bearings
FAG NJ340E.M1+HJ340E Bearing	200	420	80	FAG	Cylindrical Roller Bearings
TBS 7340 BCBM Bearing	200	420	80	TBS	Angular Contact Ball Bearings
FAG NU340E.M1 Bearing	200	420	80	FAG	Cylindrical Roller Bearings
MRC 7340B Bearing	200	420	80	MRC	Angular Contact Ball Bearings
RHP 6340 Bearing	200	420	80	RHP	Deep Groove Ball Bearings
NACHI HF340 Bearing	200	420	80	NACHI	Cylindrical Roller Bearings
NSK HF 340 Bearing	200	420	80	NSK	Cylindrical Roller Bearings
KOYO 7340 Bearing	200	420	80	KOYO	Angular Contact Ball Bearings
KOYO 7340B Bearing	200	420	80	KOYO	Angular 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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