NSK QJ 338 Bearing_NSK QJ 338 Size and Details

NSK QJ 338 bearing

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NSK QJ 338 Bearing Details：

Bearing Name	QJ 338
New Model	QJ338
Old Model	bearing
product Model	QJ338
Category	Angular Contact Ball Bearings
Brand	NSK Bearing
Inner Diameter d ( mm )	190
Outer Diameter D ( mm )	400
Thickness B ( mm )	78

NSK QJ 338 Bearing Bearing Size and Drawing：

NSK QJ 338 Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
KOYO HF 338 Bearing	190	400	78	KOYO	Cylindrical Roller Bearings
RHP 6338 Bearing	190	400	78	RHP	Deep Groove Ball Bearings
TBS 6338 Bearing	190	400	78	TBS	Deep Groove Ball Bearings
DKF 7338 AC Bearing	190	400	78	DKF	Angular Contact Ball Bearings
NTN 7338 B Bearing	190	400	78	NTN	Angular Contact Ball Bearings
bearings 7338AC Bearing	190	400	78	bearings	Angular Contact Ball Bearings
NACHI 7338B Bearing	190	400	78	NACHI	Angular Contact Ball Bearings
DKF 7338AC Bearing	190	400	78	DKF	Angular Contact Ball Bearings
NSK QJ338 Bearing	190	400	78	NSK	Angular Contact Ball Bearings
NACHI 7338AC Bearing	190	400	78	NACHI	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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