NSK QJ 238 Bearing_NSK QJ 238 Size and Details

NSK QJ 238 bearing

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NSK QJ 238 Bearing Details：

Bearing Name	QJ 238
New Model	QJ238
Old Model	bearing
product Model	QJ238
Category	Angular Contact Ball Bearings
Brand	NSK Bearing
Inner Diameter d ( mm )	190
Outer Diameter D ( mm )	340
Thickness B ( mm )	55

NSK QJ 238 Bearing Bearing Size and Drawing：

NSK QJ 238 Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
FAG 30238 Bearing	190	340	55	FAG	Tapered Roller Bearings
TORRINGTON 6238 Bearing	190	340	55	TORRINGTON	Deep Groove Ball Bearings
NSK NF238 Bearing	190	340	55	NSK	Cylindrical Roller Bearings
NSK QJ238 Bearing	190	340	55	NSK	Angular Contact Ball Bearings
BARDEN 7238 C Bearing	190	340	55	BARDEN	Angular Contact Ball Bearings
NSK NSKN238M Bearing	190	340	55	NSK	Cylindrical Roller Bearings
FLT NUP 238 Bearing	190	340	55	FLT	Cylindrical Roller Bearings
TBS NU238ECMA* Bearing	190	340	55	TBS	Cylindrical Roller Bearings
RIV NU 238 Bearing	190	340	55	RIV	Cylindrical Roller Bearings
ZKL 7238 B Bearing	190	340	55	ZKL	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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