NTN QJ 311 Bearing_NTN QJ 311 Size and Details

NTN QJ 311 bearing

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NTN QJ 311 Bearing Details：

Bearing Name	QJ 311
New Model	QJ311
Old Model	176311 bearing
product Model	QJ311
Category	Angular Contact Ball Bearings
Brand	NTN Bearing
Inner Diameter d ( mm )	55
Outer Diameter D ( mm )	120
Thickness B ( mm )	29

NTN QJ 311 Bearing Bearing Size and Drawing：

NTN QJ 311 Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
NSK N311 Bearing	55	120	29	NSK	Cylindrical Roller Bearings
NSK 6311-Z Bearing	55	120	29	NSK	Deep Groove Ball Bearings
FAG 7603055 TVP Bearing	55	120	29	FAG	Angular Contact Thrust Ball Bearings
NSK NSKNU311EM Bearing	55	120	29	NSK	Cylindrical Roller Bearings
TBS 21311 E K* Bearing	55	120	29	TBS	Spherical Roller Bearings
ZKL NJ 311 Bearing	55	120	29	ZKL	Cylindrical Roller Bearings
FLT NJ311 Bearing	55	120	29	FLT	Cylindrical Roller Bearings
STEYR NUP 311 E Bearing	55	120	29	STEYR	Cylindrical Roller Bearings
RHP 6311 N Bearing	55	120	29	RHP	Deep Groove Ball Bearings
NTN 6311-Z Bearing	55	120	29	NTN	Deep 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.

Preview：RHP QJ 207
Next：NTN QJ 321

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