NTN 7311AC Bearing_NTN 7311AC Size and Details

NTN 7311AC bearing

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NTN 7311AC Bearing Details：

Bearing Name	7311AC
New Model	7311AC
Old Model	46311 bearing
product Model	7311AC
Category	Angular Contact Ball Bearings
Brand	NTN Bearing
Inner Diameter d ( mm )	55
Outer Diameter D ( mm )	120
Thickness B ( mm )	29

NTN 7311AC Bearing Bearing Size and Drawing：

NTN 7311AC Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
SNR 6311N Bearing	55	120	29	SNR	Deep Groove Ball Bearings
RIV NU311 Bearing	55	120	29	RIV	Cylindrical Roller Bearings
NSK NJ311+HJ311 Bearing	55	120	29	NSK	Cylindrical Roller Bearings
NSK 760311 Bearing	55	120	29	NSK	Thrust Ball Bearings
TBS 7311BEY Bearing	55	120	29	TBS	Angular Contact Ball Bearings
KOYO NF311 Bearing	55	120	29	KOYO	Cylindrical Roller Bearings
KOYO 7311C Bearing	55	120	29	KOYO	Angular Contact Ball Bearings
TBS NUP311ECJ* Bearing	55	120	29	TBS	Cylindrical Roller Bearings
NSK 7311AC Bearing	55	120	29	NSK	Angular Contact Ball Bearings
NACHI 6311 Bearing	55	120	29	NACHI	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：NTN 7320AC
Next：NTN 7321AC

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