NACHI 7311B Bearing_NACHI 7311B Size and Details

NACHI 7311B bearing

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NACHI 7311B Bearing Details：

Bearing Name	7311B
New Model	7311B
Old Model	66311 bearing
product Model	7311B
Category	Angular Contact Ball Bearings
Brand	NACHI Bearing
Inner Diameter d ( mm )	55
Outer Diameter D ( mm )	120
Thickness B ( mm )	29

NACHI 7311B Bearing Bearing Size and Drawing：

NACHI 7311B Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
RHP 1311 Bearing	55	120	29	RHP	Self-aligning Ball Bearings
NSK 30311 Bearing	55	120	29	NSK	Tapered Roller Bearings
TBS NUP311ECP* Bearing	55	120	29	TBS	Cylindrical Roller Bearings
NSK NJ311E Bearing	55	120	29	NSK	Cylindrical Roller Bearings
FAG 21311 EK.TVPB+AH X311 Bearing	55	120	29	FAG	Spherical Roller Bearings
SNR 31311 Bearing	55	120	29	SNR	Tapered Roller Bearings
KOYO 6311-2Z Bearing	55	120	29	KOYO	Deep Groove Ball Bearings
NACHI 30311 Bearing	55	120	29	NACHI	Tapered Roller Bearings
KOYO NU 311 R Bearing	55	120	29	KOYO	Cylindrical Roller Bearings
ZKL NJ311 Bearing	55	120	29	ZKL	Cylindrical Roller 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：NACHI 7301B
Next：TORRINGTON 7305B

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