NTN 7311B/DT Bearing_NTN 7311B/DT Size and Details

NTN 7311B/DT bearing

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NTN 7311B/DT Bearing Details：

Bearing Name	7311B/DT
New Model	7311B/DT
Old Model	466311 bearing
product Model	7311B/DT
Category	Angular Contact Ball Bearings
Brand	NTN Bearing
Inner Diameter d ( mm )	55
Outer Diameter D ( mm )	120
Thickness B ( mm )	58

NTN 7311B/DT Bearing Bearing Size and Drawing：

NTN 7311B/DT Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
MRC 7311 B/ DF Bearing	55	120	58	MRC	Angular Contact Ball Bearings
DKF 7311 AC/ DF Bearing	55	120	58	DKF	Angular Contact Ball Bearings
NACHI 7311 C/ DB Bearing	55	120	58	NACHI	Angular Contact Ball Bearings
NTN 7311 B/ DB Bearing	55	120	58	NTN	Angular Contact Ball Bearings
KOYO 7311AC/DB Bearing	55	120	58	KOYO	Angular Contact Ball Bearings
NSK 7311AC/DT Bearing	55	120	58	NSK	Angular Contact Ball Bearings
NSK 7311AC/DB Bearing	55	120	58	NSK	Angular Contact Ball Bearings
MRC 7311 C/ DF Bearing	55	120	58	MRC	Angular Contact Ball Bearings
TBS 2×7311BECBP* Bearing	55	120	58	TBS	Angular Contact Ball Bearings
TBS 2×7311BEGAP* Bearing	55	120	58	TBS	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.

Preview：KOYO 7218B/DT
Next：NTN 7236B/DT

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