KOYO 3311A-2RS Bearing_KOYO 3311A-2RS Size and Details

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KOYO 3311A-2RS bearing

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KOYO 3311A-2RS Bearing Details：

Bearing Name	3311A-2RS
New Model	3311A-2RS
Old Model	bearing
product Model	3311A-2RS
Category	Angular Contact Ball Bearings
Brand	KOYO Bearing
Inner Diameter d ( mm )	55
Outer Diameter D ( mm )	120
Thickness B ( mm )	49.2

KOYO 3311A-2RS Bearing Bearing Size and Drawing：

KOYO 3311A-2RS Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
KOYO 3311A-2Z Bearing	55	120	49.2	KOYO	Angular Contact Ball Bearings
FAG 3311 A Bearing	55	120	49.2	FAG	Angular Contact Ball Bearings
RHP 3311 A Bearing	55	120	49.2	RHP	Angular Contact Ball Bearings
TBS 3311 D M A Bearing	55	120	49.2	TBS	Angular Contact Ball Bearings
KOYO 5311ZZ Bearing	55	120	49.2	KOYO	Angular Contact Ball Bearings
NTN 3311 Bearing	55	120	49.2	NTN	Angular Contact Ball Bearings
KOYO 3311 A-2Z Bearing	55	120	49.2	KOYO	Angular Contact Ball Bearings
TBS 3311 D TN9 Bearing	55	120	49.2	TBS	Angular Contact Ball Bearings
TBS 3311 A TN9* Bearing	55	120	49.2	TBS	Angular Contact Ball Bearings
TBS 5311 E-2Z Bearing	55	120	49.2	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.

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