NACHI 7211 B Bearing_NACHI 7211 B Size and Details

NACHI 7211 B bearing

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NACHI 7211 B Bearing Details：

Bearing Name	7211 B
New Model	7211B
Old Model	66211 bearing
product Model	7211B
Category	Angular Contact Ball Bearings
Brand	NACHI Bearing
Inner Diameter d ( mm )	55
Outer Diameter D ( mm )	100
Thickness B ( mm )	21

NACHI 7211 B Bearing Bearing Size and Drawing：

NACHI 7211 B Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
FLT NUP211 Bearing	55	100	21	FLT	Cylindrical Roller Bearings
RIV N 211 Bearing	55	100	21	RIV	Cylindrical Roller Bearings
TBS NUP 211 E CJ* Bearing	55	100	21	TBS	Cylindrical Roller Bearings
TBS *6211-2Z Bearing	55	100	21	TBS	Deep Groove Ball Bearings
NTN QJ 211 Bearing	55	100	21	NTN	Angular Contact Ball Bearings
KOYO 6211-2Z Bearing	55	100	21	KOYO	Deep Groove Ball Bearings
NACHI 6211-Z Bearing	55	100	21	NACHI	Deep Groove Ball Bearings
SNR 7211B Bearing	55	100	21	SNR	Angular Contact Ball Bearings
FAG QJ211 Bearing	55	100	21	FAG	Angular Contact Ball Bearings
TBS 6211-2Z Bearing	55	100	21	TBS	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.

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