TBS 7221 B Bearing_TBS 7221 B Size and Details

TBS 7221 B bearing

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TBS 7221 B Bearing Details：

Bearing Name	7221 B
New Model	7221B
Old Model	66221 bearing
product Model	7221B
Category	Angular Contact Ball Bearings
Brand	TBS Bearing
Inner Diameter d ( mm )	105
Outer Diameter D ( mm )	190
Thickness B ( mm )	36

TBS 7221 B Bearing Bearing Size and Drawing：

TBS 7221 B Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
KOYO NJ 2207 E +HJ 2209 E Bearing	105	190	36	KOYO	Cylindrical Roller Bearings
TBS NU 221 E CJ* Bearing	105	190	36	TBS	Cylindrical Roller Bearings
NACHI NU221E Bearing	105	190	36	NACHI	Cylindrical Roller Bearings
NTN 6221-Z Bearing	105	190	36	NTN	Deep Groove Ball Bearings
KOYO NJ221 Bearing	105	190	36	KOYO	Cylindrical Roller Bearings
RHP NF221 Bearing	105	190	36	RHP	Cylindrical Roller Bearings
STEYR 6221 Bearing	105	190	36	STEYR	Deep Groove Ball Bearings
NSK NJ 2312 +HJ 2314 Bearing	105	190	36	NSK	Cylindrical Roller Bearings
FAG N221E.M1 Bearing	105	190	36	FAG	Cylindrical Roller Bearings
TBS NJ 2238 +HJ 2240 Bearing	105	190	36	TBS	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.

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