TBS 1221 K Bearing_TBS 1221 K Size and Details

TBS 1221 K bearing

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TBS 1221 K Bearing Details：

Bearing Name	1221 K
New Model	1221K
Old Model	111221 bearing
product Model	1221K
Category	Self-aligning Ball Bearings
Brand	TBS Bearing
Inner Diameter d ( mm )	105
Outer Diameter D ( mm )	190
Thickness B ( mm )	36

TBS 1221 K Bearing Bearing Size and Drawing：

TBS 1221 K Bearing With size alternative model

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
NACHI NJ 221 E Bearing	105	190	36	NACHI	Cylindrical Roller Bearings
NACHI NJ 221 Bearing	105	190	36	NACHI	Cylindrical Roller Bearings
SNR 6221 Bearing	105	190	36	SNR	Deep Groove Ball Bearings
RIV N221 Bearing	105	190	36	RIV	Cylindrical Roller Bearings
STEYR NJ 221 E Bearing	105	190	36	STEYR	Cylindrical Roller Bearings
NSK NSK7221BWG Bearing	105	190	36	NSK	Angular Contact Ball Bearings
GMN 7221 AC Bearing	105	190	36	GMN	Angular Contact Ball Bearings
NACHI NJ221E Bearing	105	190	36	NACHI	Cylindrical Roller Bearings
NACHI NF 221 Bearing	105	190	36	NACHI	Cylindrical Roller Bearings
MRC 6221-2Z Bearing	105	190	36	MRC	Deep Groove Ball Bearings

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What are the structural components and design advantages of self-aligning ball bearings?

Self-aligning ball bearings consist of an inner ring, an outer ring, two rows of steel balls, and a cage. The outer ring raceway is spherical, and the inner ring has a double-raceway design, providing excellent self-aligning performance. This effectively compensates for alignment errors between the shaft and the housing bore, as well as shaft deflection. They also have low friction and a high limiting speed, making them suitable for applications with installation misalignment or shaft deformation.

What are the advantages of self-aligning ball bearings compared to other similar bearings?

Compared to deep groove ball bearings, self-aligning ball bearings have self-aligning capabilities, accommodating greater alignment errors and shaft deflection. Compared to spherical roller bearings, they have a higher limiting speed and lower friction, but a lower load capacity, making them more suitable for medium to light load conditions. Compared to cylindrical roller bearings, they can withstand certain axial loads, and their self-aligning performance reduces the requirements for installation precision.

What are the applicable occasions and typical applications of self-aligning ball bearings?

These bearings are suitable for medium to light load applications where alignment precision requirements are not high and deflection or impact is present. Typical applications include textile machinery, agricultural equipment, conveyor rollers, small fans, crushers, vibrating screens, and woodworking machinery.

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