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7221A5

Standard Series High Precision Angular Contact Ball Bearings

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Parts Number
7221A5TRSUHP5 Standard Series High Precision Angular Contact Ball Bearings			Add to Compare You can use this service by registering as a member.

Product Information

Parts Number

7221A5TRSUHP5

Boundary Dimensions

d	105	mm	Bore diameter
D	190	mm	Outside diameter
B	36	mm	Width
r(min.)	2.1	mm	Chamfer Dimension
r1(min.)	1.1	mm	Chamfer Dimension

Basic Load Ratings

C_r	195	kN	Basic Dynamic Load Rating
C_0r	137	kN	Basic Static Load Rating

Speeds

Grease	6800	min^-1	Limiting Speed
Oil (Oil-air)	10200	min^-1	Limiting Speed

Dimensions

	A5: 25°		Contact Angle
a	52.4	mm	Effective Load Center

Abutment and Fillet Dimensions

da(min.)	117	mm	Diameter of Shaft Abutment
Da(max.)	178	mm	Diameter of Housing Abutment
Db(max.)	183	mm	Diameter of Housing Abutment
ra(max.)	2	mm	Radius of Shaft or Housing Fillet
rb(max.)	1	mm	Radius of Shaft or Housing Fillet

Performance

Pa

111

kN

Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

	Preload	Axial Rigidity	Measured axial clearance
EL	862N	268N/μm	-15μm
L	1790N	348N/μm	-27μm
M	3950N	471N/μm	-48μm
H	7929N	625N/μm	-77μm

Additional information

21

g/brg

Recommended Grease Quantities

Mass

3.77

kg

Mass(approx.)

Drawing for Reference

Designations	Basic Load Ratings		Axial Internal Clearance			Accuracy	Limiting Speeds		Mass
Designations	C_r	C_0r		min	max	Accuracy	Grease (min^-1)	Oil (Oil-air) (min^-1)	(kg)
7221A5TRSUHP5	195	137				P5: ISO Class 5	6800	10200	3.77

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CAD

Customer Questions

More Information

More Information
NSK Product Type2	SP_ACBB_ST_A5
NSK Product Type	Super Precision Bearing
Designations	7221A5

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