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7228A5

Standard Series High Precision Angular Contact Ball Bearings

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Parts Number
7228A5TRSUHP5 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

7228A5TRSUHP5

Boundary Dimensions

d	140	mm	Bore diameter
D	250	mm	Outside diameter
B	42	mm	Width
r(min.)	3	mm	Chamfer Dimension
r1(min.)	1.1	mm	Chamfer Dimension

Basic Load Ratings

C_r	285	kN	Basic Dynamic Load Rating
C_0r	242	kN	Basic Static Load Rating

Speeds

Grease	5200	min^-1	Limiting Speed
Oil (Oil-air)	7700	min^-1	Limiting Speed

Dimensions

	A5: 25°		Contact Angle
a	66.5	mm	Effective Load Center

Abutment and Fillet Dimensions

da(min.)	154	mm	Diameter of Shaft Abutment
Da(max.)	236	mm	Diameter of Housing Abutment
Db(max.)	243	mm	Diameter of Housing Abutment
ra(max.)	2.5	mm	Radius of Shaft or Housing Fillet
rb(max.)	1	mm	Radius of Shaft or Housing Fillet

Performance

Pa

194

kN

Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

	Preload	Axial Rigidity	Measured axial clearance
EL	1499N	376N/μm	-18μm
L	3010N	484N/μm	-32μm
M	6731N	657N/μm	-58μm
H	13407N	867N/μm	-93μm

Additional information

39

g/brg

Recommended Grease Quantities

Mass

7.91

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)
7228A5TRSUHP5	285	242				P5: ISO Class 5	5200	7700	7.91

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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	7228A5

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