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7230A5

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7230A5TRSUHP3 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7230A5TRSUHP3

Boundary Dimensions

d 150 mm Bore diameter
D 270 mm Outside diameter
B 45 mm Width
r(min.) 3 mm Chamfer Dimension
r1(min.) 1.1 mm Chamfer Dimension

Basic Load Ratings

Cr 325 kN Basic Dynamic Load Rating
C0r 290 kN Basic Static Load Rating

Speeds

Grease 4800 min-1 Limiting Speed
Oil (Oil-air) 7200 min-1 Limiting Speed

Dimensions

A5: 25° Contact Angle
a 71.5 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 164 mm Diameter of Shaft Abutment
Da(max.) 256 mm Diameter of Housing Abutment
Db(max.) 263 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 231 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 1854N 417N/μm -21μm
L 3642N 533N/μm -36μm
M 8044N 720N/μm -64μm
H 16467N 961N/μm -104μm

Additional information

49 g/brg Recommended Grease Quantities

Mass

11.0 kg Mass(approx.)
Designations Basic Load Ratings Axial Internal Clearance Accuracy Limiting Speeds Mass
Cr
 C0r
 min
 max
 Grease
(min-1)		 Oil (Oil-air)
(min-1)
(kg)
7230A5TRSUHP3 325 290 P3: Special class (ISO Class 4 dimensional tolerances and ISO Class 2 running accuracy.) 4800 7200 11.0

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CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7230A5

© NSK Ltd.

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