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7028A5

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7028A5TRSUHP3 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7028A5TRSUHP3

Boundary Dimensions

d 140 mm Bore diameter
D 210 mm Outside diameter
B 33 mm Width
r(min.) 2 mm Chamfer Dimension
r1(min.) 1 mm Chamfer Dimension

Basic Load Ratings

Cr 157 kN Basic Dynamic Load Rating
C0r 138 kN Basic Static Load Rating

Speeds

Grease 5800 min-1 Limiting Speed
Oil (Oil-air) 8600 min-1 Limiting Speed

Dimensions

A5: 25° Contact Angle
a 57.3 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 150 mm Diameter of Shaft Abutment
Da(max.) 200 mm Diameter of Housing Abutment
Db(max.) 204 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 104 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 787N 320N/μm -9μm
L 1516N 406N/μm -17μm
M 3444N 554N/μm -33μm
H 6817N 729N/μm -54μm

Additional information

19 g/brg Recommended Grease Quantities

Mass

3.87 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)
7028A5TRSUHP3 157 138 P3: Special class (ISO Class 4 dimensional tolerances and ISO Class 2 running accuracy.) 5800 8600 3.87

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CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7028A5

© NSK Ltd.

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