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7938A5

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7938A5TRSUELP3 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7938A5TRSUELP3

Boundary Dimensions

d 190 mm Bore diameter
D 260 mm Outside diameter
B 33 mm Width
r(min.) 2 mm Chamfer Dimension
r1(min.) 1 mm Chamfer Dimension

Basic Load Ratings

Cr 146 kN Basic Dynamic Load Rating
C0r 182 kN Basic Static Load Rating

Speeds

Grease 4000 min-1 Limiting Speed
Oil (Oil-air) 6300 min-1 Limiting Speed

Dimensions

A5: 25° Contact Angle
a 69.0 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 200 mm Diameter of Shaft Abutment
Da(max.) 250 mm Diameter of Housing Abutment
Db(max.) 254 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 131 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 1013N 410N/μm -10μm
L 2075N 531N/μm -19μm
M 4582N 718N/μm -35μm
H 9175N 950N/μm -57μm

Additional information

26 g/brg Recommended Grease Quantities

Mass

5.12 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7938A5

© NSK Ltd.

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