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7938A5

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7938A5TYNSUHP5 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7938A5TYNSUHP5

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 The limiting speeds of the ball guided cage is lower than the outer ring guided cage.

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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