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7938CSN24

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7938CSN24TRSUELP5 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7938CSN24TRSUELP5

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 186 kN Basic Dynamic Load Rating
C0r 184 kN Basic Static Load Rating

Speeds

Grease 6300 min-1 Limiting Speed
Oil (Oil-air) 9700 min-1 Limiting Speed

Dimensions

C: 15° Contact Angle
a 46.6 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 137 kN Permissible Axial Load

Calculation factors

f0 16.7 Factor

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 657N 187N/μm -12μm
L 1370N 252N/μm -25μm
M 3228N 368N/μm -49μm
H 6543N 518N/μm -79μm

Additional information

26 g/brg Recommended Grease Quantities

Mass

4.38 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)
7938CSN24TRSUELP5 186 184 P5: ISO Class 5 6300 9700 4.38

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CAD
More Information
NSK Product Type2 SP_ACBB_ST_C
NSK Product Type Super Precision Bearing
Designations 7938CSN24

© NSK Ltd.

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