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7940A5SN24

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7940A5SN24TRSUMP4 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7940A5SN24TRSUMP4

Boundary Dimensions

d 200 mm Bore diameter
D 280 mm Outside diameter
B 38 mm Width
r(min.) 2.1 mm Chamfer Dimension
r1(min.) 1.1 mm Chamfer Dimension

Basic Load Ratings

Cr 225 kN Basic Dynamic Load Rating
C0r 222 kN Basic Static Load Rating

Speeds

Grease 5000 min-1 Limiting Speed
Oil (Oil-air) 7800 min-1 Limiting Speed

Dimensions

A5: 25° Contact Angle
a 75.0 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 212 mm Diameter of Shaft Abutment
Da(max.) 268 mm Diameter of Housing Abutment
Db(max.) 273 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 202 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 1418N 526N/μm -12μm
L 2938N 685N/μm -22μm
M 6817N 942N/μm -41μm
H 13669N 1247N/μm -66μm

Additional information

35 g/brg Recommended Grease Quantities

Mass

5.07 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)
7940A5SN24TRSUMP4 225 222 P4: ISO Class 4 5000 7800 5.07

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CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7940A5SN24

© NSK Ltd.

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