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7940A5

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7940A5TRSUHP5 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7940A5TRSUHP5

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 187 kN Basic Dynamic Load Rating
C0r 231 kN Basic Static Load Rating

Speeds

Grease 3800 min-1 Limiting Speed
Oil (Oil-air) 5900 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 170 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 1256N 451N/μm -12μm
L 2554N 584N/μm -22μm
M 5855N 800N/μm -41μm
H 11667N 1056N/μm -66μm

Additional information

35 g/brg Recommended Grease Quantities

Mass

5.95 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7940A5

© NSK Ltd.

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