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7940C

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7940CTRSUMP3 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7940CTRSUMP3

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 199 kN Basic Dynamic Load Rating
C0r 244 kN Basic Static Load Rating

Speeds

Grease 4400 min-1 Limiting Speed
Oil (Oil-air) 6900 min-1 Limiting Speed

Dimensions

C: 15° Contact Angle
a 51.2 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 144 kN Permissible Axial Load

Calculation factors

f0 16.5 Factor

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 784N 183N/μm -16μm
L 1584N 244N/μm -31μm
M 3592N 351N/μm -58μm
H 7168N 492N/μm -92μm

Additional information

35 g/brg Recommended Grease Quantities

Mass

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

© NSK Ltd.

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