7920A5SN24

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7920A5SN24TRSUHP4

Boundary Dimensions

d 100 mm Bore diameter
D 140 mm Outside diameter
B 20 mm Width
r(min.) 1.1 mm Chamfer Dimension
r1(min.) 0.6 mm Chamfer Dimension

Basic Load Ratings

Cr 47.5 kN Basic Dynamic Load Rating
C0r 49.5 kN Basic Static Load Rating

Speeds

Grease 10900 min-1 Limiting Speed
Oil (Oil-air) 16300 min-1 Limiting Speed

Dimensions

A5: 25° Contact Angle
a 38.0 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 107 mm Diameter of Shaft Abutment
Da(max.) 133 mm Diameter of Housing Abutment
Db(max.) 135 mm Diameter of Housing Abutment
ra(max.) 1 mm Radius of Shaft or Housing Fillet
rb(max.) 0.6 mm Radius of Shaft or Housing Fillet

Performance

Pa 46.8 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 348N 241N/μm -5μm
L 694N 310N/μm -10μm
M 1410N 405N/μm -18μm
H 2956N 545N/μm -31μm

Additional information

4.6 g/brg Recommended Grease Quantities

Mass

0.710 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7920A5SN24
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