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7921CSN24

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7921CSN24TYNSUHP4 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7921CSN24TYNSUHP4

Boundary Dimensions

d 105 mm Bore diameter
D 145 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 51.0 kN Basic Dynamic Load Rating
C0r 54.5 kN Basic Static Load Rating

Speeds The limiting speeds of the ball guided cage is lower than the outer ring guided cage.

Grease 9000 min-1 Limiting Speed
Oil (Oil-air) 11000 min-1 Limiting Speed

Dimensions

C: 15° Contact Angle
a 26.7 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 112 mm Diameter of Shaft Abutment
Da(max.) 138 mm Diameter of Housing Abutment
Db(max.) 140 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 40.8 kN Permissible Axial Load

Calculation factors

f0 16.6 Factor

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 206N 98N/μm -5μm
L 437N 133N/μm -13μm
M 1009N 193N/μm -27μm
H 2058N 274N/μm -45μm

Additional information

4.8 g/brg Recommended Grease Quantities

Mass

0.729 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_ACBB_ST_C
NSK Product Type Super Precision Bearing
Designations 7921CSN24

© NSK Ltd.

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