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7912A5

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7912A5TYNSUMP4 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7912A5TYNSUMP4

Boundary Dimensions

d 60 mm Bore diameter
D 85 mm Outside diameter
B 13 mm Width
r(min.) 1 mm Chamfer Dimension
r1(min.) 0.6 mm Chamfer Dimension

Basic Load Ratings

Cr 19.2 kN Basic Dynamic Load Rating
C0r 17.7 kN Basic Static Load Rating

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

Grease 13800 min-1 Limiting Speed
Oil (Oil-air) 19000 min-1 Limiting Speed

Dimensions

A5: 25° Contact Angle
a 23.4 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 66 mm Diameter of Shaft Abutment
Da(max.) 79 mm Diameter of Housing Abutment
Db(max.) 80 mm Diameter of Housing Abutment
ra(max.) 1 mm Radius of Shaft or Housing Fillet
rb(max.) 0.5 mm Radius of Shaft or Housing Fillet

Performance

Pa 13.0 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 101N 117N/μm -2μm
L 201N 150N/μm -5μm
M 419N 198N/μm -10μm
H 884N 267N/μm -18μm

Additional information

1.1 g/brg Recommended Grease Quantities

Mass

0.198 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7912A5

© NSK Ltd.

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