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7944A5

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7944A5TRSUHP5 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7944A5TRSUHP5

Boundary Dimensions

d 220 mm Bore diameter
D 300 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 188 kN Basic Dynamic Load Rating
C0r 242 kN Basic Static Load Rating

Speeds

Grease 3500 min-1 Limiting Speed
Oil (Oil-air) 5400 min-1 Limiting Speed

Dimensions

A5: 25° Contact Angle
a 79.6 mm Effective Load Center

Abutment and Fillet Dimensions

da(min.) 232 mm Diameter of Shaft Abutment
Da(max.) 288 mm Diameter of Housing Abutment
Db(max.) 293 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 176 kN Permissible Axial Load

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 1288N 465N/μm -12μm
L 2631N 604N/μm -22μm
M 6047N 828N/μm -41μm
H 12067N 1094N/μm -66μm

Additional information

39 g/brg Recommended Grease Quantities

Mass

7.50 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_ACBB_ST_A5
NSK Product Type Super Precision Bearing
Designations 7944A5

© NSK Ltd.

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