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7944C

Standard Series High Precision Angular Contact Ball Bearings
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Parts Number
7944CTRSUHP5 Standard Series High Precision Angular Contact Ball Bearings
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Parts Number

7944CTRSUHP5

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 240 kN Basic Dynamic Load Rating
C0r 256 kN Basic Static Load Rating

Speeds

Grease 4100 min-1 Limiting Speed
Oil (Oil-air) 6400 min-1 Limiting Speed

Dimensions

C: 15° Contact Angle
a 53.8 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 150 kN Permissible Axial Load

Calculation factors

f0 16.7 Factor

Preload,Rigidity(DB and DF arrangement)

Preload Axial Rigidity Measured axial clearance
EL 848N 193N/μm -17μm
L 1690N 256N/μm -32μm
M 3793N 367N/μm -59μm
H 7530N 513N/μm -93μm

Additional information

39 g/brg Recommended Grease Quantities

Mass

7.50 kg Mass(approx.)
Designations Basic Load Ratings Axial Internal Clearance Accuracy Limiting Speeds Mass
Cr
 C0r
 min
 max
 Grease
(min-1)		 Oil (Oil-air)
(min-1)
(kg)
7944CTRSUHP5 240 256 P5: ISO Class 5 4100 6400 7.50

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CAD
More Information
NSK Product Type2 SP_ACBB_ST_C
NSK Product Type Super Precision Bearing
Designations 7944C

© NSK Ltd.

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