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NN4980KR

Double-Row Cylindrical Roller Bearings
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Parts Number
NN4980KRE44CC9P4 Double-Row Cylindrical Roller Bearings
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Parts Number

NN4980KRE44CC9P4

Boundary Dimensions

NN: Inner ring rib type Bearing Type
d 400 mm Bore diameter
D 540 mm Outside diameter
B 140 mm Width
r(min.) 4 mm Chamfer Dimension

Basic Load Ratings

Cr 1940 kN Basic Dynamic Load Rating
C0r 4900 kN Basic Static Load Rating

Speeds

Grease 1400 min-1 Limiting Speed
Oil (Oil-air) 1700 min-1 Limiting Speed

Dimensions

Ew 505 mm Roller Circumscribed Circle Diameters
s 3.5 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 416 mm Diameter of Shaft Abutment
d1a(min.) 428 mm Diameter of Shaft Abutment
Da(min.) 508 mm Diameter of Housing Abutment
Da(max.) 524 mm Diameter of Housing Abutment
ra(max.) 3 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 75 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 25 μm Clearance in Bearings with Cylindrical Bores
CC1(max.) 150 μm Clearance in Bearings with Tapered Bores
CC1(min.) 75 μm Clearance in Bearings with Tapered Bores
CC0(max.) 90 μm Clearance in Bearings with Tapered Bores
CC0(min.) 50 μm Clearance in Bearings with Tapered Bores
CC9(max.) Clearance CC9 applicale to cylindrical roller bearings with tapered bores in ISO Tolerance Classes 5 and 4. 75 μm Clearance in Bearings with Tapered Bores
CC9(min.) Clearance CC9 applicale to cylindrical roller bearings with tapered bores in ISO Tolerance Classes 5 and 4. 35 μm Clearance in Bearings with Tapered Bores

Holes Dimensions

dh 8 mm Hole Diameter
W 15 mm Oil Groove Width
m 4 Number of Holes

Mass

84.1 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NN49
NSK Product Type Super Precision Bearing
Designations NN4980KR

© NSK Ltd.

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