NN4988
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NSK NN4988

Double-Row Cylindrical Roller Bearings

(BRAND):NSK
(Availability):In Stock

Detailed data of

NN4988

Designations

NN4988

Boundary Dimensions

NN: Inner ring rib type Bearing Type
d 440 mm Bore diameter
D 600 mm Outside diameter
B 160 mm Width
r(min.) 4 mm Chamfer Dimension

Basic Load Ratings

Cr 2370 kN Basic Dynamic Load Rating
C0r 6000 kN Basic Static Load Rating

Speeds

Grease 1100 min-1 Limiting Speed
Oil (Oil-air) 1400 min-1 Limiting Speed

Dimensions

Ew 559 mm Roller Circumscribed Circle Diameters
s 3.3 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 456 mm Diameter of Shaft Abutment
d1a(min.) 469 mm Diameter of Shaft Abutment
Da(min.) 562 mm Diameter of Housing Abutment
Da(max.) 584 mm Diameter of Housing Abutment
ra(max.) 3 mm Radius of Shaft or Housing Fillet

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