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NNU4992

Double-Row Cylindrical Roller Bearings
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Parts Number
NNU4992E44CC1P4 Double-Row Cylindrical Roller Bearings
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Parts Number

NNU4992E44CC1P4

Boundary Dimensions

NNU: Outer ring rib type Bearing Type
d 460 mm Bore diameter
D 620 mm Outside diameter
B 160 mm Width
r(min.) 4 mm Chamfer Dimension

Basic Load Ratings

Cr 2400 kN Basic Dynamic Load Rating
C0r 6200 kN Basic Static Load Rating

Speeds

Grease 1100 min-1 Limiting Speed
Oil (Oil-air) 1300 min-1 Limiting Speed

Dimensions

Ew 507 mm Roller Circumscribed Circle Diameters
s 3.3 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 476 mm Diameter of Shaft Abutment
d1a(min.) 489 mm Diameter of Shaft Abutment
Da(max.) 604 mm Diameter of Housing Abutment
ra(max.) 3 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 95 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 25 μm Clearance in Bearings with Cylindrical Bores

Holes Dimensions

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

Mass

128 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NNU
NSK Product Type Super Precision Bearing
Designations NNU4992

© NSK Ltd.

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