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NN4992K

Double-Row Cylindrical Roller Bearings
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Parts Number
NN4992KCC9P4 Double-Row Cylindrical Roller Bearings
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Parts Number

NN4992KCC9P4

Boundary Dimensions

NN: Inner 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 579 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(min.) 582 mm Diameter of Housing 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
CC1(max.) 190 μm Clearance in Bearings with Tapered Bores
CC1(min.) 95 μm Clearance in Bearings with Tapered Bores
CC0(max.) 120 μm Clearance in Bearings with Tapered Bores
CC0(min.) 70 μm Clearance in Bearings with Tapered Bores
CC9(max.) 95 μm Clearance in Bearings with Tapered Bores
CC9(min.) 45 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

127 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NN49
NSK Product Type Super Precision Bearing
Designations NN4992K

© NSK Ltd.

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