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NN49/670K

Double-Row Cylindrical Roller Bearings
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Parts Number
NN49/670KCC1P4 Double-Row Cylindrical Roller Bearings
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Parts Number

NN49/670KCC1P4

Boundary Dimensions

NN: Inner ring rib type Bearing Type
d 670 mm Bore diameter
D 900 mm Outside diameter
B 230 mm Width
r(min.) 6 mm Chamfer Dimension

Basic Load Ratings

Cr 4150 kN Basic Dynamic Load Rating
C0r 11500 kN Basic Static Load Rating

Speeds

Grease 700 min-1 Limiting Speed
Oil (Oil-air) 900 min-1 Limiting Speed

Dimensions

Ew 838 mm Roller Circumscribed Circle Diameters
s 6.3 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 696 mm Diameter of Shaft Abutment
d1a(min.) 715 mm Diameter of Shaft Abutment
Da(min.) 841 mm Diameter of Housing Abutment
Da(max.) 874 mm Diameter of Housing Abutment
ra(max.) 5 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 130 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 30 μm Clearance in Bearings with Cylindrical Bores
CC1(max.) 260 μm Clearance in Bearings with Tapered Bores
CC1(min.) 130 μm Clearance in Bearings with Tapered Bores
CC0(max.) 160 μm Clearance in Bearings with Tapered Bores
CC0(min.) 90 μm Clearance in Bearings with Tapered Bores
CC9(max.) 130 μm Clearance in Bearings with Tapered Bores
CC9(min.) 60 μm Clearance in Bearings with Tapered Bores

Holes Dimensions

dh 12 mm Hole Diameter
W 20 mm Oil Groove Width
m 4 Number of Holes

Mass

419 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NN49
NSK Product Type Super Precision Bearing
Designations NN49/670K

© NSK Ltd.

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