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NN3960KR

Double-Row Cylindrical Roller Bearings
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Parts Number
NN3960KRE44CC1P4 Double-Row Cylindrical Roller Bearings
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Parts Number

NN3960KRE44CC1P4

Boundary Dimensions

NN: Inner ring rib type Bearing Type
d 300 mm Bore diameter
D 420 mm Outside diameter
B 90 mm Width
r(min.) 3 mm Chamfer Dimension

Basic Load Ratings

Cr 855 kN Basic Dynamic Load Rating
C0r 1800 kN Basic Static Load Rating

Speeds

Grease 1800 min-1 Limiting Speed
Oil (Oil-air) 2300 min-1 Limiting Speed

Dimensions

Ew 388 mm Roller Circumscribed Circle Diameters
s 2.2 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 313 mm Diameter of Shaft Abutment
d1a(min.) 318 mm Diameter of Shaft Abutment
Da(min.) 391 mm Diameter of Housing Abutment
Da(max.) 407 mm Diameter of Housing Abutment
ra(max.) 2.5 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 60 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 20 μm Clearance in Bearings with Cylindrical Bores
CC1(max.) 120 μm Clearance in Bearings with Tapered Bores
CC1(min.) 60 μm Clearance in Bearings with Tapered Bores
CC0(max.) 75 μm Clearance in Bearings with Tapered Bores
CC0(min.) 45 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. 60 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. 30 μm Clearance in Bearings with Tapered Bores

Holes Dimensions

dh 6 mm Hole Diameter
W 12 mm Oil Groove Width
m 4 Number of Holes

Mass

36.2 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NN39
NSK Product Type Super Precision Bearing
Designations NN3960KR

© NSK Ltd.

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