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NNU4964KR

Double-Row Cylindrical Roller Bearings
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Parts Number
NNU4964KRE44CC0P5 Double-Row Cylindrical Roller Bearings
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Parts Number

NNU4964KRE44CC0P5

Boundary Dimensions

NNU: Outer ring rib type Bearing Type
d 320 mm Bore diameter
D 440 mm Outside diameter
B 118 mm Width
r(min.) 3 mm Chamfer Dimension

Basic Load Ratings

Cr 1260 kN Basic Dynamic Load Rating
C0r 3050 kN Basic Static Load Rating

Speeds

Grease 1800 min-1 Limiting Speed
Oil (Oil-air) 2100 min-1 Limiting Speed

Dimensions

Ew 356 mm Roller Circumscribed Circle Diameters
s 2.5 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 333 mm Diameter of Shaft Abutment
d1a(min.) 338 mm Diameter of Shaft Abutment
Da(max.) 427 mm Diameter of Housing Abutment
ra(max.) 2.5 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 65 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 20 μm Clearance in Bearings with Cylindrical Bores
CC1(max.) 135 μm Clearance in Bearings with Tapered Bores
CC1(min.) 65 μm Clearance in Bearings with Tapered Bores
CC0(max.) 80 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. 65 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

50.3 kg Mass(approx.)
Designations Basic Load Ratings Radial Internal Clearance Accuracy Limiting Speeds Mass
Cr
 C0r
 min
 max
 Grease
(min-1)		 Oil (Oil-air)
(min-1)
(kg)
NNU4964KRE44CC0P5 1260 3050 P5: ISO Class 5 1800 2100 50.3

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CAD
More Information
NSK Product Type2 SP_CRB_DR_NNU
NSK Product Type Super Precision Bearing
Designations NNU4964KR

© NSK Ltd.

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