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NNU4952MBKR

Double-Row Cylindrical Roller Bearings
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Parts Number
NNU4952MBKRCC9P4Y Double-Row Cylindrical Roller Bearings
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Parts Number

NNU4952MBKRCC9P4Y

Boundary Dimensions

NNU: Outer ring rib type Bearing Type
d 260 mm Bore diameter
D 360 mm Outside diameter
B 100 mm Width
r(min.) 2.1 mm Chamfer Dimension

Basic Load Ratings

Cr 1070 kN Basic Dynamic Load Rating
C0r 2100 kN Basic Static Load Rating

Speeds

Grease 2100 min-1 Limiting Speed
Oil (Oil-air) 2600 min-1 Limiting Speed

Dimensions

Ew 289 mm Roller Circumscribed Circle Diameters
s 2.4 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 271 mm Diameter of Shaft Abutment
d1a(min.) 275 mm Diameter of Shaft Abutment
Da(max.) 349 mm Diameter of Housing Abutment
ra(max.) 2 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 55 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 20 μm Clearance in Bearings with Cylindrical Bores
CC1(max.) 110 μm Clearance in Bearings with Tapered Bores
CC1(min.) 55 μm Clearance in Bearings with Tapered Bores
CC0(max.) 70 μm Clearance in Bearings with Tapered Bores
CC0(min.) 40 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. 55 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. 25 μm Clearance in Bearings with Tapered Bores
88 g/brg Recommended Grease Quantities

Holes Dimensions

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

Mass

28.3 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NNU
NSK Product Type Super Precision Bearing
Designations NNU4952MBKR

© NSK Ltd.

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