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NN3048MBKR

Double-Row Cylindrical Roller Bearings
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Parts Number
NN3048MBKRE44CC9P4 Double-Row Cylindrical Roller Bearings
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Parts Number

NN3048MBKRE44CC9P4

Boundary Dimensions

NN: Inner ring rib type Bearing Type
d 240 mm Bore diameter
D 360 mm Outside diameter
B 92 mm Width
r(min.) 3 mm Chamfer Dimension

Basic Load Ratings

Cr 980 kN Basic Dynamic Load Rating
C0r 1600 kN Basic Static Load Rating

Speeds

Grease 2200 min-1 Limiting Speed
Oil (Oil-air) 2700 min-1 Limiting Speed

Dimensions

Ew 330 mm Roller Circumscribed Circle Diameters
s 3.5 mm Axial Displacement

Abutment and Fillet Dimensions

da(min.) 253 mm Diameter of Shaft Abutment
d1a(min.) 256 mm Diameter of Shaft Abutment
Da(min.) 334 mm Diameter of Housing Abutment
Da(max.) 347 mm Diameter of Housing Abutment
ra(max.) 2.5 mm Radius of Shaft or Housing Fillet

Additional information

CC1(max.) 50 μm Clearance in Bearings with Cylindrical Bores
CC1(min.) 15 μm Clearance in Bearings with Cylindrical Bores
CC1(max.) 100 μm Clearance in Bearings with Tapered Bores
CC1(min.) 50 μm Clearance in Bearings with Tapered Bores
CC0(max.) 65 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. 50 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
99 g/brg Recommended Grease Quantities

Holes Dimensions

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

Mass

30.4 kg Mass(approx.)
CAD
More Information
NSK Product Type2 SP_CRB_DR_NN30
NSK Product Type Super Precision Bearing
Designations NN3048MBKR

© NSK Ltd.

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