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FAG
NNU4948-S-K-M-SP
Cylindrical roller bearing NNU4948-S-K-M-SP
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Main Dimensions & Performance Data
d
240 mm
Bore diameter
D
320 mm
Outside diameter
B
80 mm
Width
Cr
530,000 N
Basic dynamic load rating, radial
C0r
1,210,000 N
Basic static load rating, radial
Cur
138,000 N
Fatigue load limit, radial
nG Grease
2,400 1/min
Limiting speed for grease lubrication
nG Oil
2,800 1/min
Limiting speed for oil lubrication
≈m
25.6 kg
Weight

Mounting dimensions
da
263 mm
diameter shaft shoulder
h12
diameter shaft shoulder tolerance
Da
299 mm
diameter of housing shoulder
H12
diameter of housing shoulder tolerance
ra1 max
2.1 mm
Maximum recess radius

Dimensions
r1 min
2.1 mm
Minimum chamfer dimension
F
265 mm
Raceway diameter inner ring
ns
12.2 mm
Width of lubricating groove
ds
6.3 mm
Diameter lubrication hole
s
4.3 mm
Axial displacement

Temperature range
Tmin
-30 °C
Operating temperature min.
Tmax
150 °C
Operating temperature max.

Your current product variant
CageMBrass Cage
Tolerance classSPtolerance class SP
Bore typeKTapered, taper 1:12
Locating Feature , bearing outer ringSLubrication holes and lubrication groove in outer ring
Radial internal clearanceC1 (Group 1)Internal clearance smaller than C2
Number of rolling element rows2Double-row design
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