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Double Row Cylindrical Roller Bearings
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Double Row Cylindrical Roller Bearings
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Item # NN3020K
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Item # NN3020K, Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NN
The rollers in the NN type bearing are guided by the ribs of the inner ring.
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Unit of Measure:
Imperial
Metric
Both
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Technical Specifications
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Dimensional Specifications
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Technical Specifications
Type
Cylindrical Roller Bearing
Bore Type
Tapered
Material
Hardened Alloy Steel
Cage Material
High Strength, 2 piece, Machined Brass
Limiting Speed - Oil
4800
RPM
Limiting Speed - Grease
4000
RPM
Taper
1:12
Precision
ISO Class 0
Configuration
Two
Oil Hole
w/o Oil Hole
Radial Internal Clearance
CN
Static Load Rating
57500
lbf
256000
N
256.00
kN
Dynamic Load Rating
34500
lbf
153000
N
153.00
kN
Enclosure
Open
Operating Temperature Range
-40 to 250
ºF
-40 to 120
ºC
Dimensional Specifications
Double Row Cylindrical Roller Bearing w/ Tapered Bore - Type NN - Dimensions
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d
3.9370
in
100.000
mm
D
5.9055
in
150.000
mm
B
1.4567
in
37.000
mm
C
1.4567
in
37.000
mm
Ew
5.3937
in
137.000
mm
r
0.0591
in
1.500
mm
da min
4.2520
in
108.000
mm
db min
4.3701
in
111.000
mm
Da max
5.4724
in
139.000
mm
Db min
5.4724
in
139.000
mm
Db max
5.5906
in
142.000
mm
ras max
0.0591
in
1.500
mm
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