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Double Row Cylindrical Roller Bearings
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Item # NN3072
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Item # NN3072, Double Row Cylindrical Roller Bearing w/ Cylindrical 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
·
Dimensional Specifications
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Technical Specifications
Type
Cylindrical Roller Bearing
Bore Type
Cylindrical
Material
Hardened Alloy Steel
Cage Material
High Strength, 2 piece, Machined Brass
Limiting Speed - Oil
1200
RPM
Limiting Speed - Grease
1000
RPM
Precision
ISO Class 0
Configuration
Two
Oil Hole
w/o Oil Hole
Radial Internal Clearance
CN
Static Load Rating
740000
lbf
3300000
N
3300.00
kN
Dynamic Load Rating
370000
lbf
1650000
N
1650.00
kN
Enclosure
Open
Operating Temperature Range
-40 to 250
ºF
-40 to 120
ºC
Dimensional Specifications
Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NN - Dimensions
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d
14.1732
in
360.000
mm
D
21.2598
in
540.000
mm
B
5.2756
in
134.000
mm
C
5.2756
in
134.000
mm
Ew
19.4094
in
493.000
mm
r
0.1969
in
5.000
mm
da min
14.9606
in
380.000
mm
db min
15.3937
in
391.000
mm
Db min
19.5669
in
497.000
mm
Db max
20.4724
in
520.000
mm
ras max
0.1575
in
4.000
mm
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