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Double Row Cylindrical Roller Bearings
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Item # NN3068
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Item # NN3068, 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
1300
RPM
Limiting Speed - Grease
1100
RPM
Precision
ISO Class 0
Configuration
Two
Oil Hole
w/o Oil Hole
Radial Internal Clearance
CN
Static Load Rating
720000
lbf
3200000
N
3200.00
kN
Dynamic Load Rating
365000
lbf
1620000
N
1620.00
kN
Enclosure
Open
Weight
224.871
lb
102.000
kg
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
13.3858
in
340.000
mm
D
20.4724
in
520.000
mm
B
5.2362
in
133.000
mm
C
5.2362
in
133.000
mm
Ew
18.6220
in
473.000
mm
r
0.1969
in
5.000
mm
da min
14.1732
in
360.000
mm
db min
14.6063
in
371.000
mm
Db min
18.7795
in
477.000
mm
Db max
19.6850
in
500.000
mm
ras max
0.1575
in
4.000
mm
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