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Double Row Cylindrical Roller Bearings
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Double Row Cylindrical Roller Bearings
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Item # NNU4944
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Item # NNU4944, Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU
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
2200
RPM
Limiting Speed - Grease
1900
RPM
Precision
ISO Class 0
Configuration
Two
Tolerance
ISO Class 0 (RBEC 1)
Oil Hole
w/o Oil Hole
Radial Internal Clearance
CN
Static Load Rating
292000
lbf
1300000
N
1300.00
kN
Dynamic Load Rating
132000
lbf
585000
N
585.00
kN
Enclosure
Open
Weight
37.258
lb
16.900
kg
Operating Temperature Range
-40 to 250
ºF
-40 to 120
ºC
Dimensional Specifications
Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NNU - Dimensions
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d
8.6614
in
220.000
mm
D
11.8110
in
300.000
mm
B
3.1496
in
80.000
mm
C
3.1496
in
80.000
mm
Fw
9.6457
in
245.000
mm
r
0.0827
in
2.100
mm
da min
9.0945
in
231
mm
db min
9.3701
in
238.000
mm
Da max
11.378
in
289
mm
Db min
11.1811
in
284.000
mm
Db max
11.3780
in
289.000
mm
ras max
0.0787
in
2.000
mm
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