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Item # NN4934
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Item # NN4934, 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
2900
RPM
Limiting Speed - Grease
2500
RPM
Precision
ISO Class 0
Configuration
Two
Oil Hole
w/o Oil Hole
Radial Internal Clearance
CN
Static Load Rating
172000
lbf
765000
N
765.00
kN
Dynamic Load Rating
81000
lbf
360000
N
360.00
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
6.6929
in
170.000
mm
D
9.0551
in
230.000
mm
B
2.3622
in
60.000
mm
C
2.3622
in
60.000
mm
Ew
8.5236
in
216.500
mm
r
0.0787
in
2.000
mm
da min
7.0472
in
179.000
mm
db min
7.2441
in
184.000
mm
Db min
8.6024
in
218.500
mm
Db max
8.7008
in
221.000
mm
ras max
0.0787
in
2.000
mm
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