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Cylindrical Roller Radial Bearings - Two-Row
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ENGINEERED BEARINGS
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Cylindrical Roller Bearings
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Cylindrical Roller Radial Bearings - Two-Row
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Part Number NNU4948MAW33
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Part Number NNU4948MAW33, Cylindrical Roller Radial Bearings - Two-Row
Additional radial load-carrying capability compared to single-row product.
Designed to ISO/DIN specified interchangeable dimensions.
Sold as complete assembly.
NNU-1
Outer rings with solid ribs.
Lubrication grooves and holes on outer rings.
One solid brass cage.
The radial internal clearance (RIC) for the bearing assembly must be included when ordering the complete assembly.
larger image
larger image
Unit of Measure:
Imperial
Metric
Both
Specifications
·
Bearing Dimensions
·
Mounting Data
·
Lubrication Data
Specifications
Bore d
240
mm
Static Load Rating C
o
1220000
N
274000
lbf
Dynamic Load Rating C
1
1
591000
N
133000
lbf
Geometry Factor C
g
2
0.1650
Thermal Speed Ratings - Oil
1200
rpm
Thermal Speed Ratings - Grease
1100
rpm
1
Based on 1 x 10
6
revolutions L
10
life, for the ISO life calculation method.
2
C
g
factor for bearing without inner ring.
Bearing Dimensions
O.D. D
320
mm
12.5984
in
Width B
80
mm
3.1496
in
DUR/DOR F/E
265
mm
10.4331
in
Mounting Data
Chamfer r
smin
2.1
mm
0.08
in
Chamfer r
1smin
1
2.1
mm
0.080
in
Backing Shaft Diameter d
s
260
mm
10.2400
in
Backing Housing Diameter D
s
299
mm
11.7700
in
1
Based on 1 x 10
6
revolutions L
10
life, for the ISO life calculation method.
Lubrication Data
Lubrication Groove g
12.3
mm
0.48
in
Lubrication Hole Diameter h
6.0
mm
0.24
in
Number of Lubrication Holes
6
Dimension S
1
3.90
mm
0.150
in
1
Permissible axial displacement from normal position of one bearing ring in relation to the other.
MORE IMAGES
·
timken-CRB-NN-Brass-Cage-Large-left-angle-view
·
timken-CRB-NN-Brass-Cage-Large-cutaway-view
·
timken-CRB-NN-Brass-Cage-Large-top-angle-view
VIEW CAD DRAWING
·
3D
·
2D Sales Drawing
·
2D Sectional View
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Catalog and Technical Information - Cylindrical Roller Bearings
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The Timken Company. ©
The Timken Company.
©
The Timken Company.