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The NTN 56425/56650 is an inch series tapered roller bearing set with a straight bore and open enclosure. Constructed from case carburized steel, this single row bearing is designed for applications requiring high radial and axial load capacity in a compact footprint.
MODEL 56425/56650
$136.99 Each
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Returnable:No
a (Effective Load Center)
0.0800 in
B (in)
4.2500
Bore Type
Round
Bore type
Round
Cone Number
56425
Configuration
One
Cup Number
56650
D (in)
6.5000
Dynamic Load Rating
47000 lbf
Dynamic load rating
47000 lbf
e (Axial Load Factor)
0.50
Enclosure
Open
I.D.
4.25 in
Lubrication
w/o Oil Hole
Material
Case carburized steel
O.D.
6.5 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision Rating
Class 2
Precision rating
Class 2
r (in)
0.1300
R (in)
0.14
Static Load Rating
80000 lbf
Static load rating
80000 lbf
Style
Cone & cup
Type
Tapered Roller Bearing
U
4.84 in
V
4.61 in
W
1.4375 in
Wi
1.4375 in
Wo
1.0625 in
X
6.26 in
Y2 (Axial Load Factor)
1.21
Z
5.87 in
Technical Specifications
Type | Tapered Roller Bearing |
|---|---|
Bore Type | Round |
Material | Case Carburized Steel |
Style | Cone & Cup |
Precision Rating | Class 2 |
Cone Number | 56425 |
Cup Number | 56650 |
Configuration | One |
Lubrication | w/o Oil Hole |
e (Axial Load Factor) | 0.50 |
Y2 (Axial Load Factor) | 1.21 |
Static Load Rating | 80000 lbf355000 N355.00 kN |
Dynamic Load Rating | 47000 lbf209000 N209.00 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
B | 4.2500 in107.950 mm |
|---|---|
D | 6.5000 in165.100 mm |
Wo | 1.0625 in26.988 mm |
Wi | 1.4375 in36.512 mm |
W | 1.4375 in36.512 mm |
r | 0.1300 in3.300 mm |
R | 0.14 in3.5 mm |
a (Effective Load Center) | 0.0800 in2.000 mm |
U | 4.84 in123.0 mm |
V | 4.61 in117.0 mm |
X | 6.26 in159.0 mm |
Z | 5.87 in149.0 mm |
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
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