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NTN JM738249/JM738210 is an inch series tapered roller bearing assembly consisting of cone JM738249 and cup JM738210. It features a straight bore, open design, and case carburized steel construction for durability. This single row tapered roller bearing is suitable for moderate to heavy radial and axial loads in industrial gearboxes and axle applications.
MODEL JM738249/JM738210
$949.47 Each
Prices are subject to change
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Returnable:No
a (Effective Load Center)
0.4300 in
B (in)
7.4803
Bore Type
Round
Bore type
Round
Cone Number
JM738249
Configuration
One
Cup Number
JM738210
D (in)
10.2362
Dynamic Load Rating
89000 lbf
Dynamic load rating
89000 lbf
e (Axial Load Factor)
0.48
Enclosure
Open
I.D.
7.4803 in
Lubrication
w/o Oil Hole
Material
Case carburized steel
O.D.
10.2362 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision Rating
Class N
Precision rating
Class N
R (in)
0.12
r (in)
0.1000
Static Load Rating
181000 lbf
Static load rating
181000 lbf
Style
Cone & cup
Type
Tapered Roller Bearing
U
8.11 in
V
7.87 in
W
1.8110 in
Wi
1.7323 in
Width
1.811
Wo
1.4370 in
X
9.92 in
Y2 (Axial Load Factor)
1.26
Z
9.53 in
Technical Specifications
Type | Tapered Roller Bearing |
|---|---|
Bore Type | Round |
Material | Case Carburized Steel |
Style | Cone & Cup |
Precision Rating | Class N |
Cone Number | JM738249 |
Cup Number | JM738210 |
Configuration | One |
Lubrication | w/o Oil Hole |
e (Axial Load Factor) | 0.48 |
Y2 (Axial Load Factor) | 1.26 |
Static Load Rating | 181000 lbf805000 N805.00 kN |
Dynamic Load Rating | 89000 lbf395000 N395.00 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
|
| |
B | 7.4803 in190.000 mm |
|---|---|
D | 10.2362 in260.000 mm |
Wo | 1.4370 in36.500 mm |
Wi | 1.7323 in44.000 mm |
W | 1.8110 in46.000 mm |
r | 0.1000 in2.500 mm |
R | 0.12 in3.0 mm |
a (Effective Load Center) | 0.4300 in10.900 mm |
U | 8.11 in206.0 mm |
V | 7.87 in200.0 mm |
X | 9.92 in252.0 mm |
Z | 9.53 in242.0 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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