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NTN LM742749/LM742710 is an inch series tapered roller bearing set consisting of cone LM742749 and cup LM742710. It features a straight bore, open enclosure, and is constructed from case carburized steel for durability. This single row tapered roller bearing is designed for applications requiring high radial and axial load capacity.
MODEL LM742749/LM742710
$1,200.42 Each
Prices are subject to change
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Returnable:No
a (Effective Load Center)
0.5600 in
B (in)
8.5000
Bore Type
Round
Bore type
Round
Cone Number
LM742749
Configuration
One
Cup Number
LM742710
D (in)
11.2500
Dynamic Load Rating
90000 lbf
Dynamic load rating
90000 lbf
e (Axial Load Factor)
0.48
Enclosure
Open
I.D.
8.5 in
Lubrication
w/o Oil Hole
Material
Case carburized steel
O.D.
11.25 in
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision Rating
Class 4
Precision rating
Class 4
R (in)
0.14
r (in)
0.1300
Static Load Rating
202000 lbf
Static load rating
202000 lbf
Style
Cone & cup
Type
Tapered Roller Bearing
U
9.17 in
V
8.94 in
W
1.8125 in
Wi
1.8125 in
Wo
1.3750 in
X
10.98 in
Y2 (Axial Load Factor)
1.25
Z
10.47 in
Technical Specifications
Type | Tapered Roller Bearing |
Bore Type | Round |
Material | Case Carburized Steel |
Style | Cone & Cup |
Precision Rating | Class 4 |
Cone Number | LM742749 |
Cup Number | LM742710 |
Configuration | One |
Lubrication | w/o Oil Hole |
e (Axial Load Factor) | 0.48 |
Y2 (Axial Load Factor) | 1.25 |
Static Load Rating | 202000 lbf900000 N900.00 kN |
Dynamic Load Rating | 90000 lbf400000 N400.00 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
B | 8.5000 in215.900 mm |
D | 11.2500 in285.750 mm |
Wo | 1.3750 in34.925 mm |
Wi | 1.8125 in46.038 mm |
W | 1.8125 in46.038 mm |
r | 0.1300 in3.300 mm |
R | 0.14 in3.5 mm |
a (Effective Load Center) | 0.5600 in14.200 mm |
U | 9.17 in233.0 mm |
V | 8.94 in227.0 mm |
X | 10.98 in279.0 mm |
Z | 10.47 in266.0 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.
| Brand | Koyo Bearing |
| Model | K32X40X25H |