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NTN LM12749/LM12710 inch series tapered roller bearing set comprising cone LM12749 and cup LM12710. Straight bore, open design, case carburized steel construction for durability under heavy radial and axial loads. Suitable for applications requiring high load capacity and precise shaft alignment.
MODEL LM12749/LM12710
$11.99 Each
Prices are subject to change
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Returnable:No
a (Effective Load Center)
-0.2100 in
B (in)
0.8656
Bore Type
Round
Bore type
Round
Cone Number
LM12749
Configuration
One
Cup Number
LM12710
D (in)
1.7810
Dynamic Load Rating
6650 lbf
Dynamic load rating
6650 lbf
e (Axial Load Factor)
0.31
Enclosure
Open
I.D.
0.8656 in
Lubrication
w/o Oil Hole
Material
Case carburized steel
O.D.
1.781 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)
0.05
r (in)
0.0500
Static Load Rating
7650 lbf
Static load rating
7650 lbf
Style
Cone & cup
Type
Tapered Roller Bearing
U
1.08 in
V
1.02 in
W
0.6100 in
Wi
0.6550 in
Width
0.655
Wo
0.4750 in
Y0 (Axial Load Factor)
1.08
Y2 (Axial Load Factor)
1.96
Technical Specifications
Type | Tapered Roller Bearing |
Bore Type | Round |
Material | Case Carburized Steel |
Style | Cone & Cup |
Precision Rating | Class 2 |
Cone Number | LM12749 |
Cup Number | LM12710 |
Configuration | One |
Lubrication | w/o Oil Hole |
e (Axial Load Factor) | 0.31 |
Y2 (Axial Load Factor) | 1.96 |
Y0 (Axial Load Factor) | 1.08 |
Static Load Rating | 7650 lbf34000 N34.00 kN |
Dynamic Load Rating | 6650 lbf29600 N29.60 kN |
Enclosure | Open |
Weight | 0.256 lb0.116 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
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 | NTN Bearing |
| Model | L420449/L420410 |