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The NTN 28680 is an inch-series tapered roller bearing cone with a straight bore. Designed for use with a matching cup, it handles combined radial and axial loads in gearboxes, axle housings, and industrial drives.
MODEL 28680
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$60.67 Each
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
Height
3.844
I.D.
2.1875 in
Length
3.844
O.D.
3.8125 in
Width
0.9688
Technical Specifications
Type | Cone |
|---|---|
Bore Type | Round |
Material | Case Carburized Steel |
Static Load Rating | 28800 lbf128000 N128.00 kN |
Dynamic Load Rating | 19900 lbf88500 N88.50 kN |
| 1.102 lb0.500 kg | |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Y2 (Axial Load Factor) | 1.49 |
e (Axial Load Factor) | 0.40 |
Dimensional Specifications
| |
B | 2.1875 in55.563 mm |
|---|---|
Wi | 0.9688 in24.608 mm |
R | 0.1400 in3.600 mm |
U | 2.68 in68.0 mm |
V | 2.44 in62.0 mm |
a (Effective Load Center) | -0.1300 in-3.300 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.