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NTN 78551 inch series single-row tapered roller bearing with straight bore. Designed for combined radial and axial loads in gearboxes, wheel hubs, and industrial machinery. Offers high load capacity and durability.
MODEL 78551
$83.92 Each
Prices are subject to change
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Returnable:No
Height
5.513
I.D.
2.5591 in
Length
5.513
Material
Carburized Steel
O.D.
5.513 in
Width
0.926
Technical Specifications
Type | Bearing Cup |
|---|---|
Material | Case Carburized Steel |
Dimensional Specifications
|
| |
D | 5.5130 in140.030 mm |
|---|---|
Wo | 0.9260 in23.520 mm |
W | 1.4375 in36.512 mm |
r | 0.0900 in2.300 mm |
X | 5.20 in132.0 mm |
Z | 4.61 in117.0 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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