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NTN 28521 is an inch series tapered roller bearing cup with a straight bore. Designed for use with a matching cone in separable tapered roller bearing assemblies, it supports combined radial and axial loads in industrial gearboxes, conveyor systems, and vehicle drivetrains.
MODEL 28521
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$31.55 Each
Prices are subject to change
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Brand Minimum Order Quantity: 3
Typically Ships in: 1 day
Returnable:No
Height
3.625
I.D.
2.0625 in
Length
3.625
Material
Carburized Steel
O.D.
3.625 in
Width
0.7813
Technical Specifications
Type |
Bearing Cup |
Material |
Case Carburized Steel |
Weight |
0.538 lb0.244 kg |
Dimensional Specifications
|
|
|
D |
3.6250 in92.075 mm |
Wo |
0.7813 in19.845 mm |
W |
0.9688 in24.607 mm |
r |
0.0300 in0.800 mm |
X |
3.43 in87.0 mm |
Z |
3.27 in83.0 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 | Timken |
| Model | E-TU-TRB-2 7/16-ECO/ECC |
