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NTN 31521 single-row inch series tapered roller bearing cup, 3 in bore. Manufactured from case carburized steel for durability and impact resistance. Designed for use with a matching cone in industrial gearboxes, axle housings, and heavy-duty machinery.
MODEL 31521
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$35.53 Each
Prices are subject to change
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
Bearing Type
Bearing cup
I.D.
3 in
Material
Case carburized steel
O.D.
3 in
Width
0.9375
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 | Bunting Bearings |
| Model | BJ4F242816 |