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NTN 3821 is an inch-series single-row tapered roller bearing with a straight bore. Designed for radial and axial loads in industrial gearboxes, vehicle hubs, and conveyor systems.
MODEL 3821
This vendor has a minimum order quantity of 2. Order minimum ($) may be applied. Add desired QTY to cart and proceed to checkout to view minimum
$49.41 Each
Prices are subject to change
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
Height
3.375
I.D.
1.625 in
Length
3.375
Material
Carburized Steel
O.D.
3.375 in
Width
0.9375
Technical Specifications
Type | Bearing Cup |
|---|---|
Material | Case Carburized Steel |
Weight | 0.637 lb0.289 kg |
Dimensional Specifications
|
| |
D | 3.3750 in85.725 mm |
|---|---|
Wo | 0.9375 in23.813 mm |
W | 1.1875 in30.163 mm |
r | 0.0500 in1.300 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.
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