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NTN 643 is an inch-series single-row tapered roller bearing with a straight bore. Designed for radial and axial load combinations, it is commonly used in gearboxes, conveyor systems, and industrial machinery. The bearing features a separable design for easy mounting and dismounting.
MODEL 643
$115.26 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
Height
5.125
I.D.
2.75 in
Length
5.125
O.D.
5.125 in
Width
1.625
Technical Specifications
| Type | Cone |
|---|---|
| Bore Type | Round |
| Material | Case Carburized Steel |
| Static Load Rating | 67000 lbf299000 N299.00 kN |
| Dynamic Load Rating | 48000 lbf214000 N214.00 kN |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
| Y2 (Axial Load Factor) | 1.66 |
| e (Axial Load Factor) | 0.36 |
Dimensional Specifications
| |
| B | 2.7500 in69.850 mm |
|---|---|
| Wi | 1.6250 in41.275 mm |
| R | 0.1400 in3.600 mm |
| U | 3.39 in86.0 mm |
| V | 3.15 in80.0 mm |
| a (Effective Load Center) | -0.4400 in-11.200 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 | Winsmith |
| Model | E35MSFS41240DN |
