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NTN 67790/67720D+AC180 is an inch series tapered roller bearing double cone assembly with a straight bore. This open bearing features case carburized steel construction for durability in heavy-duty industrial applications such as gearboxes and axle housings.
MODEL 67790/67720D+AC180
$3,091.70 Each
Prices are subject to change
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Returnable:No
B (in)
7.0000
Bore Type
Round
Bore type
Round
Cone Number
67790
Configuration
Two
Cup Number
67720D
D (in)
9.7500
Dynamic Load Rating
83000 lbf
Dynamic load rating
83000 lbf
e (Axial Load Factor)
0.44
Enclosure
Open
Lubrication
w/o Oil Hole
Material
Case carburized steel
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
r (in)
0.0300
R (in)
0.14
Static Load Rating
175000 lbf
Static load rating
175000 lbf
Style
Cone & cup
Type
Tapered Roller Bearing
Wi
2.0313 in
Wo
3.3125 in
Y2 (Axial Load Factor)
1.36
Technical Specifications
| Type | Tapered Roller Bearing |
|---|---|
| Bore Type | Round |
| Material | Case Carburized Steel |
| Style | Cone & Cup |
| Cone N / umber | 67790 |
| Cup N / umber | 67720D |
| Configuration | Two |
| Lubrication | w/o Oil Hole |
| e (Axial Load Factor) | 0.44 |
| Y2 (Axial Load Factor) | 1.36 |
| Static Load Rating | 175000 lbf / 780000 N / 780.00 kN |
| Dynamic Load Rating | 83000 lbf / 370000 N / 370.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 ºF / -40 to 120 ºC |
Dimensional Specifications
| B | 7.0000 in / 177.800 mm |
|---|---|
| D | 9.7500 in / 247.650 mm |
| Wo | 3.3125 in / 84.138 mm |
| Wi | 2.0313 in / 51.595 mm |
| r | 0.0300 in / 0.800 mm |
| R | 0.14 in / 3.5 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 | MROSupply Fasteners |
| Model | FSTPCK-727125 |