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NTN 48290/48220D+AC4 is an inch series tapered roller bearing set consisting of cone 48290 and double cup 48220D. It features a straight bore, open design, and case carburized steel construction for durability under heavy radial and axial loads. This set is suitable for industrial applications requiring high load capacity and precise axial positioning.
MODEL 48290/48220D+AC4
$1,074.29 Each
Prices are subject to change
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B (in)
5.0000
Bore type
Round
Bore Type
Round
Cone Number
48290
Configuration
Two
Cup Number
48220D
D (in)
7.1875
Dynamic load rating
55500 lbf
Dynamic Load Rating
55500 lbf
e (Axial Load Factor)
0.31
Enclosure
Open
I.D.
5 in
Lubrication
w/o Oil Hole
Material
Case Carburized Steel
O.D.
7.1875 in
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
Precision rating
Class 4
Precision Rating
Class 4
R (in)
0.14
r (in)
0.0300
Static load rating
111000 lbf
Static Load Rating
111000 lbf
Style
TDO
Type
Tapered Roller Bearing
Wi
1.5625 in
Width
2.875
Wo
2.8750 in
Y2 (Axial Load Factor)
1.97
Technical Specifications
| Type | Tapered Roller Bearing |
|---|---|
| Bore Type | Round |
| Material | Case Carburized Steel |
| Style | TDO |
| Precision Rating | Class 4 |
| Cone N / umber | 48290 |
| Cup N / umber | 48220D |
| Configuration | Two |
| Lubrication | w/o Oil Hole |
| e (Axial Load Factor) | 0.31 |
| Y2 (Axial Load Factor) | 1.97 |
| Static Load Rating | 111000 lbf / 495000 N / 495.00 kN |
| Dynamic Load Rating | 55500 lbf / 247000 N / 247.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 ºF / -40 to 120 ºC |
Dimensional Specifications
| B | 5.0000 in / 127.000 mm |
|---|---|
| D | 7.1875 in / 182.563 mm |
| Wo | 2.8750 in / 73.025 mm |
| Wi | 1.5625 in / 39.688 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.
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