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NTN 430310 double row tapered roller bearing, 4.0000 in straight bore, inch series. Accommodates combined radial and axial loads in heavy-duty gearboxes and mill drives. Straight bore design simplifies mounting on cylindrical shafts.
MODEL 430310
$1,426.63 Each
Prices are subject to change
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B1
2.5197 in
Bore Type
Round
Bore type
Round
C (in)
2.0276
Configuration
Two
D (in)
4.3307
d (in)
1.9685
Dynamic Load Rating
51000 lbf
Dynamic load rating
51000 lbf
e
0.35
Enclosure
Open
I.D.
50 mm
Material
Through hardened steel
O.D.
90 in
Precision Rating
Class 0
Precision rating
Class 0
r (in)
0.0984
Static Load Rating
68500 lbf
Static load rating
68500 lbf
Style
TDO
Type
Tapered Roller Bearing
Y0
1.91
Y1
1.96
Y2
2.91
Technical Specifications
| Type | Tapered Roller Bearing |
|---|---|
| Bore Type | Round |
| Material | Through Hardened Steel |
| e | 0.35 |
| Y1 | 1.96 |
| Y2 | 2.91 |
| Y0 | 1.91 |
| Style | TDO |
| Precision Rating | Class 0 |
| Configuration | Two |
| Static Load Rating | 68500 lbf305000 N305.00 kN |
| Dynamic Load Rating | 51000 lbf227000 N227.00 kN |
| Enclosure | Open |
Dimensional Specifications
| |
| d | 1.9685 in50.000 mm |
|---|---|
| D | 4.3307 in110.000 mm |
| C | 2.0276 in51.500 mm |
| B1 | 2.5197 in64.000 mm |
| r | 0.0984 in2.500 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 | Boston Gear |
| Model | QC724-20-B5-J |
| Brand | JW Winco |
| Model | 817-5-8-M10X1-B |