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NTN 30306 is a single row metric tapered roller bearing with a 30 mm straight bore. It features a stamped steel cage and is designed for combined radial and axial loads in gearboxes, vehicle hubs, and industrial machinery.
MODEL 30306
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$38.81 Each
Prices are subject to change
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
Height
2.835
I.D.
1.1811 in
Length
2.835
Material
Carburized Steel
O.D.
2.8346 in
Width
0.8169
Technical Specifications
| Type | Tapered Roller Bearing |
|---|---|
| Bore Type | Round |
| Material | Case Carburized Steel |
| Limiting Speed - Oil | 7600 RPM |
| Limiting Speed - Grease | 5700 RPM |
| Style | Cone & Cup |
| Precision Rating | Class 0 |
| Configuration | One |
| Lubrication | w/o Oil Hole |
| e (Axial Load Factor) | 0.31 |
| Y2 (Axial Load Factor) | 1.90 |
| Y0 (Axial Load Factor) | 1.05 |
| Static Load Rating | 13700 lbf61000 N61.00 kN |
| Dynamic Load Rating | 13500 lbf60000 N60.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 1.1811 in30.000 mm |
|---|---|
| D | 2.8346 in72.000 mm |
| C | 0.6299 in16.000 mm |
| B | 0.7480 in19.000 mm |
| a (Effective Load Center) | -0.2264 in-5.750 mm |
| T | 0.8169 in20.750 mm |
| r | 0.0600 in1.500 mm |
| R | 0.06 in1.5 mm |
| da | 1.52 in38.5 mm |
| db | 1.57 in40.0 mm |
| Da | 2.50 in63.5 mm |
| Da min | 2.44 in62.0 mm |
| Db | 2.60 in66.0 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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