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NTN RNA4908R is a machined ring needle roller bearing without inner ring, featuring a 40 mm bore. This open design uses a steel cage and is constructed from high carbon chrome steel. It is suitable for applications requiring high radial load capacity in a compact cross-section.
MODEL RNA4908R
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$64.74 Each
Prices are subject to change
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
Bearing Type
Needle roller bearing
Cage
Steel
Enclosure
Open
Height
2.441
I.D.
48 mm
Length
2.441
Material
High carbon chrome steel
O.D.
62 mm
Width
0.8661
Technical Specifications
Type | Needle Roller Bearing |
Roller Type | Needle |
Configuration | One |
Material | High Carbon Chrome Steel |
Cage Material | Steel |
Limiting Speed - Oil | 8500 RPM |
Limiting Speed - Grease | 5500 RPM |
Precision | ISO Class 0 |
Enclosure | Open |
Static Load Rating | 15000 lbf66500 N66.50 kN |
Dynamic Load Rating | 9800 lbf43500 N43.50 kN |
Weight | 0.307 lb0.139 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
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 | Bondhus |
| Model | 28249 |