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NTN RNA4906LL is a machined ring needle roller bearing without inner ring from the RNA49 series. It has a 30 mm bore and is double sealed for contaminant protection. Designed for compact radial load applications where shaft surface serves as the inner raceway.
MODEL RNA4906LL
$73.28 Each
Prices are subject to change
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Returnable:No
C (in)
0.6693
Cage Material
Steel
Cage material
Steel
Configuration
One
D (in)
1.8504
Da max
1.4961 in
Db max
1.7717 in
Dynamic Load Rating
4050 lbf
Dynamic load rating
4050 lbf
Enclosure
Double Sealed
Fw
1.3780 in
Fw Tolerance
0.041/0.025 mm
I.D.
35 mm
Limiting Speed - Grease
5500 RPM
Limiting speed - grease
5500 RPM
Material
High carbon chrome steel
O.D.
47 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0118
ras max
0.0118 in
Roller Type
Needle
Roller type
Needle
Static Load Rating
6150 lbf
Static load rating
6150 lbf
Type
Needle Roller Bearing
Technical Specifications
| Type | Needle Roller Bearing |
|---|---|
| Roller Type | Needle |
| Configuration | One |
| Material | High Carbon Chrome Steel |
| Cage Material | Steel |
| Limiting Speed - Grease | 5500 RPM |
| Precision | ISO Class 0 |
| Enclosure | Double Sealed |
| Static Load Rating | 6150 lbf27400 N27.40 kN |
| Dynamic Load Rating | 4050 lbf18000 N18.00 kN |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| Fw | 1.3780 in35.000 mm |
|---|---|
| Fw Tolerance | 0.041/0.025 mm |
| D | 1.8504 in47.000 mm |
| C | 0.6693 in17.000 mm |
| r | 0.0118 in0.300 mm |
| Da max | 1.4961 in38.000 mm |
| Db max | 1.7717 in45.000 mm |
| ras max | 0.0118 in0.300 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-773366 |