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Machined needle roller bearing, 22 mm roller bore x 30 mm outside diameter x 23 mm width, heavy section outer ring, 21.1 kN dynamic, 29 kN static.
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| MFR / Brand | INA |
|---|---|
| MPN | RNA6903-XL |
| GTIN | 035373110629 |
| Model | RNA6903XL |
| Bearing Type | Needle Roller Bearing, Open |
| ID | 22 mm |
| OD | 30 mm |
| Width | 23 mm |
| Material | Bearing Steel |
|---|---|
| Series | RNA69 |
| Condition | New |
| Base Number | RNA6903 |
| Mpn Variants | RNA6903-XL; RNA6903XL; RNA 6903 XL; RNA6903; NA6903; RNA-6903 |
| Compatible With Replaces | Inner ring for a soft shaft: INA IR22x30x23 |
| Precision Class | RBEC 1 / P0 |
| Min Temp | -30 °C |
| Dynamic Load Rating | 21,100 N |
| Static Load Rating | 29,000 N |
| Rolling Elements | Needle Roller |
| Max Temp | 120 °C |
| Item Weight | 0.043 kg (0.09 lb) |
| Limiting Speed | 20,000 rpm |
| Number Of Rows | 2 |
| Bore Type | Straight |
| Lubricant | Grease or oil |
| Harmonization Code | 8482.40.00.00 |
| Bearing Material | Chrome steel |
| Part Number | RNA6903-XL |
| Cross Reference 1 | Koyo RNA6903 |
|---|
INA RNA6903-XL is a machined needle roller bearing with a heavy-section outer ring. Bore Diameter: 22 mm, measured over the needle roller complement. Outside Diameter: 30 mm. Overall Width: 23 mm. Rolling Elements: Needle Roller. Number Of Rows: 2. Closure Type: Open. Bearing Material: Chrome steel. Item Weight: 0.043 kg (0.09 lb). GTIN: 035373110629.
RNA — Needle roller bearing supplied as an outer ring with the needle roller and cage assembly. The rollers run directly on the shaft, so the shaft seat is the raceway and has to be hardened and ground.
69 — The 69 dimension series: a heavy-section outer ring in a compact outside diameter.
03 — Size code within the series.
XL — Schaeffler’s current generation of the design.
Dynamic Load Rating: 21,100 N. Static Load Rating: 29,000 N. Limiting Speed: 20,000 rpm. Reference Speed: 10,500 rpm. Fatigue load limit, radial: 5,200 N. Lubricant: grease or oil. Operating temperature range: -30 °C to +120 °C.
A needle roller carries a very high radial load for its cross-section because the long thin rollers spread contact over a wide area. That is why a 30 mm outside diameter here reaches 21,100 N dynamic. Static above dynamic is normal for the type.
Series: RNA69. Base Number: RNA6903.
Shaft seat diameter 22 mm, hardened and ground, which is the raceway for the rollers. Outer ring width 23 mm. Minimum chamfer dimension 0.3 mm.
The matching inner ring for this size, where a soft shaft is used, is the INA IR22x30x23.
Unit Quantity: 1 Pc. Outer ring with needle roller and cage assembly.
Same-envelope equivalents: IKO RNA4903 in the corresponding series and Koyo RNA6903. Cross-references on machined needle rollers are deliberately few: the RNA69 section is not a nine-way interchange family, and the closest numbers from other makers differ in roller length and ring section.
Searchable forms of the number: RNA6903-XL, RNA6903XL, RNA 6903 XL, RNA6903, NA6903, RNA-6903.
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