SKF NA4904 needle roller bearing (machined rings). Needle roller bearing with machined inner and outer rings (NA48xx, NA49xx, NA69xx, RNA48xx, RNA49xx, RNA69xx per ISO 3245 / DIN 617). Ideal for high radial load in the smallest possible radial section — universal-joint yokes, camshaft supports, transmission planetary pinions.
| Type | Needle roller bearing (machined rings) |
| Designation | SKF NA4904 |
| Bore d | 20 mm |
| HS code | 8482.40 |
| Bore diameter | 20 mm |
| Outside diameter | 37 mm |
| Width | 17 mm |
| Basic dynamic load rating | 25 kN |
| Basic static load rating | 28.5 kN |
| Reference speed | 15000 r/min |
| Limiting speed | 17000 r/min |
| SKF performance class | SKF Explorer |
| Bearing part | Complete bearing |
| Number of rows | 1 |
| Outer ring type | Machined (solid) |
| Aligning feature | Without |
| Cage | Sheet metal |
| Number of flanges, outer ring | 2 |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Material, bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | With |
| Indicative carbon footprint for new product | 0.28 kg CO2e |
| Product net weight | 0.075 kg |
| eClass code | 23-05-09-03 |
| UNSPSC code | 31171512 |
| Material | As declared by SKF designation suffix |
| Temperature range | Per SKF product data |
| Primary standard | SKF designation convention (see description for governing ISO / DIN) |
| MOQ | 1 |
Interchange with peer OEM equivalents on identical boundary plan and execution — confirm cage, clearance, sealing and precision-class suffix before substitution.