Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications10 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | NA4904 | |
| Bore diameter | d | 20 mm |
| Outside diameter | D | 37 mm |
| Width | B | 18 mm |
| Basic dynamic load rating | C | 19.5 kN |
| Basic static load rating | C0 | 19.9 kN |
| Fatigue load limit | Pu | 3.8 kN |
| Mass | ≈m | 0.079 kg |
| Minimum operating temperature | Tmin | -20 °C |
| Maximum operating temperature | Tmax | 100 °C |
Manufacturer Identity5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 393214 | |
| Brand | INA | |
| Base Type | NA4904 | |
| Old Designation | ["NA4904-2RSR"] | |
| X Life Marking | XL |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Needle roller bearings NA49..-2RSR, dimension series 49, lip seals on both sides | |
| Short Description | Needle roller bearing |
Technical Data12 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 20 mm | |
| Outside Diamater (D) | 37 mm | |
| Width Inner Ring (B) | 18 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 19,500 N | |
| Basic Static Load Rating, Radial (C0R) | 19,900 N | |
| Raceway Diameter Inner Ring (F) | 25 mm | |
| Operating Temperature Min. (Tmin) | -20 °C | |
| Limiting Speed For Grease Lubrication (Ng Grea) | 10,100 1/min | |
| Operating Temperature Max. (Tmax) | 100 °C | |
| Width, Outer Ring (C) | 17 mm | |
| Minimum Chamfer Dimension (Rmin) | 0.3 mm | |
| Fatigue Load Limit, Radial (Cur) | 3,800 N |
