Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications12 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | NA4844 | |
| Bore diameter | d | 220 mm |
| Outside diameter | D | 270 mm |
| Width | B | 50 mm |
| Basic dynamic load rating | C | 275 kN |
| Basic static load rating | C0 | 790 kN |
| Fatigue load limit | Pu | 112 kN |
| Reference speed | nref | 1110 r/min |
| Limiting speed | nG | 1980 r/min |
| Mass | ≈m | 6.298 kg |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 120 °C |
Manufacturer Identity4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 393839 | |
| Brand | INA | |
| Base Type | NA4844 | |
| X Life Marking | XL |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Needle roller bearing NA..-XL, single row, with inner ring, outer ring with 2 bords | |
| Short Description | Needle roller bearing |
Technical Data13 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 220 mm | |
| Outside Diamater (D) | 270 mm | |
| Total Width (B) | 50 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 275,000 N | |
| Basic Static Load Rating, Radial (C0R) | 790,000 N | |
| Raceway Diameter Inner Ring (F) | 240 mm | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Operating Temperature Max. (Tmax) | 120 °C | |
| Limiting Speed (Limiting Spe) | 1,980 1/min | |
| Reference Speed (Nϑr) | 1,110 1/min | |
| Axial Displacement (S) | 1.5 mm | |
| Minimum Chamfer Dimension (Rmin) | 1.5 mm | |
| Fatigue Load Limit, Radial (Cur) | 112,000 N |