| model | A4044-A4138 |
| type | bearing |
| Cone Part Number | A4044 |
| Cup Part Number | A4138 |
| Metering System | Imperial |
| Bearing Type | Roller |
| Roller Bearing Type | Tapered roller |
| Load Direction | Radial force and axial force |
| Structure | Single Column |
| Seal Type | Open |
| Outer ring type | Standard Type |
| series | A4000 |
| Inside Diameter | 0.4375" |
| Inner Diameter Tolerance | +0.013" to 0 |
| Outer Diameter | 1.3775" |
| Outer Diameter Tolerance | +0.025" to 0 |
| Cone Width | 0.4326" |
| Cone Width | +0.076" to -0.254" |
| Cup width | 0.3437" |
| Cup Width | +0.051" to -0.254" |
| Width | 0.433" |
| Width Tolerance | +0.203" to 0 |
| Cone back to clearance radius | 0.050" |
| Cup back to cleaning radius | 0.050" |
| Tapered Front Backing Diameter | 0.61" |
| Tapered backing diameter | 0.69" |
| Cup front backing diameter | 1.28" |
| Cup backing diameter | 1.14" |
| Cage cone front clearance | 0.07" |
| Cage cone back clearance | 0" |
| Effective central location | -0.1" |
| Ferrule Material | 51200 Chrome steel |
| Roller material | 51200 Chrome steel |
| Cage Material | steel |
| Dynamic Radial Load | 2960 lbf |
| Static Radial Load | 2580 lbf |
| Dynamic Radial Rating (90 million rpm) (C90) | 767 lbf |
| Dynamic Thrust Rating (90 million rpm) (Ca90) | 594 lbf |
| Lubricant | Lubricant Added |
| Temperature Range | -30° to 110 °C |