| model | 3984-3920-B |
| type | bearing |
| Cone Part Number | 3984 |
| Cup Part Number | 3920-B |
| 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 | Flange |
| series | 3900 |
| Inside Diameter | 2.625" |
| Inner Diameter Tolerance | +0.013" to 0 |
| Outer Diameter | 4.4375" |
| Outer Diameter Tolerance | +0.025" to 0 |
| Cone Width | 1.183" |
| Cone Width | +0.076" to -0.254" |
| Cup width | 0.9375" |
| Cup Width | +0.051" to -0.254" |
| Flange outer diameter (D1) | 4.621" |
| Outer ring flange width (C1) | 0.1875" |
| Flange bearing width | 1.1875" |
| Cone back to clearance radius | 0.14" |
| Cup back to cleaning radius | 0.130" |
| Tapered Front Backing Diameter | 2.91" |
| Tapered backing diameter | 3.15" |
| Cup front backing diameter | 4.29" |
| Cage cone front clearance | 0.08" |
| Cage cone back clearance | 0.06" |
| Effective central location | -0.18" |
| Ferrule Material | 51200 Chrome steel |
| Roller material | 51200 Chrome steel |
| Cage Material | steel |
| Dynamic Radial Load | 31200 lbf |
| Static Radial Load | 43000 lbf |
| Dynamic Radial Rating (90 million rpm) (C90) | 8090 lbf |
| Dynamic Thrust Rating (90 million rpm) (Ca90) | 5570 lbf |
| Lubricant | Lubricant Added |
| Temperature Range | -30° to 110 °C |