| model | 388TD-383X |
| type | bearing |
| Cone Part Number | 388TD |
| Cup Part Number | 383X |
| Metering System | Imperial |
| Bearing Type | Roller |
| Roller Bearing Type | Tapered roller |
| Load Direction | Radial force and axial force |
| Structure | Double row |
| Seal Type | Open |
| Outer ring type | Standard Type |
| series | 385 |
| Inside Diameter | 2.2651" |
| Inner Diameter Tolerance | +0.013" to 0 |
| Outer Diameter | 3.937" |
| Outer Diameter Tolerance | +0.025" to 0 |
| Double Cone Width | 2.094" |
| Double Cone Width | +0.076" to -0.254" |
| Cup width | 0.875" |
| Cup Width | +0.051" to -0.254" |
| Bearing width across cup body | 2.3659" |
| Bearing width across cup | +0.203" to 0 |
| Cone back to clearance radius | 0.03" |
| Cup back to cleaning radius | 0.05" |
| Cup backing diameter | 3.50" |
| Dynamic Radial Load | 33600 lbf |
| Ferrule Material | 51200 Chrome steel |
| Roller material | 51200 Chrome steel |
| Cage Material | steel |
| Dynamic Radial Rating (90 million revolutions in two columns) | 5010 lbf |
| Dynamic Thrust Rating (90 million rpm) (Ca90) | 3040 lbf |
| Dynamic Radial Rating (90 million revolutions in two columns) | 8720 lbf |
| Lubricant | Lubricant Added |
| Temperature Range | -30° to 110 °C |
| ABEC Standard | ABEC-1 |
| Clearance Range | Standard (applicable to C3/C4/C5) |
| RoHS Standard | Conform |
| REACH Standard | Conform |
| Weight | 3.7 lb |