| model | LM121349-LM121310 |
| type | bearing |
| Cone Part Number | LM121349 |
| Cup Part Number | LM121310 |
| 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 | LM121300 |
| Inside Diameter | 4.2116" |
| Inner Diameter Tolerance | +0.025" to 0 |
| Outer Diameter | 5.7864" |
| Outer Diameter Tolerance | +0.025" to 0 |
| Cone Width | 1.1024" |
| Cone Width | +0.076" to -0.254" |
| Cup width | 0.9449" |
| Cup Width | +0.051" to -0.254" |
| Width | 1.122" |
| Width Tolerance | +0.356" to-0.254" |
| Cone back to clearance radius | 0.09" |
| Cup back to cleaning radius | 0.090" |
| Tapered Front Backing Diameter | 5.12" |
| Tapered backing diameter | 4.57" |
| Cup front backing diameter | 5.63" |
| Cup backing diameter | 5.43" |
| Cage cone front clearance | 0.12" |
| Cage cone back clearance | 0" |
| Effective central location | -0.15" |
| Ferrule Material | 51200 Chrome steel |
| Roller material | 51200 Chrome steel |
| Cage Material | steel |
| Dynamic Radial Load | 38400 lbf |
| Static Radial Load | 64100 lbf |
| Dynamic Radial Rating (90 million rpm) (C90) | 9960 lbf |
| Dynamic Thrust Rating (90 million rpm) (Ca90) | 4590 lbf |
| Lubricant | Lubricant Added |
| Temperature Range | -30° to 110 °C |