 
                 
                | model | 2688-2631 | 
| type | bearing | 
| Cone Part Number | 2688 | 
| Cup Part Number | 2631 | 
| 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 | 2600 | 
| Inside Diameter | 1.0625" | 
| Inner Diameter Tolerance | +0.013" to 0 | 
| Outer Diameter | 2.615" | 
| Outer Diameter Tolerance | +0.025" to 0 | 
| Cone Width | 1.0013" | 
| Cone Width | +0.076" to -0.254" | 
| Cup width | 0.75" | 
| Cup Width | +0.051" to -0.254" | 
| Width | 0.9375" | 
| Width Tolerance | +0.203" to 0 | 
| Cone back to clearance radius | 0.06" | 
| Cup back to cleaning radius | 0.050" | 
| Tapered Front Backing Diameter | 1.3" | 
| Tapered backing diameter | 1.38" | 
| Cup front backing diameter | 2.40" | 
| Cup backing diameter | 2.28" | 
| Cage cone front clearance | 0.06" | 
| Cage cone back clearance | 0.01" | 
| Effective central location | -0.37" | 
| Ferrule Material | 51200 Chrome steel | 
| Roller material | 51200 Chrome steel | 
| Cage Material | steel | 
| Dynamic Radial Load | 17200 lbf | 
| Static Radial Load | 18400 lbf | 
| Dynamic Radial Rating (90 million rpm) (C90) | 4470 lbf | 
| Dynamic Thrust Rating (90 million rpm) (Ca90) | 1940 lbf | 
| Lubricant | Lubricant Added | 
| Temperature Range | -30° to 110 °C | 
 
        