| Series | LM121900 |
| Cone Part Number | LM121948D |
| Cup Part Number | LM121911 |
| Design Units | Imperial |
| Bearing Weight | 7.9 lb |
| Cage Type | Stamped Steel |
| Aa - Cage-Cone Backface Clearance | 0 in |
| d | 4.25 in |
| D | 6.0000 in |
| B - Double Cone Width | 2.5625 in |
| C - Cup Width | 1.1250 in |
| T - Bearing Width across Cups | 2.5624 in |
| R - Cone Frontface To Clear Radius1 | 0.030 in |
| r - Cup Backface To Clear Radius2 | 0.130 in |
| da - Cone Frontface Backing Diameter | 4.53 in |
| Db - Cup Backface Backing Diameter | 5.51 in |
| Ab - Cage-Cone Frontface Clearance | -0.03 in |
| C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 | 9810 lbf |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 | 65900 lbf |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 | 17100 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 4740 lbf |
| K - Factor7 | 2.07 |
| e - ISO Factor8 | 0.28 |
| Y1 - ISO Factor9 | 2.39 |
| Y2 - ISO Factor10 | 3.56 |
| G1 - Heat Generation Factor (Roller-Raceway)11 | 218 |
| Cg - Geometry Factor12 | 0.137 |
