| Series | 30311M |
| Cone Part Number | X30311M |
| Cup Part Number | Y30311M |
| Design Units | METRIC |
| Bearing Weight | 1.6 Kg |
| Cage Type | Stamped Steel |
| d | 55.000 mm |
| D | 120.000 mm |
| B - Cone Width | 29.000 mm |
| C - Cup Width | 25.000 mm |
| B | 31.500 mm |
| R - Cone Backface To Clear Radius1 | 2.540 mm |
| r - Cup Backface To Clear Radius2 | 2.03 mm |
| da - Cone Frontface Backing Diameter | 70.10 mm |
| db - Cone Backface Backing Diameter | 71.12 mm |
| Da - Cup Frontface Backing Diameter | 114.00 mm |
| Db - Cup Backface Backing Diameter | 107.95 mm |
| Ab - Cage-Cone Frontface Clearance | 3.8 mm |
| Aa - Cage-Cone Backface Clearance | -0.5 mm |
| a - Effective Center Location3 | -6.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 45100 N |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 174000 N |
| C0 - Static Radial Rating | 190000 N |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 26600 N |
| K - Factor7 | 1.69 |
| e - ISO Factor8 | 0.35 |
| Y - ISO Factor9 | 1.74 |
| G1 - Heat Generation Factor (Roller-Raceway) | 62.8 |
| G2 - Heat Generation Factor (Rib-Roller End) | 24 |
| Cg - Geometry Factor | 0.0628 |
