| d - Bore | 55 | mm | |
| B - Cone Width | 29 | mm | |
| T - Bearing Width | 31.50 | mm |
| D - Cup Outer Diameter | 120 | mm | |
| C - Cup Width | 25 | mm |
| Series | 30311M | ||
| Cup Part Number | Y30311M | ||
| Bearing Weight | 1.60 | Kg | |
| Full Timken Part Number | 30,311 |
| Cone Part Number | X30311M | ||
| Design Unit | Metric | ||
| Cage Material | Stamped Steel |
