| Designation | External Gear | TLOR20/414 Four-point Contact Ball Slewing Bearing |
| Boundary Dimension | D(Da) | 504 |
| d | 304 | |
| H | 56 | |
| H1 | 46 | |
| h | 10 | |
| Mounting Hole Size | D1 | 455 |
| D2 | 332 | |
| n1 | 10 | |
| n2 | 12 | |
| φ1 | M12 | |
| φ2 | φ18 | |
| Structure dimensions | d2 | 375 |
| d1 | 415.5 | |
| D3 | 412.5 | |
| Gear Data | m | 5 |
| z | 99 | |
| do | 495 | |
| x | 0 | |
| Wt(KG) | 30 | |
+86-021-54846037