| Specifications | GMD 8730 | GMD 9530 |
| Cutterbars | OPTIDISC® | OPTIDISC |
| Working width (m) | 8.20 – 8.45 - 8.75 | - |
| Working width (m) - In combination with front mount unit (depending on the selected overlap) | - | 9.13 - 9.53 |
| Number of discs with protecting skids | 2 x 7 | 2 x 8 (heat treated) |
| Knife attachment | - | FAST-FIT quick knife attachment |
| Modular disc bearing stations removable from the outside | - | Standard |
| Swath width (m) | 2 x 2.40 | 2 x 2.80 on average |
| Swath width (m) | 2.4 | - |
| PTO speed (rpm) | 1000 | 1000 |
| Ground pressure | - | LIFT-CONTROL hydro-pneumatic suspension |
| Setting to transport position | Hydraulic vertical folding | Hydraulic vertical folding |
| Transport width (m) | 2.99 | 2.95 |
| Safety break-back | Combined Lift-Control and Non-stop safety | - |
| Drive train protection | - | PROTECTADRIVE system |
| Weight (kg) | 1760 | 2300 |
| Ground adaptation | - | Pendulum type articulation |
| Minimum power requirement for PTO (kW) | 88 | - |
| Minimum power requirement for PTO (hp) | 120 | - |
| Minimum PTO power requirement approx. (kW) for the triple combination | - | 99 |
| Minimum PTO power requirement approx. (hp) for the triple combination | - | 135 |
| Tractor hydraulic equipment | 1 DA + 1SA for the combination | - |