Every* KUHN round baler is equipped as standard with KUHN's Integral Rotor technology. Large diameter, heavy duty auger flights are used on the left and right outer sections of the intake rotor to force feed the crop into the bale chamber.
*Excluding FB 119, VB 2160 & VB 2190 open throat models
KUHN also offers a crop chopping device which can be used instead of the non-cutting Integral Rotor . Depending on the model, a 14 or 23 knife cutting device is available. The 23 knife cutting device is available with either mechanical or hydraulic protection.
 | OPEN TROATH | OPTIFEED | OPTICUT 14 | SUPERSILAGE 23 | HYDROPROTECT 23 |
| FB 119 | | | | | |
| FB 2121 | | | | | |
| FB 2125 | | | | | |
| FB 2135 | | | | | |
| VB 2160 | | | | | |
| VB 2190 | | | | | |
| OPEN TROATH = No integral rotor |
| OPTIFEED = Integral rotor without cutting device |
| OPTICUT 14 = Integral rotor with 14 knife cutting device, single spring protected |
| SUPERSILAGE 23 = Integral rotor with 23 knife cutting device, double (pair) spring protected |
| HYDROPROTECT 23 = Integral rotor with 23 knife cutting device, single hydraulic protecte |
 | The 23 knives of the HYDROPROTECT are individually protected against foreign objects. By shifting a hydraulic valve you can easily select 0, 11, 12 or 23 cutting knives. |