Valtra Sigma Power has been recognized as a significant innovation in agricultural engineering.
With Sigma Power the tractor's PTO driveline is constantly monitored and, when the PTO is in heavy use, up to 30 hp more can be developed.
The Sigma Power PTO boost was first introduced with Valtra Valmet model 8750. It received a Gold Medal at the 1997 Agritechnica, and today forms the basis for boost technology used even by other manufacturers.
The Sigma Power history in a nutshell
Valtras forefather Muktells is founded in Eskilstuna, Sweden
The first tractor, Munktell 30-40, is launched
Start of serial production of Valmet tractors
Valmet 565 with synchronized gearbox introduced
Double clutch introduced: one pedal for drive and another for PTO
Valmet 900 with heavy-duty ground speed PTO and gear-levers on the side
The Power Plus Series features flywheel installed turbine clutch
Sigma Power is launched in Paris
Valmet 8750 with Sigma Power receives the DLG gold medal at Agritechnica
The 500.000th Valtra tractor is manufactured
Sigma Power changes because of electronic engine management and common rail injection
The Valtra LHLink pivoting front linkage and PTO are presented at Agritechnica
Valtra Direct is launched: the first stepless transmission with ground speed PTO