Senvion has selected pitch bearings from German manufacturer IMO for its 3.4MW low wind turbine.
IMO will provide its T-Solid 4IPC roller-type pitch bearing for Senvion’s 3.4M140 EBC machine, the company said.
The devices continuously adjust the individual blade pitch angles during each rotor revolution.
This substantially reduces rotor blade and turbine loading, allowing for lighter and less-expensive turbine designs, it said.
“For such large-scale onshore turbines T-Solid 4IPC combines two main benefits,” IMO managing director Werner Schröppel said.
“First, it eliminates ring-separation and edge loading that is inherent to large-diameter conventional four-point bearings.
Second, replacing balls by rollers ensures that extended pitch-bearing lifetime requirements for individual pitch control operation will indeed be met.”
Image: Senvion
