Wind-turbine drivetrains undergo severe transient loading during start-ups, shut-downs, emergency stops, and during grid connections. Load cases that result in torque reversals may be particularly damaging to bearings, as rollers may be skidding during the sudden relocation of the loaded zone. Seals and lubrication systems must work reliably over a wide temperature variation to prevent the ingress of dirt and moisture and perform effectively at all rotational speeds in the gearbox. Many wind-turbine gearboxes have also suffered from fundamental design issues such as ineffective interference fits that result in unintended motion and wear, ineffectiveness of internal lubrication paths and problems with sealing. Improving the resistance of future gearbox designs to all these issues is a key to the future cost of energy generated by wind turbines.

The automotive and industrial supplier Schaeffler has signed a contract with the CERATIZIT Group for the acquisition of CERASPIN. Based in Livange, Luxembourg, CERASPIN has over 25 years’ experience in the development and production of premium ceramic products, the majority of which are processed into rolling elements for various bearing applications.

Danfoss Power Solutions has appointed Ines E. Sira as the new president of its Fluid Conveyance division, effective immediately. Based at the company’s campus in Eden Prairie, Minnesota, Sira will be a key member of the Power Solutions leadership team and will report directly to Eric Alström, president of Danfoss Power Solutions.