In August 2011, SCHAAF was asked to supply a special device for inserting anti-friction bearings into wind turbines. Owing to the huge construction size of 1600 mm in diameter and the risk of the bearing tilting, individual cylinders are out of the question, rather a solution involving the insertion of the bearings precisely by means of an annular piston was sought. In the assembly process, a radial film of oil is simultaneously built up to minimise friction (oil press fit).
The device also has a manual piston return for ease of handling. Despite the large dimensions, the tool could be made and supplied within a few weeks.