One-klick solution: Half Shells
The JÄGER experts propose an alternative: two half shells lockable with each other, manufactured with injection molding.
After the first exchange of ideas between the engineers at Jäger and the developers of the bolt manufacturer as well as the system manufacturer, the Jäger engineers manufacture the first mutual proto-types with a 3D print procedure. The prototypes made from drawings run through several steps which form the coordination process with all those involved.
The basic idea seems so simple and convincing: Two half-shells hug the area of the extension shaft and are connected via a click lock. The halfshells are made of PP (polypropylene) and offer the right aver-age between stability and dimensional tolerance of the extension shaft.
In order that the bolts are centered to the hub inside the throughway opening during the assembly process of the rotor blade the half-shell receives a slim, circumferential bulge at one place. This does not only protect the scratch-sensitive surface from material damage. The rotor blade bolt is fixed on the hub using a nut, keeping the protection of the extension shaft in the system.