Theoretically, threaded spindles can be manufactured in any length. The standard program is limited by the raw materials available on the market. The material length here is usually 6 meters.
The maximum spindle length that can be used is also limited by the application itself. The Deflection and also the permissible buckling force must be taken into account.
If spindles are required which are longer than 6 meters, there are various ways of producing them. Usually an extra forging blank has to be made in excess length. This is associated with corresponding delivery times and costs.
But there is also the possibility of putting together overlong threaded spindles from 2 or 3 parts. The connection of the two rods takes place before the thread is applied. We have special concepts for this connection that also take into account the drive torques occurring in the application.
junaspin is happy to support you in the selection and design of your screw drive. We would be happy to create your personal concept for how your oversized spindle can be manufactured.