Precision joints / Cardan shafts
Precision joints in various versions acc. to DIN 808.
Precision joints consist of a joint centre piece and two hubs that are interlinked by straps. Bearing of the joint heads is made by plain or needle bearing selected based on the kind of application.
This bearing allows the precision joints (single joints) to compensate for significantly larger angular displacements compared to other coupling types.
Double joints that have two bearings are able to offset radial displacement in addition.
Precision joints / cardan shafts in an extendable version are able to offset axial displacement in addition to angular and radial displacement.