Output shaft as a hollow shaft with keyed connection /..A

The material and keyed connection of the machine shaft must be designed and dimensioned by the customer according to the occurring loads, e.g. impact loads.

Depending on the gear unit size, the material of the shaft must have the following minimum yield point for transferring the nominal torque:

• 320 N/mm² for sizes X..A100 – X..A290
• 360 N/mm² for sizes X..A300 – X..A320

The key material must be selected according to the occurring loads.

The key length specified in the dimension sheet must be observed as a minimum. If a longer key is inserted, it must be arranged symmetrically to the hollow shaft.

With a through-going machine shaft or axial forces, SEW-EURODRIVE recommends that the machine shaft be designed with a contact shoulder. To prevent loosening of the retaining screw of the machine shaft with reversing load direction, secure it with a suitable thread locking device. If necessary, 2 eccentric retaining screws can be used.

For detailed information on machine shaft design, refer to the dimension sheets in chapter Hollow shaft with key X...A.