Standard_Parts_Catalogue

Page 1694 | 3.6 Moving, Transferring, Connecting with Shafts and Joints Couplings Assembly Instructions Shaft-hub fastening The right type of fastening must be selected to ensure simple and reliable mounting of the coupling hub on the shaft. The following shaft-hub fastening types are available: Clamping hub The fastening with clamping hubs is entirely non-positive by reducing the slit height using socket cap screws. In this type, the coupling hub is fastened simply and securely with a high clamping force, without damaging the surface of the shafts. Grub screw When used for fastening, grub screws are inserted radi- ally to create a positive and non-positive connection to the shaft surface. Alignment holes bored into the mounting diameter allow the coupling hub to be positioned precisely. At the same time, this prevents damage to the clamping point. Combination with keyway The combination of grub screw or clamping hub faste- ning with feather keys prevents slipping due to torque while ensuring precise angular positioning of the shafts. This type of fastening also provides for maximum torque transmission. Shaft insertion depth For correct fastening of the coupling hubs, the shaft must be installed according to the recommended shaft insertion depth l 2 . The shaft insertion depth l 2 is specified in the stan- dard sheet of the respective coupling. If the insertion depth is too low, the shaft could slip out of the coupling, or the clamping hub could break. If the shaft is inserted too far, this can cause interference within the cou- pling, leading to damage.