Our tapered bolt-on hubs made of grey cast iron offer an inexpensive way of mounting rotating parts such as fans, fan wheels and other devices quickly and easily on a shaft. They are mainly used where welding cannot or must not be used.

The two types, SM and BF, with their different sizes, offer a wide range of variations of different diameters for use in many typical applications. The components to be mounted can be mounted on the right as well as on the left side of the bolt-on hubs via a centring device.

The bolt-on hubs are prepared for the installation of commercially available taper bushes.

The taper bush system offers a simple, cost-effective and flexible variant of the shaft-hub connection. Due to the internationally standardised sizes of the taper bushings, changes to the bore diameters can be implemented easily and quickly from stock.



  • Extensive standard range

  • High availability

  • Compact design

  • Universally applicable

  • Low-priced

  • Quick and easy assembly

In addition to our standard range, we specialise in the design and manufacture of special screw-on hubs to individual customer specifications.


Areas of application

The tapered screw hubs are mainly used in air conditioning and ventilation technology. However, they can also be used in the entire field of general mechanical engineering.

Type SM

Hub size / Taper bushes

SM 12 1210
SM 16-1 1610
SM 16-2 1615
SM 20 2012
SM 25 2517
SM 30-1 3020
SM 30-2 3020

Type BF

Hub size / Taper bushes

BF 12 1210
BF 16 1610
BF 20 2012
BF 25 2517
BF 30 3020