Rotating Equipment, Parts, Engineering and Service

Pneumaflex and Spiroflex Couplings

Max Lohmann and Max Stolterfoht started in 1884 with the brand Lohmann + Stolterfoht. The friction couplings they both invented at the same time were able to shift during operation. They named their coupling the "A" Coupling. After a few years they received a large customer that needed friction clutches: the submarine business. They needed a coupling to connect the diesel with the propeller shaft. Because of these close relations with ship builders, they started to offer complete reverse reduction gearboxes in 1926. 

Pneumaflex Range

These highly elastic torsionally and vibration damping coupling is pneumatiaccaly operated. It is a double cone friction clutch. This dry operated clutch 

Main Advantages:

  • Combination of a dry friction clutch and highly elestic coupling without short lived idle bearing system.
  • Complete separation of primary and secondary sides.
  • Backlash-free, no wear of components subject to backlash
  • Smooth and easily controllable engaging operation
  • Clutches can be vertically removed.
Lohmann Stolterfoth Coupling Pneumaflex

Lohmann Stolterfoh Coupling Pneumaflex internals

Spiroflex Range

These highly elastic torsionally coupling can compensate off center misalignment and deviations from angular and axial positions. They can prevent damage due to for instance torsional vibrations.

Main Advantages:

  • High torsional flexibility
  • Different rubber hardness grades available
  • Elements can be removed radially
  • Backlash free torque transmission
Lohmann Storlterfoht Coupling Spiroflex