ELBO-B couplings are used in all applications requiring an absolutely reliable transmission of torque.

Wide range of applications

ELBO-B couplings cover a wide range of requirements. Available in 26 different sizes, couplings are available for a range of torques extending from 120 to 450,000 Nm. With the different variants of the individual sizes, a finer torque gradation is achieved. This is realized via the different number of bolts in the coupling. There are up to three variants for every size.

Torsionally flexible and vibration damping

EL BO-B couplings damp torque impacts and allow shifting of critical speeds.

Low maintenance

Assuming correct coupling design and correct alignment at assembly, the buffers which are subjected only to compression during torque transmission, have a long life.

Easy to install

The buffers in the ELBO-B couplings can be pushed into position. Both bolts and buffers can be replaced without any axial movement of the motor or machinery.
Uncoupled machinery can be radially dismantled.


ELBO-B couplings are fail-safe up to the shear torque of the metallic parts which is many times the permissible impact torque. They therefore offer the greatest possible operational reliability.

Angular, radial and axial flexibility

Angular, radial and axial shaft displacements can be balanced as required.

Independent of the direction of rotation

EL BO-B couplings can be used for both directions of rotations and are therefore suitable for reversing operation.