Poly couplings are flexible jaw couplings with elastomer elements that have small dimensions and weights, but can transmitt large torques. Compensation of axial, radial and angular displacements is possible to a small extent, but vibration damping is more important. Vibrations caused by starting jolts are quickly reduced by the Elastomer inserts.
different versions of the couplings are selected dependant upon the torque
transmission, type of load and area of application. The simple version of the
POLY-N coupling is usually provided with a single Elastomer ring. The poly
coupling, on the other hand, has the elastomeric elements (segments) in both
coupling halves as a special feature. This design feature means that a
significantly larger number of Elastomeric elements (segments) and therefore a
greater effective mass is available for elastic deformation than in comparable
couplings with packs in one piece. At the same time, the Elastomeric couplings
work with relatively low specific surface pressures on the compounds.
The balance of the poly and poly-N couplings is checked during mechanical processing of the coupling halves. Another check is also carried out when it is assembled on a test shaft to ensure that the clutch runs properly. Balancing protocols are according to DIN 21940 and are available on request.
delivery quality corresponds to a minimum of
Q 16. Parts 3 of type AZ which are balanced to quality level Q 6.3.
Balancing to quality level Q 6.3 is only possible on coupling parts with a
finished bore or ready-to-install parts.
- Turned parts
GJL-250 (GG 250) to DIN 1691
- Elastomeric elements made of NBR rubber as standard (alternative materials possible).
We would be happy to support
you in selecting the coupling. Information on assembly, disassembly and the
technical data can also be found in our catalog for download