Centering gives precision
Minimum run-out and guaranteed centre height
Press fit and torque loads spread symmetrically around the coupling, without load peaks, are the reasons for the outstanding minimum run-out and centre-height characteristics. Compared with conventional couplings using one or two keys to transfer torque.
Transmission of torque and bending forces
The coupling has the best stability characteristics on the market, as a result of:
 | No pins, keys etc.
The polygon shape transmits torque (T) without any loose parts such as pins or keys.
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 | No play in the coupling
The tight press fit guarantees that there is no play in the coupling. It can transmit torque in both directions without losing centre height. This is of great importance for turning operations, where play can cause sudden loss of centre-height and hence a collision.
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 | Symmetrical loads
Torque load is spread symmetrically on the polygon without peaks irrespective of rotation. Thereby the coupling is self-centering. It also guarantees long life of the coupling.
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 | Two face contact/High clamping force
Due to the combination of press fit and high clamping force the coupling gets a “two face contact”. |
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Transmission of torque
and bending forces
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Centering gives precision
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Repeatable positional
accurancy +/- 2 mm
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