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Shaft coupling plays key role in glass coating process

22 May 2013

Precision offset couplings are being specially configured for applications in the vacuum industry. A good example is the Semiflex range from Abssac, which has been specified for duties in the field of glass coating technology.

The Semiflex shaft coupling from Abssac
The Semiflex shaft coupling from Abssac

With the increasing demand for Low-E glass worldwide, high vacuum applications of continuous substrate flow, which can adapt the pressure to process conditions, has meant a huge improvement in glass stability, optical appearance, scratch resistance and standard solar control coatings.

Such innovative processes demand a reliable drive shaft coupling that delivers high torque, reliability and, above all, high contact velocity. Semiflex shaft couplings used to connect the rotary vane pumps and root blowers that serve these processes, are proving very successful in this application area.

Located within the sputtering machine, the Semiflex shaft coupling offers both compactness and high torsionally stiffness. Moreover, Semiflex is also very efficient in operation, with no restoring forces required to maintain shaft alignment.

This is of particular advantage, as the machines in this application can have as many as ten driven stages, all requiring accurate torque transfer connections.

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