A decade old principle for extending the tension range of chuck jaws is the equipping of the slits with rubber inserts. With wear these are inter-changeable.
To manufacture rubber inserts in various sizes we possess our own vulcanisation tools. Information about the measurements are available upon request.
As standard we use well tried materials of polymer bases NBR that especially excel due to their resistance to oil. The guaranteed tolerance range for dimensions accuracy lies with this material by DIN ISO 3302-1 M3, which corresponds to usual commodities.