Freezing chuck for turning applications GFR-20-IOL

Using GFR-20-IOL icing plate for lathing perfect rounded blanks is no longer a necessity as any collet is avoided. Thinner blank can be used, leading to a material saving with a deep core freezing and easy repositioning for the next step. Freezing mandrels GFR-20-IOL are interchangeable in order to fit various manufacturing steps. Generally the mandrel used for the first side is flat to fit the blank surface, while mandrels for the second side are machined with a mirror image of the lens profile. Thanks to an optional external centering device, positioning of lathed disks can be achieved easily. As the original “dead length” collet is used underneath the freezing device, shifting to a “classical” manufacturing stays simple.