Mach display is quick on the jaw

Quick-jaw change system and power chuck go on show at Mach 2006.

At Mach 2006 on stand 5129 Schunk Intec will exhibit the Rota THW-Plus with quick-jaw change system and the Rota NCK-Plus power chuck.

The THW-Plus meets the demands of small batch sizes with accuracy and repeatability.

The wedge bar large bore power lathe chuck can be changed within one minute with a jaw change repeatability of better than 0.02mm.

It has fast set-up times on medium and small workpiece batch sizes to reduce set-up costs.

Due to the high accuracy and jaw repeatability, soft and turned jaw sets do not always have to be re-machined.

The system is designed to unlock every jaw individually.

The large chuck bores are from 43 to 104mm diameter with chuck diameters of 165 and 315mm respectively.

The protection sleeve that can be exchanged from the front makes the chuck more flexible.

Consequently, individual adjustment to each workpiece can be done via adjustable stops, nozzles for central coolant feeding or via an ejector system.

An integrated ball mechanism improves operating safety during the jaw change by assuring that the operation key can be drawn out only if the wedge bar has meshed with the base jaw.

For connection to the draw tubes of various CNC turning centres, various adjustable attachment systems are available.

The Rota NCK Plus is a power chuck that can be used as a direct replacement for Kitagawa B200 series power chucks.

The chuck has Schunk quality and direct compatibility on existing Mazak, Mori Seiki, Okuma and Nakamura machines.

Using the wedge-hook system, an improved lubrication system and an enlarged chuck bore, the NCK-Plus provides flexibility and the one-piece chuck body increases rigidity.

The lubrication system with a surface structure on the most important guideways avoids a loss in clamping forces.

The piston guide and support improve wear behaviour, continuous clamping accuracy and long tool life.

The blank draw tube connector that can be dismantled and bored out is integrated into the chuck and therefore facilitates the self-boring out of the draw tube threads.

The power chuck is available for all CNC lathes in the sizes 165, 210, 250 and 315mm with clamping forces from 57 to 145kN.

It is suitable for maximum speeds of 6000rev/min (on the 165mm chuck) and combines jaw strokes from 2.75 to 5.30mm per jaw.

Each delivery includes chuck fastening screws, T-nuts with screws, blank draw tube connector and assembly key.

The base jaw interface is available in two versions - either with fine serration 1.5mm by 60deg or with 1/16 by 90deg serration.

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