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- Model DF-2000 - Torque-Activated Core ...
Model DF-2000 -Torque-Activated Core Chucks
Automatic Concentric Expansion: As the torque chuck expands to grip a core, it automatically lifts and centers the roll, eliminating roll bounce and vibration. No Lubrication ~ Minimal Maintenance: Little dust accumulation in the chuck means no jamming and easy removal of cores. No Sidearm Force Needed from the Roll Stand, Multiple Core Re-Use, Elimination of End-of-Roll Waste: The DF-2000 chuck grips harder as more torque is applied. Other chucks rely on sidearm force from the roll stand to push the gripping elements into the core wall. These chucks damage the core and waste material at the end of the roll.
- Custom machined mounting flange adapts core chuck to any roll stand
- Teflon thrust washer helps to ensure free movement of chuck
- Central hex
- Smooth gripping jaws with large surface area provide no-slip grip on any core material without damaging cores
- Rollers travel on hex cams with little friction to provide free expansion of jaws. Jaws grip effectively in light or heavy tension applications
- Roller cage
- End cap
- Socket head cap screw
As a result, the chuck can be used in the lightest to heaviest tension applications. The chuck’s mechanical design eliminates the need for the sophisticated and expensive plumbing associated with pneumatic or hydraulic chucks. Rotary unions are also unnecessary with the DF–2000.
There are other chucks which are based on the torque-activated principle, but they use “sliding friction” inside the chuck for expansion. These chucks can’t overcome the friction created by the roll weight to lift and center the roll. A non-centering action results, causing roll bounce and possible jamming. Furthermore, their serrated jaws damage cores and create dust, leading to higher maintenance and more downtime.