DF–2000 Torque-Activated Shaftless 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. Minimum maintenance.
Little dust accumulation in the chuck means no jamming and easy removal cores.
No Sidearm Force needed.
Core chuck won't damage core ID's so cores can be reused. Rolls can be run to the last wrap – no wasted web material.
The DF-2000 chuck grips harder as more torque is applied. Other chucks rely on sidearm force from the machine to push the gripping elements into the core wall. These chucks damage the core and waste material at the end of the roll.
The DF-2000's patented torque-activated shaftless design has made it the world's most effective and best-selling shaftless core chuck. Six precision-ground steel rollers are mechanically linked to travel up and down bi-directional ramps created by the back of the jaws and the hexagonal cam. This rolling action minimizes friction while causing expansion and retraction of the chuck’s jaws. 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.
DF-2000 Quick Disconnect Torque Chucks
- Quick changes among a variety of core sizes.
- Specially designed to be swapped on the fly, between rolls if necessary, with a single center bolt.
- An adapter plate is required for mounting.
- Best applied where roll stand width capacity is limited and changes of core sizes are frequent.
DF-2000 Slide-On Chuck Adapters
- Chuck adapters are available in cases where multiple core sizes are used and quick changeovers are needed.
- Roll weights are limited to the base chuck specifications.
DF-2000 Core Kicker Chucks
- Automatic core ejection system.
- This “Core Kicker” features a core ejection device which kicks the core off the chuck as the roll stand opens.
DF-2000 Through-Shaft Torque Chucks
- For core sizes larger than three inches. (DF-1000 chucking systems for 3-inch cores).
- Chuck offers the same characteristics as all DF-2000 chucks, but mounts on a through-shaft in shafted applications..