The DF-2000 is the world's most popular shaftless core chuck. Some of its advantages are:
Concentric expansion minimizes roll bounce and vibration.
Automatic torque activation – no side force needed.
Smooth jaws grip the core without damaging the core.
Rolls can be run to the last wrap – no wasted web material.
Core chucks don"t damage core ID's so cores can be reused.
Rolling friction inside the chuck ensures tight core grip in low or high tension applications.
Step chuck accommodates different core sizes with no effort.
Core chuck adapters and quick-disconnect core chucks also available for multiple core sizes.
"Core Kicker" models automatically eject cores from chuck.
xpandgrip 4" chuck is a non locking method of gripping cores and is commonly used for cardboards cores on Shaftless unwinding machines.
Thanks to a patented closing system the movement of the keys takes place only when the chuck is completely inserted into the core of the roll.
This new design allows the unwind of the complete roll, without web breakage close to the core, a problem common with most mechanical chucks.
Keys are smooth and rounded in design, which allows the reuse of the cores, saving money and with low maintenance of the chucks.
To test adhesion and flexibility. Instrument with bending lever and 14 easily exchangeable cylindrical bending mandrels (2-32 mm dia.). To establish the smallest diameter of mandrel which causes the specimen
coating to fail after bending. Special adjustment and plastic bending roller for quick reproducible test results.
Hardinge Collet Blocks grip round, hex, square or odd-shaped parts and can be used horizontally or vertically on mill tables, flat or angled fixture plates, tombstones or rotary trunnions. Sizes are available from the 1C micro medical machining industry up to the 35J mid-range automotive and aerospace industries. Modular collets blocks are compact with a low profile for increased axis travel and for maximum layout of the workspace. A collet can provide certain advantages over a jaw chuck, vise and other clamping methods.
There are some advantages of using Collet Blocks instead of a standard vise or 3-jaw chuck. A collet automatically centers the workpiece for reduced setup time. Centers remain fixed when the fixture is removed from the machine table. A collet provides equal gripping pressure around the circumference of the part unlike a standard vise or a 3-point contact jaw chuck. Thin-wall parts or delicate materials may crush or distort in a standard vise or jaw chuck. Collets ordered with serrations can add additional gripping power to prevent push-back and radial slipping. Extended-nose collets can provide additional tool clearance. Some collet blocks accept expanding collets to grip a part at the internal diameter. Collet blocks are modular for arranging on a pallet for multiple part processing and quick pallet changeover.
Collet blocks and rotary trunnions can be ordered online at www.hardingetooling.com.
