Antech’s range of Differential Shafts are designed to be easy to use and relatively maintenance free, ensuring the highest winding quality, even when rewinding very narrow rolls – down to 9mm in width. Cores are gripped by Friction Rings that run on a central Hard Chromed shaft, which has a relatively low coefficient of friction, over which the friction rings can rotate. The tension ranges of the shafts can be varied by changing the expanding strip material of the centre shaft, which provides the slippage. By designing the rings to slip internally, common issues have been eliminated in comparison to other designs of Differential Rewind Shafts.
- NO core dust in the mechanism
- Cores can be reused
- Sideway slippage eliminated
- Positive expansion and retraction to a consistent diameter
- Duplex and multiple tension applications
Antech can supply Differential Shafts & Differential Friction Rings in sizes ranging from 1″ Diameter up to 16″ Diameter and hold some standard sizes in stock for a faster delivery.
Click here for more information about reasons for using Differential Shafts.
Shafts can be linked to a Web tension control system which can be supplied by Antech. Click here to see our Web Tension Control systems.
Differential Rewind Shaft Upgrades
Antech can upgrade your existing Differential Shaft to utilise this optimum solution for Differential Wind. Many old machines utilise “Side Pressure” Differential Winding whereby increasing the side pressure on the shaft increases the slippage friction of the rings. This method creates a great deal of heat and does not create equal slippage resistance across the web width.
Whereas, with our Pneumatic Differential Friction Shafts they utilise internal slippage which ensures there is no core dust or side to side movement, since the core is gripped utilising the mechanical Friction Ring core chucks. This solution is the best method for Differential Winding since all the slit reels get equal frictional resistance and can usually be easily upgraded by Antech.
Please give us a call to arrange a visit to upgrade your equipment