Series 609 pneumatic expansion coupling

Series 609 expansion couplings from Vorwald are characterised by their exceptionally lightweight and robust design

Series 609 expansion couplings from Vorwald are based on the proven design of the series 409 expansion shaft and are characterised by their exceptionally lightweight and robust design. These couplings offer versatile mounting options, as they can be pushed onto a carrier shaft or mounted directly on a bearing flange on the bearing shaft.

One or more extremely narrow reels can be clamped across the entire width of the coupling. Special diameters of up to 300 mm are also available in addition to the standard diameters of 75 mm (3") and 150 mm (6"), and the length of the expansion couplings can be customised to your requirements. In contrast to our other coupling types, longer lengths are also economically feasible.

The expansion couplings are attached to the carrier shaft using a split clamping ring. This expansion coupling is particularly suitable for heavy reels, as the flat bladders can be loaded with an air pressure of up to 6 bar, which enables a very high torque to be transmitted.

One of the major advantages is that there is no risk of the bladder bursting even if clamping is performed without a core or with the core(s) only partially in place. This is because the expansion ledges are guided in a T-groove to prevent unwanted expansion of the bladder. If necessary, the expansion bladders can be replaced very quickly from the outside by releasing the clamping plates. This makes the 609 series a flexible and efficient solution for various applications.