Push & Pull Chains
Users have the choice of a number of different systems for linear motion applications in industrial equipment. These generally involve hydraulic/pneumatic cylinders or electro-mechanical lead and ball screw drives.
The Framo Push pull Chain represents an impressive new development of a simple principle
It is a special kind of chain which, unlike the conventional mechanism, becomes rigid when operated under thrust load, but can still be looped and driven by a conventional sprocket wheel (see fig.1). The Framo Push pull Chain can realize thrust forces up to 35 kN
The classic power transmission system involving a continuous chain with at least two sprocket wheels and a tensioning element is replaced by an "open-ended" chain with two free ends. The drive can be located wherever it is most convenient (see fig. 2).
The chains are given their push force characteristics by incorporating specially shaped side links that engage and support each other with very little axial play (see fig. 3).
The main applications for Linear Chains are seen in effecting push-pull movement of medium-sized and large loads in any direction (including vertical movement). The chain sprocket can be driven by a gear motor or if preferred a hydraulic motor.
Depending on the pushing force, length and travel speed required, the Linear Chain can be configured to run on a given sliding surface or a special guide channel can also be supplied if preferred.
Standard chain sizes with 25, 40, and 60 mm pitch are kept in stock, ensuring that an optimum solution can be offered on short deliveries.
Special hardened steel is generally used for the chain links (there is also the option of stainless or annealed steel).
Catalogue
» More info at Framo website