Unsupported lengths and long travels with large fill weight create extreme stress on energy chains, so igus has developed its E4Q e-chain series. Based on igus’s robust e-chain standard E4.1, the new series, first presented at the Hannover Messe 2019, offers a high degree of modularity and a long service life. It uses shapes inspired by nature in order to optimise material and therefore the weight of the chain. The smooth, contoured design can be found on the outside of the chain links as well as on the stop-dogs. Despite material recesses, the new development has high strength and stability comparable to the E4.1 series.
The crossbars can be opened and closed without tools. On the top of each crossbar, there are two hollows for the fingers, by which the locking hooks can be easily pulled up. Unlocked on both sides, the crossbar can be removed with little effort. This allows the easy opening and closing of the chain even in a guide trough, and accelerates the filling of the e-chain by up to 40 percent. This innovative design also has significantly higher pull-out forces than its counterparts in the locked state.
Due to its special design, this e-chain is very quiet when moving. However, if additional noise reduction is required, igus has integrated an optional system in the inner horizontal stop-dog. These are two connected balls that dampen the impact during the radius and extension stop. The balls are made of a new noise-optimised and soft material that further reduces the sound level without restricting the stability of the stop-dogs.
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