The LinearChain push-pull chains are made from precision chain links which enables the chain to push as well as pull heavy loads. The chain links have a special profile with interlocking fingers at one end which enables the chain to to roll or fold-up for efficient storage in one direction and form a rigid thrust device in the other direction. The LinearChain is available in three basic sizes allowing stoke lengths of up to 5 meters and a maximum push force of up to 35,000 N. Compact drive units for the chain and storage magazines are readily available for all chain sizes.