In this system, the injection and transfer is done by pushing the materials by paddles connected to the chain links, which causes dynamic stresses and the need for high strength.
In these chains, rollers are used on the chain bush to reduce side forces (the weight of transported materials and the weight of parts, etc.) and to guide the movement of the chain. In these rollers, the adjustment range between it and the chain bush is in the form of rolling adjustment, and the movement of the roller on the rail tends to roll due to contact friction.