The chain pitch should be as little as possible to lessen the impacts of the chordal action, which is caused by the chain/sprocket engagement. Utilizing the smallest size possible enables the chain to work all the more easily. Furthermore, the manner how the steps are installed on escalator step chain is not the same for each country. For instance in Japan, the bearing part of the chain is the focal point of the chain plate. This is where the step shaft is installed. In other countries, the step uses the extended pins as the shaft for the step. For the majority of escalators, it is normally the step side that conveys the merged weight of the travelers and of the steps themselves. In the other escalator types, the roller chains carry the entire weight of the passengers and the steps. The step chains are intended to have better wear resistance in connection to the weight. This is planned where the pin diameter is larger than the regular chains. Also, the distance from one step to the other and from each chain link to the other is strictly coordinated. There are nowadays two types of the machine which the client can select from. The first is the lubrication-free type and the other is the low-noise type. In the lubrication-free model, there is actual lubrication done at longer, regular intervals. On the other hand, customers for quiet environments mostly prefer the low-noise type.
How are these Escalator Step Chains Attached?
Most applications of these escalator step chains use small pitch conveyor chains with attachments in one of these ways: convey materials directly on chain attachments, and convey materials on jigs installed on the attachments. The features of the conveyed materials and the working atmosphere are distinctive for each application. Many types of attachments with and without jigs are obtainable. Modern standard attachments are proven and preferred based upon the long history of attachment chain use and demand, and they give top notch, economy, and fast delivery to meet the majority of clients needs. The steps must be able to support a load of 450 kg/m2 without such distortion that would prejudice the correct performance of the escalator. The top surface of the steps must be even and horizontal in the area used by the passengers, it should be channeled in the direction of movement.