Background introduction

The vast majority of heavy-duty escalators use the step chain design of roller outside link. These kinds of escalator products are mostly used in places with high rise and heavy passenger flow, such as subways, transportation hubs and other places. Therefore, there are strong requirements for the safety and production quality control, the step chain which is the critical and safety component in the escalator drive system. After perennial use, if the step chain has worn out and reached its design service life, it must be replaced timely and propertly.

Product Specification

Product detail

Chain pitch P=135.46mm, 3P = step distance=406.4mm

Chain use grease for lubrication

The step chain is connected to its left and right sides by solid axles and the step chain width is 1000 mm. The solid axels are fixed with the chain link plate and are not datachable for transportation.

​The step-chain rollers are made of hydrolytic resistant polyurethane. The eligibility test for step-chain roller anti-hydrolysis is 250hrs, oil hydrolysis is 250hrs, and life test run time is 5000hrs.

The step roller hub material is plastic as standard and metal hub is optional.

plastic hub metal hub

Unit of chain fold for ordering code

10 folds 2 folds offset link

Application

The pitch 135.46 roller outside link step chain is widely used in heavy-duty escalators and has a step distance of 406.4 mm. It is suitable for type 510 / 516 / 520 / HD-A / HD-B / HD-C escalators.

Production and Quality Control

Step chain production by industry-renowned step chain suppliers. The entire step chain manufacturing process includes material ingress, component machining, part heat treatment and final assembly, with a quality control program to ensure that each step chain achieves the original design requirements. Quality levels are consistent with international first-class brand escalators.

All types of step chains achieve the CNAS type test certificate.

Our service

Our professional engineering team can provide technical support to help clients identify the appropriate step chain specifications to meet safety and lifetime requirements.