escalator step roller wheel OTIS 76x22x6203 escalator parts

The OTIS escalator roller has a built-in sealed self-lubricating bearing and a 40Cr chain plate; it combines a high-quality chain, which is also suitable for escalator steps. Tensile failure test, roller static load test and fatigue test will be performed at the factory, as well as wear resistance, impact strength, oil resistance, salt resistance and water resistance.