The core of the escalator roller is made of iron material. Iron material has high strength and hardness and can withstand large loads, ensuring the stability of the roller under high-speed operation. Combined with the iron wheel core is a nylon outer ring. The combination of the two makes the roller have good wear resistance, self-lubrication, and corrosion resistance, which helps to reduce friction and wear of the roller during operation while improving The service life of the roller. The outer diameter is 80mm, the height is 30mm, and it is equipped with 6202 deep groove ball bearings. The product structure is reasonably designed and easy to maintain and replace.