T/CEA 0057-2023 Active

Main technical content: This document specifies the classification, technical requirements, test methods, inspection rules, maintenance, replacement and scrapping conditions, marking, packaging, transportation and storage of polyamide (nylon) pulleys for elevators. This document is applicable to polyamide (nylon) pulleys for elevators made from caprolactam as raw material, using alkali-catalyzed polymerization and centrifugal casting molding. This document is applicable to guide pulleys for traction ropes, car and counterweight pulley assemblies. Other pulleys for elevators can refer to this standard. This document is applicable to power-driven traction elevators with a rated speed of not more than 2.5m/s. For power-driven traction elevators with a rated speed of more than 2.5m/s, this standard can be referenced, and the unapplicable parts shall be determined by the pulley manufacturers and elevator manufacturers through consultation.