ITA ENG FRA DEU ESP 汉语 Company Products Application Fields Support Download Contact #PFBook16 What are pulleys and how do they work? News What is an elevator pulley and how does it work? A pulley is a device on which the system's ropes turn and can be either a deflection or a traction pulley. Divertor pulleys are divided in two categories: dead eye (with the internal structure practically closed) or spoked. Blind pulleys are normally used for hydraulic systems and spoked pulleys for cable systems, but both can also be commonly used for different types of systems. Divertor pulleys are mounted on the installation in order to bring the ropes to the cabin and/or to the counterweight by transmitting their motion. The traction pulley is mounted directly on the winch and provides the motion to the plant. Are the pulleys certified? No, because there is no reference standard for pulleys. Nevertheless, PFB has carried out static load tests, taking the pulleys up to their breaking load, in order to guarantee a minimum safety coefficient of 6 between the static load indicated in our catalog and the breaking load measured during the test. The certificate was issued by the certifying body CERMET. Do they need maintenance? No, it is however necessary for the maintenance technician to carry out regular checks on the wear of the pulley grooves and the correct functioning of the bearings. If one of these checks proves to be non-compliant, it is necessary to replace the pulley as soon as possible to avoid compromising the functionality of the system. PFB pulleys PFB fully satisfies the needs of the market, providing a wide range of pulleys in G25 cast iron with hardness HB 200 ± 20. Our range includes: divertor standard, homelift pulleys, divertor pulleys for high static load, traction pulleys, dead eyes pulleys for ropes in derogation, solid for hydraulic systems, special pulleys. On request we can also supply plastic sheaves according to customer's drawing. Latest News #PFBook17 Which are the lift components? News Which are the lift components? There is a universe of components that make up a lift, and at PFB we design and manufact... READ MORE #PFBook16 What are pulleys and how do they work? News What is an elevator pulley and how does it work? A pulley is a device on which the system's ropes turn and can be either a d... READ MORE #PFBook15 What are the guide shoes used for? News Guide shoes are an essential component for the movement of the car on the rails. More precisely, guide shoes allow the car to mo... READ MORE FIND OUT MORE COMPANY About Us News & Events Contacts Press Kit FAQ PFB SRL Via R. Dalla Costa, 690 41122 Modena Tel +39 059 364055 Fax +39 059 372676 E-mail pfb@pfb.it ITA | ENG | ESP | DEU | FRA SUPPORT Commercial Support Technical Support Post Sale Support Download Area Live Chat © Copyright 2021 PFB srl - VAT 00158620369 - REA Number : MO-118019 - Registered capital 250.000,00 Euro i.v. Privacy Policy - Cookie Policy - Legal Notes - Privacy policy for customers and suppliers