... of belt conveyor machinery trough idlersMaterials (2 kinds): seamless steel pipe, reinforced plasticThe bearing seat: coat iron, sheet metal ... : 89, 108, 133, 159mmLength: 200 to 3400mm Used in the steel industry, harbor, coal industry, power industry, mine, cement industry ... , at least 5 times painting. Rust-resistant. The specifications of the trought idler1. Trough roller 35°Garantee: One year ...