Premium Standard Roller Chain ANSI | Single Pitch | Standard | SBR “SBR” (Solid Bushing & Roller) is the product type of SUGIYAMA premium standard roller chain. Our Premium roller chains are made with solid bushings and solid rollers, specially treated pins and bushings, and a stringently controlled heat treatment process. These are only a few of the many features built into SY branded chains. They meet or exceed ANSI roller chain standard B29.1, making it the most suitable selection for almost any application. Average Tensile Strength * Chain is rollerless. Takes account of a 35% reduction Dimension shown is bushing diameter. of fatigue strength when a single pitch offset link is u