uxcell 20-Tooth Chain Idler Sprocket, 12mm Bore

uxcell 20-Tooth Chain Idler Sprocket is precision-engineered for smooth chain tensioning in machinery. Made from durable C45 carbon steel with a high-temperature quenched finish, this idler sprocket resists wear and delivers long-lasting performance. The 12mm bore fits ISO 04C chains with a 1/4" pitch, ensuring reliable compatibility.

Equipped with a double-sealed 6901Z bearing, it rotates freely with minimal friction, reducing maintenance needs. Ideal for milling machines, drills, and industrial applications, this black oxide-finished sprocket maintains stable tension and extends chain life. Each unit includes one idler sprocket for easy installation.