Martin Sprocket & Gear 4040 Tapered Locking Bushing, size 1-7/8 in., is a tapered locking device used to secure sprockets, pulleys, or hubs to a shaft. It employs a tapered interface to produce a tight, removable fit that resists loosening under load in power-transmission assemblies. This 4040 component is part of Martin's locking bushing lineup designed for reliable shaft mounting in industrial drive systems.
