PTI 28B-3-21B metric sprocket features a 1-3/4 in. pitch (28B), Type B hub, triple strand design, and 21 teeth. This ISO/British standard sprocket is suitable for heavy-duty power transmission applications requiring reliable chain drive performance.

PTI 28B-3-21B Metric Sprocket B-Hub Triple The PTI 28B-3-21B Metric Sprocket B-Hub Triple is a high-performance component designed for precision-driven applications in industrial settings. Engineered by PTI Engineered Plastics, a leader in plastic injection molding, this sprocket is built to provide exceptional durability and reliability, vital for optimal chain transmission performance. ## Key Features • **Material Construction**: Crafted from high-quality engineered plastics, ensuring lightweight yet robust performance suitable for demanding environments. • **Design Specifications**: Features a B-hub design with a pitch diameter of 21B, making it compatible with various multi-strand chain systems. • **Versatile Applications**: Ideal for use in automotive, medical, and aerospace industries where precision and reliability are paramount. • **Precision Engineering**: Manufactured to meet stringent ISO standards, ensuring tight tolerances and consistent performance across all applications. • **Multi-Strand Capability**: Supports triple strand configurations, enhancing load distribution and operational efficiency. ## Applications • **Automotive**: Utilized in engine systems and conveyor belts for efficient power transmission. • **Medical Devices**: Suitable for equipment requiring precise and reliable movement, such as laboratory automation systems. • **Aerospace**: Employed in systems where weight reduction without sacrificing strength is critical. ## Benefits • **Enhanced Performance**: The sprocket's precise design minimizes wear and enhances the lifespan of both the sprocket and chain, reducing maintenance costs. • **Reliability**: PTI's reputation for quality ensures that this sprocket will perform consistently under various operational conditions. • **Cost-Effective Solution**: By reducing downtime and maintenance, this sprocket provides a long-term economic advantage for users. --- *Product information compiled with AI assistance for reference purposes.*