Boston Gear YJ15-1 Spur Gear

Boston Gear YJ15-1 is a steel external-tooth spur gear designed for reliable power transmission between parallel shafts, offering 15 teeth, a 6 diametral pitch, and a 20° pressure angle for standard gear trains. The gear has a precise 2.5 inch pitch diameter, a 2.0 inch face width, and a 1.0 inch bore, and it includes a keyway and setscrew for secure mounting on a shaft. Catalog listings identify this exact model as 46208 under the YJ15-1 series, ensuring correct cross-reference in repair or replacement workflows. Within the Boston Gear lineup, YJ15-1 variants are available with either 14.5° or 20° pressure angles, catering to different torque and backlash requirements. Some retailer and distributor listings note hubbed and hubless configurations within the YJ15-1 line, increasing compatibility with various shaft mounting schemes. This gear is a member of the RRX family of spur gears, manufactured in steel for industrial duty. Overall, the YJ15-1 46208 configuration provides a compact, durable option for parallel-shaft power transmission in machinery that uses a 2.5 in pitch diameter and 1 in bore.