The Browning Company YCS448 External Tooth Spur Gear

The Browning YCS448 External Tooth Spur Gear is a robust, cast-iron drive gear designed for heavy-duty power transmission. It features 48 teeth at a 4 Diametral Pitch (4 DP) and a 20-degree pressure angle, delivering predictable mesh and load capacity in AGMA-rated applications. The gear's outside diameter is 12.5 inches, with a 12.0 inch pitch diameter and a 3.5 inch face width, providing substantial contact area for torque transfer. It ships with a minimum plain bore of 1.4375 inches so the bore can be finished to the exact shaft size in your assembly. The Browning gear uses a B hub configuration with a 5.25 inch hub diameter and a 1.75 inch hub projection, and an overall width of 5.25 inches, ensuring solid mounting and alignment in tight layouts. Construction is webbed for strength while keeping weight reasonable for its size, and the gear is manufactured to AGMA standards, reflecting Browning’s long-standing emphasis on precision and reliability. Cataloged as 1219807 and MFR #YCS448, this external tooth spur gear is well-suited for applications where a large, single external gear with a finishable plain bore is required—such as primary drive stages in conveyors, mixers, or industrial machinery—where precise bore sizing and robust torque transmission are essential.