Browning 50B28 1 7 8 Sprocket

Browning 50B28 is a No. 50, 28-tooth roller chain sprocket designed for 5/8-inch pitch drives. This B-style, plain-bore sprocket is manufactured in carbon steel for durability and is intended for ANSI roller chain applications. The sprocket's outside diameter is about 5.922 inches, and it is commonly offered with stock bores around 7/8 inch (with some catalogs listing 1-7/16 inch bore options). It uses 28 teeth to balance torque transfer and drive speed for compact installations. This 50B28 variant is used in industrial drives and conveying systems where No. 50 chain engages the sprocket reliably. When replacing an existing part, confirm the bore size and keyway on your shaft to ensure proper fit with the drive chain. The 50B28 designation is widely cataloged across brands, tying back to the No. 50, 5/8-pitch chain standard.