Shaft Sizes: 1-1/4" to 1-7/16"
160A13 sprockets with a stock bore comes with a 1-1/2" inside diameter plain hole and can be easily machine bored to custom sizes
This 100BS23 sprocket features a 2-7/16" finished bore with a key-way and two set screws
120BS28 2" Finished Bore Sprocket Dimensions
BK67 Pulley 1" Bore American Standard Roller Chain Shaft Sizes: 1-1/4" to 1-7/16"This BK67 Pulley 1" bore is directly interchangeable with other manufacturers, is 6. 45" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. It works with belt sizes A, 4L, B, 5L, AX, BX, AA, and BB. What separates this BK67 pulley from the others is that it is made using a high grade 35 cast iron, is phosphate coated, painted, and balanced at the factory. Using the grade 35 cast iron offers a higher tensile