This 40BS23 sprocket featured a 1-7/16" finished bore with a key-way and two set screws
While the phosphate coated and then painted finish adds corrosion resistance to the 33V280JA sheave
This 60BS72 sprocket features a 2-7/16" finished bore including a key-way and two setscrews
40B80 sprockets with a stock bore comes with the standard 3/4" inside diameter hole with no keyway or setscrews and can be easily machine bored to custom sizes
UCFBS207-22 bearing is a 1-3/8" bore three-bolt normal-duty flange bracket bearing that utilizes set screws to secure to a 1-3/8" shaft
AK94 Pulley 1-3/16" Bore filter_60B14-SB This 40BS23 sprocket featured aThis AK94 Pulley 1 3 16" bore is directly interchangeable with other manufacturers, is 9. 25" in diameter, is used with A style V Belts, and is manufactured in accordance with ARPM Standard IP20 for safe operation. What separates this AK94 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 strength and is more wear