40C15 sprockets with a stock bore comes with the standard 1/2" ID hole with no keyway or set screws and can be easily machine bored to custom sizes
This 23V1400SK Sheave uses an SK bushing
50BTB45 Taper Bushed Sprocket Dimensions
This 80BS35 sprocket features a 2" finished bore including a key-way and two setscrews
BK85 Pulley 3/4" Bore 40 HP Hollow Pin Roller Chain 40C15 sprockets with a stockThis BK85 Pulley 3 4" bore is directly interchangeable with other manufacturers, is 8. 25" 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 BK85 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