BK60 Pulley 5/8" Bore 41B9 Sprockets 25B28 sprockets with a stock

25B28 sprockets with a stock bore comes with the standard 3/8" ID hole with no keyway or set screws and can be easily machine bored to custom sizes

80A10 sprockets with a stock bore comes with a 15/16" inside diameter plain hole and can be easily machine bored to custom sizes

This 41BS80 sprocket features a 1-3/16" finished bore including a key-way and two setscrews

This 60BS38 sprocket features a 1-7/16" finished bore including a key-way and two setscrews

BK60 Pulley 5/8" Bore 41B9 Sprockets 25B28 sprockets with a stockThis BK60 Pulley 5 8" bore is directly interchangeable with other manufacturers, is 5. 75" 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 BK60 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