This BK77 Pulley 1-1/8" bore is directly interchangeable with other manufacturers
2040B20 Sprocket
This BK62 Pulley 3/4" bore is directly interchangeable with other manufacturers
50BS48 1 1/8" Finished Bore sprocket Dimensions
This 80BS54 sprocket features a 2-15/16" finished bore including a key-way and two setscrews
BK90 Pulley 1-1/8" Bore filter_H40BS20 This BK77 Pulley 1-1/8" boreThis BK90 Pulley 1 1 8" bore is directly interchangeable with other manufacturers, is 8. 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 BK90 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