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40BS21 1" Finished Bore Sprocket Dimensions:
Bearing Size: 6311-2RS
Recommended Maximum Bore: 1-1/4"
This 35BS17 sprocket features a 3/4" finished bore including a key-way and two setscrews
BK77 Pulley 1" Bore #100 SD Type Sprockets 40BS21 1" Finished Bore SprocketThis BK77 Pulley 1" bore is directly interchangeable with other manufacturers, is 7. 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 BK77 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
