BK90 Pulley 1" Bore filter_50B21-SB The reinforced top plate offers

The reinforced top plate offers reliable support for most NEMA Standard frame-size motors

and precision 72 tooth sprocket that is manufactured to accept a R1 bushing

Sheave Size: 68V1500J

the 6220 bearing features raceways that are precision honed to a superb finish

This 100BS24 sprocket features a 2-3/16" finished bore with a key-way and two set screws

BK90 Pulley 1" Bore filter_50B21-SB The reinforced top plate offersThis BK90 Pulley 1" 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