Though dimensionally equivalent
and mounting plates/brackets for an efficient installation
This BK62 Pulley 3/4" bore is directly interchangeable with other manufacturers
the 5210 bearing features raceways that are precision honed to a superb finish
BK90 Pulley 1-1/8" Bore filter_H40BS20 Though dimensionally equivalentThis 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