AK89 Pulley 1-1/8" Bore filter_35BS40-FB the 6317-ZZ bearing features raceways

the 6317-ZZ bearing features raceways that are precision honed to a superb finish

So inherently our 81X rooftop chains will have the SBR feature

This 6220 ball bearing is a high-precision premium quality deep groove 100x180x34 ball bearing made to ABEC 3 precision standards from AXIS

Dynamic Load Rating: 2120 LBS

AK89 Pulley 1-1/8" Bore filter_35BS40-FB the 6317-ZZ bearing features racewaysThis AK89 Pulley 1 1 8" bore is directly interchangeable with other manufacturers, is 8. 75" in diameter, is used with A style V Belts, and is manufactured in accordance with ARPM Standard IP20 for safe operation. What separates this AK89 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 strength and is more wear