What sets this 5313 bearing apart from others is the ABEC 3 precision standard that this bearing is made to
While the phosphate coated and then painted finish adds corrosion resistance to the AK114 pulley
which insures proper contact between the #140 roller chain and sprocket thus preventing premature wear or breakage
Dimension (w): 3-1/2"
the 5310-ZZ bearing features raceways that are precision honed to a superb finish
BK130 Pulley 1-7/16" Bore 100B18 Sprockets What sets this 5313 bearingThis BK130 Pulley 1 7 16" bore is directly interchangeable with other manufacturers, is 12. 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 BK130 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