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What sets this 5309-ZZ bearing apart from others is the ABEC 3 precision standard that this bearing is made to
Roller Width (R): 7
Outside Diameter: 20
The superior quality stamped steel housing encases a performance C3 precision 1/2" insert bearing that utilizes an eccentric locking collar for securing onto a shaft
This two groove 2BK50H Pulley uses an H-Series Bushing
BK62 Pulley 7/8" Bore 76-Tooth Sprocket What sets this 5309-ZZ bearingThis BK62 Pulley 7 8" bore is directly interchangeable with other manufacturers, is 5. 95" 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 BK62 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
