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Sprocket Size: 100BS18
120B28H sprockets with a stock bore comes with the standard 1-1/2" inside diameter hole with no keyway or set screws and can be easily machine bored to custom sizes
CSB209-28 bearing is a light-duty ball bearing insert made to C3 precision standards and utilizes set-screws to secure to a 1-3/4" shaft
This 40BS28 sprocket featured a 1" finished bore with a key-way and two set screws
HC210-30 bearing is a normal-duty ball bearing insert made to C3 precision standards and utilizes an eccentric locking collar for securing a 1-7/8" shaft
BK80H Pulley single-groove 7.75" OD filter_50BS14-FB Sprocket Size: 100BS18This BK80H Pulley uses an H Series Bushing, is directly interchangeable with other manufacturers, is 7. 75" in diameter, and is manufactured in accordance with ARPM Standard IP20 for safe operation. With AK series pulleys you can use A, 4L, B, 5L, AX, BX, AA, and BB belts. What separates this BK80H 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
