This 80BS18 sprocket features a 1" finished bore with a key-way and two set screws
Dimension (Z): 2-1/16"
For more information on a triple groove 3TB38 pulley
the R8-ZZ bearing features raceways that are precision honed to a superb finish
50SDS36 sprockets are manufactured to accept a SDS type QD bushing which
BK120 Pulley 1" Bore 5B QD Bushed Pulleys This 80BS18 sprocket features aThis BK120 Pulley 1" bore is directly interchangeable with other manufacturers, is 11. 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 BK120 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