60B8H sprockets with a stock bore comes with the standard 5/8" ID hole with no keyway or set screws and can be easily machine bored to custom sizes
This 80BS25 sprocket features a 1-7/16" finished bore with a key-way and two set screws
SSUCTPF205-14 Bearing Dimensions
What separates this 2TB54 pulley from the others is that it is made using a high grade-35 cast iron
BK80 Pulley 1-7/16" Bore filter_60B11-SB 60B8H sprockets with a stockThis BK80 Pulley 1 7 16" bore is directly interchangeable with other manufacturers, is 7. 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 BK80 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