Hole Width: 13/32"
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UCFA210-31 Bearing Dimensions
This 40BS33 sprocket features a 5/8" finished bore including a key-way and two setscrews
For more information on an AK184H Pulley
BK67 Pulley 1" Bore American Standard Roller Chain Hole Width: 13/32"This BK67 Pulley 1" bore is directly interchangeable with other manufacturers, is 6. 45" 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 BK67 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