This 100BS23 sprocket features a 2-15/16" finished bore with a key-way and two set screws
UEF206-19 Bearing Dimensions
Bearing Size: 6318-2RS
Sheave Size: 25V2360E
SA209-27 Bearing Dimensions
2BK65H Pulley double-groove 6.25" OD 2AK26 Pulley This 100BS23 sprocket features aThis two groove 2BK65H Pulley uses an H Series Bushing, is directly interchangeable with other manufacturers, is 6. 25" 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, BB, and banded belts. What separates this 2BK65H 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.