Pulley for R&P with 19mm Bore


I am building a 5x10 machine using servo motors that have a 19mm shaft. The pulleys that came from Avid have a 1/2" bore. I have tried to enlarge the bore on my lathe with little success.

Does anyone know where I can purchase the same pulley with a larger bore to accept a 19mm shaft?

Thanks in advance


Sorry, I’m kind of slow. What motor has a 19mm shaft? That would be much larger than NEMA 34, right?