This is my first time broaching.
I am broaching a keyway slot in a pulley bushing. The hole is 1 3/8 and the slot is 5/16". The reason for needing to broach is that I had to bore this pulley from 1.25" to 1 3/8", to accommodate a larger motor shaft.
I am finding it difficult to do with a 3 ton press. It does work, but I feel at the edge of this press's capability. I am concerned that, perhaps, I am doing something wrong, or the broach is dull. So, my question is, what would be a normal force required for broaching iron bushings with a 5/16 broach. The bushing is about 2 inch deep.
I am using tapmagic cutting fluid.i