[TowerTalk] Pulley Bearing

[Wilson Lamb]

Is it a sleeve bearing?  Must be if that wide.  How is it broken? 
If so, easily pressed out, maybe with a big C clamp or vise. 
Push with a socket or rod that just clears the pulley ID. 
Catch with a socket that just clears the bearing OD, or a piece of pipe. 
Lowes and HD have sleeve bearings that can be ordered, might have your size. 
For a wide sheave, you can use two pieces of bearing.  I'd cut them to be equal and the pair fill the bore. 
I just rebuilt an old block just this way. 
WL