I have an LNS bar chamfering machine. The cutter head spins. It is supported on the outside of the head by a large bronze bushing. That bushing goes inside a housing (painted yellow in the picture below) that is fixed to the frame of the machine. The bushing is severely worn out, and I need to replace it. I can't seem to buy one from the manufacturer, so I'm going to make my own out of a cast 660 bronze bushing that I can purchase and modify a bit. The ID needs to be counterbored and a groove put in the bore for a retaining ring that keeps the bushing on the cutter head. I'm looking for ideas on how to lubricate between the cutter head and the bushing. I can apply grease to the OD of the bushing, but it looks to me like the cutter head should spin in the bushing, not that the bushing and cutter head spin in the housing. I could be wrong here, though. The existing bushing is so worn that I can't tell what's what. I can't put a grease fitting on the OD of the bushing because the entire OD slides into that yellow housing. There is not enough thickness of the bushing to recess the grease fitting. It would be a pain (and therefore probably not done) to have to remove the bushing to grease the ID of it. So how would you go about making it easier to grease this? Hopefully the pictures below help explain the things I couldn't with words.
Also, would grease grooves on the ID be a good idea?
Also, would grease grooves on the ID be a good idea?