hanermo
Titanium
- Joined
- Sep 28, 2009
- Location
- barcelona, spain
I need to make bearing fits to very good levels.
2-3 microns. Abec9 bearings.
Timken, SKF et al say its gotta be +0.000/-0.002-4.
25.000 mm nominal shaft, mics 3-6 microns oversize.
I thought about getting some diamond grits, and making a brass lap.
To say 24.990, doable for me with a lathe.
Split lap, then squeeze the lap with opposed bolts like a 4-jaw chuck. One bolt in and one bolt out, to control it.
Use some diamond lapping compound.
Does this make sense ?
I dont have a sufficiently good internal TP grinder.
I can buy a Nakanishi, but thats 2500€.
These are prototype, about 4, in different sizes and with different bearings.
Any advice, experiences, recommendations re: lapping and or diamond compounds ?
American lapping wants about 2000$, plus taxes to me, so thats about 3000$ by the time its here.
(Internal an external, 2 sizes.)
2-3 microns. Abec9 bearings.
Timken, SKF et al say its gotta be +0.000/-0.002-4.
25.000 mm nominal shaft, mics 3-6 microns oversize.
I thought about getting some diamond grits, and making a brass lap.
To say 24.990, doable for me with a lathe.
Split lap, then squeeze the lap with opposed bolts like a 4-jaw chuck. One bolt in and one bolt out, to control it.
Use some diamond lapping compound.
Does this make sense ?
I dont have a sufficiently good internal TP grinder.
I can buy a Nakanishi, but thats 2500€.
These are prototype, about 4, in different sizes and with different bearings.
Any advice, experiences, recommendations re: lapping and or diamond compounds ?
American lapping wants about 2000$, plus taxes to me, so thats about 3000$ by the time its here.
(Internal an external, 2 sizes.)