Unison Dedtru centerless grinder through feed operation - Wheel recommendation

[OMTRandy]

Hi, I recently purchase a Unison Detru centerless grinder to use the through feed process to grind in the OD of some 4" long 1144 stress proof blanks to 0.4995 +/- 0.0005; and to grind in the OD of some 1" long 303 stainless steel blanks to 0.620 +/-0.0005. Can someone recommend the correct wheel size, type, grit, and bond for this application and these materials? Thank you!

 

[RJT]

Depending on your wheel guard either a 7 or 8" by 1/2 by 1 1/4 is what we use most of the time for through feed. If the 1144 is soft, 46 H, if it is hard 60J or 80J. For the stainless you need a very porous open wheel, nothing works great, but i would start with 46H. There are wheels specifically for stainless, but we have not had great success with them. They don't load up, but they don't stay dressed long either.

 

[OMTRandy]

Thanks RJT! I will start here and see how it goes.
I bought the Tech Cool 3718 coolant that Unison sells but haven't filled the tank yet. What coolant/oil are you using in your shop?

 

[RJT]

We use Q-Cool 322 grinding coolant.