Today I pick up a commercial grade Dayton grinder. It's in great shape and starts the matrix wheels in I'd say 2 seconds, very quiet, and no vibration. Quite a step over my 1/4 horse Craftsman. I want to install probably two CBN wheels on this beast.
I see a majority of turners choose 80/180 grit combo if purchasing two CBN wheels (if there are others that chose different combo please comment advantages/disadvantages).
Looks like most purchase from D-Way or Woodturnerswonders and the latter supplier offers a 4 in 1 wheel. For those that have it is it worth the extra cash?
I would like to possibly use both halves of the wheel cover for dust control. I realize depending which jig system I use this may not work. But looking for ideas and suggestions from others how this would best be done.
My grinder has a 5/8" shaft with a step. As received there was a bushing with a flange that slid over the larger diameter step with flange facing outward. When I slide on this bushing it seems to stop at the inner race of the bearing and the face of the flange is proud of the step on the shaft. Then there is a cupped large diameter washer that stops against the bushing flange and has a small keyway that seems to be driven by the small roll pin in the 5/8" shaft. Next the wheel goes on then a large cupped washer and nut.
I'm wondering why the fanged bushing is used? Seems like the inside cupped washer could be stopped by the step on the shaft and still driven/guided by the roll pin????
To me looks like I need to get rid of the roll pin and add about a 1/8" thick washer against the step on the shaft (or apply that flanged bushing and the washer stops against it), CBN wheel, washer (maybe spherical assembly), and nut. This would allow space to use the outside wheel cover. Or am I looking at this wrong and need to apply some other hardware?
Do I need the roll pin and inner cupped large washer with keyway? Or can I get rid of the roll pin and use friction to spin/drive the wheels? Doesn't look like other grinders use a key or pin to drive the CBN wheels that I have seen on youtube or suppliers web sites.
(Reed Gray has helped me a quite a bit with my questions by PM but thought my questions could help others in the future by posting here)
Thanks,
Mike