g90_zero
Plastic
- Joined
- Sep 27, 2019
Hello everyone,
After many hours of searching I have finally came to the experts to ask this question. I have a new to me Chevalier 2 FSG-2A20 Surface grinder. After getting it hooked up and leveled. We did a quick test grind on a block and noticed some wheel hop... pretty much the same hopping that is on the chuck from when the previous owner had "tried to grind in the chuck". So I did some further investigation. I put a .0001 indicator on the spindle nose and I'm getting .0008-.001" runout. How bad is this? And could it be due to loose preload on the spindle bearings or just bad bearings? The reason I'm asking this is because when rotating the spindle back and forth it feels like it takes the spindle a 1/4 revolution for the spindle play to catch up like having rotational play.( Best I can explain.) I've attached links to the videos of the runout as well as the spindle rotational play and a picture of the mag chuck in it's current condition. Any help is GREATLY APPRECIATED.
YouTube
YouTube
Thanks guys. J
Sent from my SM-N960U using Tapatalk
After many hours of searching I have finally came to the experts to ask this question. I have a new to me Chevalier 2 FSG-2A20 Surface grinder. After getting it hooked up and leveled. We did a quick test grind on a block and noticed some wheel hop... pretty much the same hopping that is on the chuck from when the previous owner had "tried to grind in the chuck". So I did some further investigation. I put a .0001 indicator on the spindle nose and I'm getting .0008-.001" runout. How bad is this? And could it be due to loose preload on the spindle bearings or just bad bearings? The reason I'm asking this is because when rotating the spindle back and forth it feels like it takes the spindle a 1/4 revolution for the spindle play to catch up like having rotational play.( Best I can explain.) I've attached links to the videos of the runout as well as the spindle rotational play and a picture of the mag chuck in it's current condition. Any help is GREATLY APPRECIATED.
YouTube
YouTube
Thanks guys. J
Sent from my SM-N960U using Tapatalk