yes same wheels as before and it did the same before
Sears Craftsman Bench Grinder - any worth?
- Thread starter freebo86
- Start date
yes same wheels as before and it did the same before
A video would help, but it's going to shake and vibrate with no isolator mounts when wheels are installed.
larry4406
Well-known member
The original rubber feet look like this
Lowes has ones that are near identical. I can't find the part number at the moment.
Lowes has ones that are near identical. I can't find the part number at the moment.
RoninB4
Well-known member
-Maybe but not a guarantee. The perceived vibration is a relative description, there's going to be some with a bench grinder that's not mounted. The mass of the grinder has a lot to do with absorbing vibration, yours doesn't look like it has much mass. Have you put an indicator on the shafts to determine if they run true? IF the bearings are good then how well the wheels are balanced has a lot to do with the vibration. Many types of grinders (surface grinders, pedestal type tool grinders, tool/cutter grinders, etc,) have very little perceived vibration. Bench grinders all have some vibration present because of the lack of mass. If your grinder is bouncing on the bench then that's excessive. The less mass the greater the need to use anti-vibration measures.
-For rough grinding more vibration is acceptable, for fine grinding (cutting edges) then it becomes more important. Vibration and improved surface finish can be accomplished. How important is this to you for what you're doing? Try the rubber feet and report back.
This style is what you want for a craftsman block grinder.The original rubber feet look like this
Lowes has ones that are near identical. I can't find the part number at the moment.
larry4406
Well-known member
The original rubber feet look like this
Lowes has ones that are near identical. I can't find the part number at the moment.
The clone rubber grommets at Lowe’s are made by Hillman. Pictures of package and grommet from my stash.
These are in the hardware section in the various drawer bins.
Exact as far as I can tell. Learned about it on this site.
Well I picked up the $2.99$ stuff and cut the head as a slot and surprisingly they fit well, lol.
Here is a video of the machine running. The wheels look out of round, I do see a wobble. I did the ring test on the wheels and they’re good.
Thoughts? Is this excessive?
Garage floor test
Bench test
Here is a video of the machine running. The wheels look out of round, I do see a wobble. I did the ring test on the wheels and they’re good.
Thoughts? Is this excessive?
Garage floor test
Bench test
RoninB4
Well-known member
-It does "walk" when it's slowing down, that does suggest an problem that could be attended to.
-Did you put an indicator on both shafts to check for runout (power off and unplugged).
-For some it's tasks it's ok, for grinding woodworking tools with a sharp edge.....no. You can attempt to balance the wheels (off the grinder spindle), then dress them accordingly. There are also better elastomers and mounting the grinder that should help but it's really about what the task is and how much effort returns the result you want/need. It doesn't look horrible but it could probably be better. This is a bench grinder and, like everything else, there's a point of diminishing returns that only you can decide. Test and post results.
Check salt a
so I’ve learned that I shouldn’t put the shaft nut on with a impact
so I may have warped it I guess..
I’ll see what I can do, like I said I may swap one of the wheels for a 7” wire wheel it would serve me more than 2 grinding stone wheels. Was going to grab this -
so I’ve learned that I shouldn’t put the shaft nut on with a impact
so I may have warped it I guess.. I’ll see what I can do, like I said I may swap one of the wheels for a 7” wire wheel it would serve me more than 2 grinding stone wheels. Was going to grab this -
RoninB4
Well-known member
-No you should NOT use an impact for the spindle nuts.so I’ve learned that I shouldn’t put the shaft nut on with a impact
That's a good way to overstress the grinding wheels and cause a fracture in the wheel that explodes at startup. One side should be a left-hand thread, the other side should be a right-hand thread. This is done so that wheel rotation direction prevents the nuts from getting loose. A moderate amount of finger pressure on a wrench/socket applies sufficient pressure to keep the nuts adequately tight. With precision surface grinders the only wrench ever used is about 6"-7" long, a surface grinder will spin up more RPM than a bench grinder and that short wrench is what almost everybody uses. If I had to take a WAG then about 22-25 ft./lbs of torque is average. You want to use the paper blotters I've posted about before to avoid metal to grinding wheel contact.-If you've warped the metal disc from over-tightening then do replace it.
Cruzan80
Well-known member
If you used an impact, I would not trust the wheels AT ALL! Too high of a chance of introducing small fractures that can shatter it later.
I have seen people run the nut down with an impact if they were using one side without a wheel, just to check balance on the other. That is the only (possible) reason for an impact here, IMO. I dont like to even use one for loosening (not worth the risk to me).
I have seen people run the nut down with an impact if they were using one side without a wheel, just to check balance on the other. That is the only (possible) reason for an impact here, IMO. I dont like to even use one for loosening (not worth the risk to me).
-No you should NOT use an impact for the spindle nuts.
-If you've warped the metal disc from over-tightening then do replace it.
