Bench Grinder: Grinding or Squealing Sound

If your bench grinder is making squealing or grinding sounds, then check the adapter. If the shaft size adapter in the wheel born is worn out, then it can cause odd noises. Replace the adapter to fix this problem.

If you turn on your bench grinder and it makes squealing or strange noises, check the bearings to see if they have been worn out. To repair, first remove the screws to get the hubs off. Next, check if the shaft of the motor is loose. If it is, remove it by pulling it out from one end. There are bearings on each end of the shaft, and if they are both worn out, you should replace both. Remove bearings from either end and hammer in the new one onto the shaft. You can now reassemble your grinder by placing the shaft back in and securing it by placing the hub back on. For more installation instructions, refer to the manual provided by the manufacturer. Tip: make sure to purchase bearings with the right measurements to ensure the shaft is secured.

If the spark guard in your bench grinder is in contact with the grinding wheel, it can cause the tool to make grinding, squealing, or generally odd noises. The spark guard can be put on either end of the handles on your bench grinder as a safety precaution and to prevent sparks from flying.

If your bench grinder is making grinding or squealing noises and your bearings are new and working, then check the grinding wheel. If the grinding wheel is loose on the shaft, then it can cause it to make odd noises. To replace the grinding wheel, first, make sure you unplug your grinder from the power source. Next, unscrew the shield that surrounds the wheel. Next, locate the center arbor nut and using a wrench unscrew the nut whilst holding the wheel to prevent it from rotating. To install your new wheel, slip the hole over the shaft and press the washer into place. Now you can add the nut onto the shaft and tighten it.

If the tool support in your bench grinder is in contact with the grinding wheel, it can cause a grinding or squealing sound. Replace your support in your grinder to fix this problem.