3 "Don'ts" for Surface Grinding

In recent years, there have been significant advancements in tools and machines used in various industries. We’ve heard of high-speed diamond grinders and other flashy machines that make our work a lot more efficient and less difficult to perform.


As modern machines pop up at fast rates, many contractors have hopped on the bandwagon. They believe that by using the fastest and biggest machines, they can keep up and even stay ahead of the competition.

But whether you are using the most advanced machines or even the most rudimentary tools, it’s important that you familiarize yourself with everything in your inventory.

By doing so, you can provide the right solutions for any application difficulties instead of getting distracted with the shiniest and newest machines.


Here are the most important DON’Ts you need to know about when it comes to the use of surface grinding machines and other similar equipment.

Also Read: Things You Should Do before Surface Grinding

The Big “Do Not” About Surface Grinding


Utilizing Incorrect Power Sources

This may be obvius enough but it bears repeating here. See to it that the unit you are using has the correct power source.

Grinders that are engine-powered are normally best option when it comes to outdoor applications, since these units won’t work at an outdoor location where there is a lack of electrical outlets.

On the other hand, machines that are electric powered won’t work at indoor locations which are missing the correct electrical power. The ideal solution would be a propane-powered machine.


Units that are electric powered usually have high voltage and amperage requirements, which is why it is important to know whether your equipment needs a 230-volt or 115 volt power source.

You also need to be aware if it needs a 20- or 15-ampere circuit. You’ll know this information simply by looking at the electric motor data plate.

If the machine requires an extension cord, it should be measured to allow adequate electrical flow based on the specifications of the motor. Pick a cord that is longer than what is needed, as cord length impacts electrical voltage loss and resistance.


Wrong Attachments

Manufacturer help desk representatives often receive calls from operators who are not happy with surface grinder’s outcome. But the thing is, their dissatisfaction often stems from the use of an improper attachment.

For example, one among the widespread mistakes is making an attempt to use silicon-carbide stones to get rid of grind floor coatings.


The stones can work briefly before their pores clog with material. When this happens, they are no longer effective. You’ll need scraper attachments for this. Conversely, scrapers won't work once making an attempt to eliminate concrete.

In the last few years, many kinds of attachments have been created for various applications, and most makers post data on their websites concerning the right use of these attachments. Sadly, a lot of end users fail to teach themselves and, as a result, fail to realize the results they desire.


Lack of Maintenance

Low-speed surface grinders square are easy to operate, use and maintain. Apart from regular engine maintenance for units that are gas-powered, there aren’t several parts that may require servicing.

However, due to the abrasive concrete that mud grinders make, these things will require some crucial lubrication to be able to work efficiently for a long time.

One of the most common things that go unnoticed is to lubricate the transmission bearings. The issue exists due to the lack of maintenance from personnel in getting rid of excess concrete mud accumulations in the bearings.


Over time, the grease fittings will no longer be visible, and dirt will keep on contaminating the bearings. This will eventually lead to total bearing failure, which can consequently damage transmission parts that are very expensive to replace.

To combat this issue, a few manufacturers equip their machines with a remote lubrication system that is designed to make maintenance much simpler.

However, even this may not be enough. So always see to it that the bearings are properly lubricated within schedule. Another important maintenance requirement is the attachments of the surface grinder.

These things are vital to your operational success, so see to it that they wear equally and replace them when you see that the contact surface is close to the attachment discs. The attachments varies in service lifespan so it’s important to have an idea of how long each one will last.

For example, one might estimate that a set of carbide grinding stones could last as long as 5,000 square feet, but a diamond system might be able to cover as much as 50,000 square feet before it will require replacement.

Additional Don’ts for Surface Grinding

  •  If the grinding wheel was subject to impact (ie it was dropped), do not use it.
  • Do not use a grinding wheel that has any abnormality.
  • If the grinding wheel’s hole diameter does not match the machine, avoid forcing the wheel into the machine.
  • Do not go beyond the maximum operating speed as indicated on the grinding wheel.
  • Do not over-tighten the nuts when mounting onto the flanges.
  • Do not start the machine prior to installing the cover of the grinding wheel.
  • Do not press the workpiece against the wheel using excessive force.
  • Do not touch the grinding wheel directly when rotating.
  • Don’t stand in front of the wheel during a test operation.
  • Do not place the grinder onto a workpiece, floor, table or any surface before the grinding wheel has stopped completely.
  • Unless you have received the necessary training, do not change the grinding wheels. You should also not perform any test operations.
  • Don’t use the machine in an area where there is a risk of explosion.

Final Verdict

A surface grinding machine can make your job very efficient and productive. But it’s important to know the safety guideline to avoid injury to the operator and damage to the machine.

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