Top 10 Best 125mm Sander 2023 - Buyer's Guide Best Picks

The vetting process is tightly controlled by writers and senior editors to help buyers make an educated guess and find the best choice, we have assembled the Best 125mm sander in one list. You may be interested in popular brands below: Makita, Maxxt, Hyperpower, Powertough, Walfront, Baiwen, Mirka, Bosch, Dewalt, Xtract.

James Essinger By, James Essinger
  • 4.3pcs sander paper,1pc sander wheel and one dust bag
  • 3.6 step speed 5000-10000rpm,ergnormic design
  • 1.A perfect home tools for polishing, clears away materials like paint, stain, and varnish. 6 step viable speed adjustable for different task job.Quick change sander paper, good handling vibration,and easy empty dust bag,all make tools agreeable using.And cordless feature enable tools to be used at any time any places.
  • 【WORK IN THE DARK ENVIRONMENT】: The front work light of the lithium battery sander is convenient to work in the dark environment.
  • 【GOOD HEAT DISSIPATION】: The air-cooled motor of this polishing machine has good heat dissipation capacity and a longer life.
  • 【SMALL SIZE】: The body of this polisher is small and hand‑held with one hand for more comfortable operation.
  • New version, high strength, wear resistant, long service life
  • High Speed and Powerful, universal sanding machine,use for Construction,Automobile and other fabrication,Manufacuring and repair industries,Mold industry and Woodworking and furniture manufacuring Uses standard hook and loop sanding paper of your choice.
  • Air Inlet:1/4", hook and loop sanding pad:5", Free speed: 12,000 RPM,Average air consumption: 10.5 CFM;Air Pressure: 90 PSI
  • Professional-grade sanding performance: The Mirka DEROS 650CV random orbit sander boasts a high-powered motor that delivers efficient sanding, making it ideal for large and small-scale sanding jobs.
  • Versatile functionality: The DEROS 650CV is compatible with a wide range of sanding discs and abrasives, making it suitable for a variety of materials and applications.
  • Technical Highlights of Mirka DEROS 650CV: Brushless powerful electric motor technology, Ø 6’’ (150mm), Oscilation / Orbit 0.2'' (5.0mm) a universal and balanced choice between aggressive work over lage areas and fine finishes and sensitive work, 110V, only 2.4 lbs (1.1kg), Variable speed control, Bluetooth connectivity to connect with the MyMirkaApp
  • Ease of use: Get fast, smooth finishes on a variety of surfaces
  • Multi-hole pad system – allows flexibility so tool can use a wide variety of abrasive discs
  • Passive dust collection system: Passive dust collection system that requires a vacuum cleaner and hoses; Accepts Bosch VAC001, VAC009 and VAC010 hoses (sold separately) or a Bosch VAC002 hose adapter (included)
  • Low-profile height of the power sander allows user to get close to work surface for precise sanding.
  • Dust-sealed switch to protect against dust ingestion for long switch life.Texturized rubber overmold grip for comfortable sanding.One-handed locking dust bag..Dust port is designed to fit directly to the DWV010 or DWV012 dust collectors (sold separately).To attach dust port to other vacuum systems with 1-1/4-inch hoses, use DWV9000 Universal Quick Connector (sold separately)..PSA replacement pad available as service part number N373679 (Sold Separately)
  • Orbital sander with brushless motor provides runtime and efficiency to get the job done
  • HIGH QUALITY ELECTRIC ROS: Built with high-quality components that stand up to long hours on the shop floor
  • SAFETY FUNCTION: Automatically switch to "Stand-By" mode if left un-used for 5 minutes
  • PART OF THE 3M XTRACT CLEAN SANDING SOLUTIONS: When used with 3M Xtract Net Discs and dust extraction, the sytem extracts up to 97% of the dust created during sanding
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Disc Size

DIYers use random orbital sanders that take 5-inch disks. This is the ideal size for fine sanding, without leaving swirl marks or scratch marks. You can also find sanders with 6-inch discs. These are ideal for heavy-duty sanding jobs when you don't care about the finish.

Power Level

The motors in most corded random-orbital sanders that DIYers use have a power range of 2 to 5 amps. It's enough power for most tasks but not too much that the tool is difficult to control. However, there are also more powerful random-orbital sanders that are great for rough sanding.

The cordless random orbital grinders can be powered by either an 18-volt, or 20-volt, battery. The power difference is not that great, but the 20-volt battery gives it a slight edge.


The speed of a random orbital sander is measured in orbits-per-minute (opm), which indicates the speed at which it performs its tiny oscillations, not in the more common revolutions-per-minute (rpm) measurement used for many other power tools.

Most random orbital sanders (especially lower priced models) have only one speed. This is usually between 10,000 opm to 13,000 opm. The higher-end models often come with variable speeds. These tools usually have a range of speeds between 7,000 and 13,000 opm. Slower speeds are good for delicate work or fine sanding, while faster speeds are better for aggressive sanding and removing paint from wood you intend to refinish or paint.

Dust Collection

Sanding is a dusty job, whether you use a power or hand sander. Dust can be hard to breathe, and can cause irritation to your eyes. It can also clog up your sander. This can make it harder to get a smooth finish on the wood that you are sanding. Kuhl says, "Be sure that you choose a sander with a dust collection system." This will keep your work area clean and minimize airborne particles. It can also keep your sandpaper clean and help you avoid the dreaded "sanding swirls" or pigtails.

The tool is usually equipped with a dust collector box or bag. It's important to regularly empty the dust collector. Even the best dust collection systems are unlikely to capture every particle of dust. Wearing eye protection and a dust mask is recommended when using a random orbital sander. Some random orbital sanders come with a dust collection box or bag, but others require that you purchase this separately. Check before purchasing your sander.

Power Source

There are three types of random-orbital sanders, each with a different power source: plugging into an electrical socket, using a rechargeable batteries, and air-powered. Professionals in automotive or carpentry shops use air-powered tools, whereas contractors, remodelers and DIYers prefer corded and cordless sanders.


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1. What Is A Random Orbital Sander Used For?

Random orbital sanders can be used to sand flat surfaces. They are often used in the garage or at work for a variety of tasks, including removing paint, removing rust and smoothing out small patches of drywall. Random orbital sanders are great because they don't scratch or mar wood grain.

The random orbital sander is primarily used for wood. However, it can also be used to sand other materials, including metal. The tool can be used on plastic and drywall.

2. Are Random Orbital Sanders Better Than Sheet Sanders?

It can be confusing to choose the right sander for your specific needs. Random orbital sanders can be confused with sheet sanders because they are both called palm sanders.

The sheet sander uses a rectangular piece of sandpaper instead of a circular disc. It moves the sandpaper back and forth, as opposed to the random orbital sander's spinning. These two tools are similar but have slightly different purposes. The sheet sander can be used for fine detail work, or to sand along the edges of wooden surfaces, while a random-orbital sander works best for large, flat wood surfaces.

A sheet sander also uses a simple back and forth motion. You must be very careful to sand in the direction of wood grain, to avoid swirls or imperfections. A random orbital sander, on the other hand, rotates the sandpaper disk in a circular motion while adding a slight oval oscillation. The sandpaper is not able to follow the exact same pattern on each pass. This reduces the number of swirl marks and other obvious sanding defects on the final wood. This means you do not have to be as cautious to sand the wood with the grain, although it is always best to do so for the best possible results.

Detail sanders - which are essentially sheet sanders but with a rounded front edge - are useful for sanding in corners and other hard to reach places. Belt sanders - which feature a loop of paper that spins between two rotating drums – are also common. Belt sanders work well for rough, fast sanding but don't have the finesse of the smaller sanders.

3. Does A Random Orbital Sander Leave Swirl Marks?

The best thing about a random-orbital sander is that, unlike older orbital sanders that rotated the sandpaper in a circle rapidly, the newer tools include a "wiggle", creating a random motion that never moves the same way over the surface of wood. It means that if you choose to sand the wood against its grain instead of along it, as is often recommended, you will not create swirl marks or other imperfections on your final wood surface.

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James Essinger By, James Essinger