10 Best Spindle Sander Reviews in 2020

Been looking for a spindle sander to achieve success in detailed sanding tasks? Need to sand plenty of curved edges, inside hole cuts, and flatten ugly saw marks? Well, spindle sanders are designed to prevent any form of static friction and in turn, avoid band marks on the surface being sanded. Based on your purpose of usage, you can choose between varying motors, frame construction, sleeves, noise levels, dust collection, etc.

Remember, a disc and belt sander cannot help in performing precision cuts needed for round surfaces or surfaces with random angles. But the best spindle sander erases the drawbacks of manual sanding and helps smoothen edges to the pinch of artistic elegance.

Spindle sanders with several OPM (Oscillations Per Minute) options are a great choice as you can alternate the sander’s effectiveness during different applications. Whether you want a bench-top, hand-held, floor model, portable, or an all-in-one oscillating spindle sander, either of them will offer the same functionality, but with alternating degrees of comfort.

Planning to install a jungle gym or an eye-catching wooden swing set in your backyard? Been brainstorming how to beautify and enhance the visual traits of your DIY gazebo project? Choosing the best spindle sander will help you achieve captivating symmetry and perfectly evened out looping and spiral designs.

Our Top Choice

We would choose the WEN AT6535 Oscillating Spindle Sander as our top choice. Boasting of a 5/8-inch stroking ability with a 2000 RPM motor, this spindle sander’s bevelling table also assists in working on angled surfaces.

Buyers are gifted with four rubber sanding drums, five 80-grit sanding sleeves, and also a 2-year warranty. Hands down, the fact that this sanding equipment comes with 5 varying sanding sleeves of project-centric sizes, makes this the best spindle sander in our list.

Comparison Table & Runner Ups


Top Feature

  • WEN AT6535 3.5-Amp Oscillating Spindle Sander
  • 2000 RPM motor makes the spindle oscillate 58 times per minute
  • Weighs 33.2 pounds
  • Large bevelling table

2. Makita BO5030 5” Random Orbit Sander

  • Spindle speed and belt speed of 2000 RPM and 1575 FPM respectively
  • Weighs 27 pounds
  • 5 varying spindle sanding sizes

3. WEN HA5932 5-Amp Variable Speed Spindle Sander

  • Variable speed motor
  • Portable
  • Weighs 6.64 pounds

4. Triton TSPS450 Cast Iron Oscillating Spindle Sander

  • Longer life of sanding sleeves
  • Rigid cast-iron offers strong support
  • 120 V and 3.5 Amp motor

5. Shop Fox W1831 ½ HP Single Phase OSS

  • Sleek and minimalistic construction
  • ½ horsepower permanent magnet motor
  • Locking power switch

6. EJWOX Portable Handheld Oscillating Spindle Sander

  • Keyless bolt locking mechanism
  • 6 variable speed choices
  • 650 W portable handheld sander

7. Grizzly Industrial G0538 Oscillating Spindle Sander

  • 1/3 horsepower
  • Industrial grade spindle sander
  • 1725 RPM single speed motor

8. POWERTEC OS1400 Benchtop Oscillating Spindle Sander

  • 2.6 amp induction motor
  • 2/5 horsepower
  • Solid construction with epic onboard storage design

9. Shop Fox W1846 Benchtop Oscillating Spindle Sander

  • Cast iron table – 18” diameter
  • Spacious onboard storage design
  • Weighs 50 pounds

JET 708404 JBOS-5 Benchtop Oscillating Spindle Sander

  • Titled worktable for bevel sanding
  • ½ horsepower
  • 1-inch spindle

10 Best Spindle Sander Reviews

Being an occasional or even a frequent woodworker calls for up to-the-mark sanding equipment. One must consider a dozen of factors when looking for a spindle sander. For example, home-based DIY projects can do with a bench-top or hand-held model, whereas floor-standing spindle sanders can be used for commercial projects.

If you’re looking for something for a diverse range of applications, look for a portable spindle sander where the spindle (popping out from below) oscillates at varying speeds. Such sanders’ architecture promotes efficient sanding techniques, with minimal power consumption and assurance of visually-pleasing results.

We have prepared this buying guide that showcases detailed descriptions of the ten best spindle sanders available in 2020. Each of the below-mentioned spindle sanders is explained with critical features, upsides, downsides, and crisp product descriptions.

1.WEN AT6535 3.5-Amp Oscillating Spindle Sander

The all-round specifications of this product are in favor of the majority of carpenters and professional sanders. One can use either of the five sanding spindles provided, each offering a unique size. This helps in working on contours, rugged curves, non-uniform arcs, and even crown molded surfaces.

Credits to the ergonomic built of this spindle sander. It houses little sections on-board to organize the additional sanding equipment, including the ten throat plates, four rubber sanding drums, or table inserts. This brings comfort to the working environment while also reducing the hassle of searching for accessories time and again.


  • Table can be adjusted between 14 to 14.5-inches
  • Bevel can be adjusted to anything between 0 and 45-degree angles
  • Port to attach a dust collection system
  • Accessories to immediately start work are provided
  • Onboard storage facilities

Comprising of an optimal performance motor measuring 3.5 amps, the spindle sander can jolt around 2000 spindle movements in a minute, all this coupled with an oscillating speed of 58 spindle oscillations per minute. 

The beveled table offers a desirable degree of flexibility, allowing users to sand intricate surfaces, ridges, grooves, and even cylindrical shells’ insides.

Top 3 Features:

1.  Extra Large Bevelling Table

Not only do users get angular freedom, but also plenty of sanding surface area to execute projects at a quicker pace. This is due to the generous amount of space provided by the 14 by a 14.5-inch bevelling table.

2.  Oscillating with a 3.5 Amp Motor

The powerful motor is equipped to make the most of the oscillating features of this spindle sander. Each of the five differently sized sanding spindles can oscillate at a minimum of 58 times per minute, along with 5/8-inch stroking.

3.  one ½-inch Dust Port

Can’t deal with sanders that have no arrangements for a dust collection system? This spindle sander possesses one ½-inch port that lets users attach a dust collection system, reducing cleaning efforts after a completed project.


  • Backed by a 2-year warranty period
  • Oscillations are smooth and do not obstruct your grip
  • Durable 80-grit sandpaper sleeves
  • Table is made of cast iron
  • Table can be smoothed further with a coat of paste wax


  • Tabletop can rust easily if not maintained
  •  Spindle nut can become too tight

2. WEN 6524 Oscillating Belt and Spindle Sander

Carpenters would die for a sander that has a combination of belt and spindle sanding mechanisms. This two-in-one feature makes it a top choice for woodworkers who keep switching between a range of sanding tasks.

While the sanding spindles are available in 5 sizes, the belt sander offers a big enough four by the 24-inch belt. All this is powered by a 3.5 amps motor that fires the belt to a speed of 1575 FPM and the various spindles to about 2000 RPM.


  • five spindle sanding papers with varying diameters
  • One 80-grit sandpaper for the belt
  • Port for attaching a dust collection system
  • Adjustable bevel table

Switching between belt to spindle can be done within 60 minutes. Simply remove the nut from the top to detach the belt assembly. Be warned, and there are different nuts for installing each of the sanding mechanisms, namely the drum and the belt.

Each added component of this spindle sander has neat slots and holders attached to the sander itself. The budget-friendly pricing makes it a no-brainer when compared to purchasing merely a spindle sander.

Top 3 Features:

1. 2-in-1 Sanding Choices

Woodworkers are rewarded with sand large vertical surfaces and round, curvy, and intricate surfaces. This is attributed to the presence of a belt and spindle sander. There are also a total of six pieces 0f 80-grit sandpaper provided!

2. 5 Varying Spindle Sanding Sizes

WEN understands the complexities of choosing the right sanding paper, spindle size, and moving back and forth to figure out what works best while sanding. Thus, they have provided five spindle sizes – ½-inch, ¾-inch, 1-inch, one ½-inch, and 2-inch – for application-specific usage.

3. Durability

Made out of cast iron and other high-quality, durable materials, this spindle sander will last you through a plethora of low-level and high-level sanding projects.


  • Oscillating versions of belt and spindle sanding
  • Quick switching between belt to spindle and vice-versa
  • Exceptional stability during sanding operations
  • Standard port size for dust collection chamber
  • Handy for sanding small pieces


  • Oscillation cannot be stopped when not needed
  • Some users find it mildly noisy

3. WEN HA 5932 Variable Speed & Portable Oscillating Spindle Sander

Weighing a meager 6.64 pounds, this product makes for a lightweight, portable spindle sander. Even better, users can alter the sanding speed to anything between 1800 and 3200 RPM. If you’re experienced at sanding, imagine the output you could produce with an oscillating rate of 50 to 90 times per minute.

It can easily be transformed into a bench-top spindle sander by using the mounting pad and clamps. Apart from these detachable parts, the top plate can be adjusted to ensure efficient material removal cycles.


  • Includes three rubber drums and four sanding sleeves
  • Consists of a one ½-inch dust port
  • Powerful 5-amp motor
  • 2-year warranty
  • Adjustable straight-edge guide plate

The extremely comfortable handheld feature allows users to access tight places for sanding tasks quickly. Moreover, the 4-inch stroke assures spotless sanding with an utterly butter-like smooth finishing.

Were you worried about shards entering the base plate? Do not worry as there is a big 13mm washer attached to the shift. As it is placed just before the sanding sleeve, you can be sure to restrict the unwanted entry of dirt particles.

Top 3 Features:

1. Portable

The effectiveness of carpentry equipment that is portable always surpasses heavy-duty equipment that needs plenty of organization, assembly, and space. Despite weighing under 7 pounds, it allows users to change between multiple operating speeds.

2. 4 Sanding Spindle Pieces

These four different diameters are beneficial to work on small arcs, broad curves, and unpleasant contours. Whether you’re sanding furniture or little sculptures, this spindle sander is adept at both!

3. Variable Speed

What better than sanding equipment that allows the user to change the operating speed? Based on the type of result you require, set the number of rotations per minute that suits best.


  • Power capacity is enough for everyday sanding tasks
  • Space-conscious design
  • Low pressure needed while sanding
  •  Quieter than expected
  • Handheld sander


  • Insufficient power to act as a benchtop OSS (Oscillating Spindle Sander)
  • Ineffective sanding on 2’’ or thicker timber

4. CRAFTSMAN CMEW231 Random Orbit Sander, 3-AMP

The sleek finishing and overall built makes this RO sander an epic choice for DIYers. Keep in mind, this CMEW231 model is not cordless, but yet has a configuration of 3 AMPS and a 12,000 OPM capacity. These specifics contribute to helping users complete their sanding projects with no need for consecutive back and forth.

It also has a dust bag onboard. This bag is capable of being connected to an 11/4-inch vacuum hose. Don’t stress about having to compromise on durability due to the dust-intake feature. The main switch is dust-sealed and ensures the insides of your RO sander don’t get damaged.


  • Quality dust collection system
  • Compactible with 11/4” vacuum hose
  • Dust-proof switch
  • Corded electric built
  • Weighs 3.5 pounds

Whether you are removing painting or varnish, preparing surfaces, sanding corners, or smoothing seams, this 5-inch RO sander caters to all such applications, that too without gouge-causing vibrations.

The dust bag may not seem to grab all the dirt particles around, but it definitely does a job as good as a detail sander does.

Afraid to take a leap into the domain of slightly challenging woodworking projects? Check out this woodworking 101 guide.


  1. Solid Construction - Using it even on full-fledged construction sites won’t harm the built in any way. The entire outer casing is really well done, both in the case of aesthetics and giving a compact feel
  2. Dust Sealed Switch - What better than a power switch that comes fully-protected from the tiniest of dust particles? Irrespective of the material density, quality, and grains, you can be sure that your switch won’t face problems.
  3. Minimalistic Built - This is the reason that users are awarded an exceptional degree of comfort (minimal vibration) and flexibility in the way they use the RO sander.


  • Velcro-themed RO sander
  • Small size but high-power capacity
  • Capable of high-speed sanding
  • Perfect RO sander for small to medium intensity jobs
  • 3 year limited warranty


  • Need to purchase an accessory for shop vacuum

5. TACKLIFE PRS01A 5-Inch Random Orbit Sander

This could surely be a top candidate for the best random orbital sander on this list. Apart from having the highest OPM (13,000) amongst all our shortlisted products, it also features a power switch on the upper end of the sander. It is placed so as to make it convenient to turn it on or off while in use.

Another added perk is its ability to get into the tightest of spaces for sanding purposes. This makes it an epic option for DIYers who frequently work on different types of tables, stands, dressers, and other furniture. 


  • Plastic dust collection box
  • Corded electric RO sander
  • 120V at 3 AMPS and 350 Watts capacity
  • Compatible with polishing pads
  • Generates power at 13,000 OPM

Much like the other RO sanders, this also has an all-ball bearing built that comes with fantastic construction. But the added benefits are several; low noise, low vibration, swirl-free finishing, and greater control over the equipment.

Weighing 3.4 pounds it may be a little heavier than other RO sanders. But this factor is neutralized by the ultra-high OPM of 13,000 orbits per minute.


  1. 6 Adjustable Speed Dial - This lets users set the required speed based on the type of work they are undertaking. Functioning at 13,000 OPM, it beats the above options in terms of power as yet.
  2. High-Performance Dust Collection System - What do you expect when the RO sander possesses a microfilter capable of trapping particles as tiny as ½ micron in diameter? This also eliminates the chance of the operator inhaling little specs of dust.
  3. Sandpaper (12 pieces) - This comes as an added perk as you won’t have to spend additional money, at least in the beginning. There are 6 pieces of 80 grit and 6 pieces of 180 grit sandpaper to perform the most common sanding operations.


  • Variable speed control dial
  • Literally no sense of weight and vibration
  • Quiet enough for a RO sander
  • No need to spend on sandpaper initially
  • 3-year tool & battery Significantly speeds up projects


  • Size is slightly big
  • Dust containers can get jammed

6. Makita XOB01Z 18V LXT Lithium-Ion Cordless RO Sander

Firstly, the XOB01Z works with only an 8 hole quick-change 5” hook-and-loop abrasive disc. This greatly increases the diversity in using it for various projects. In fact, you will be given a 120 grit sanding paper which should last through the initial periods of usage.

Top-performance is a sure-shot attribute due to the detail-oriented formulation of the 1/8” random orbit section. This along with the pad brakes have undergone amazing innovation for lightning speed sanding and attractive finishes.


  • 50% longer runtimes
  • Battery provides 3X faster charging
  • Switch and bearing are dust-sealed
  • Quick-change 5” hook-and-loop (8 hole) abrasive paper
  • Battery-powered cordless RO sander

One cannot avoid praising the Lithium-Ion battery. It gets fully-charged in 30 minutes and offers 25 minutes and 50 minutes of battery life for low speed and high speed usage respectively.
Also, the speed setting can be done using an electronic switch. There’s no hassle of turning knobs or reading digital screens. Simply use the one-touch switch to alter between slow, medium, and fast speed settings. 


  1. Lithium-Ion Battery - The battery composition reduces waiting periods between charging sessions. Expect up to 3X rapid charging as compared to other RO sanders. Even better, this is accompanied by a generously extended runtime.
  2. 3 Speed Setting - Despite being small in size, it comes with the following speed setting options, 7,000/9,500/11,000 OPM. Choosing amongst the three can be done using a one-touch electronic control switch.
  3. Pad Braking System - This system is created to cancel the possibility of common free-spins that ruin the finishing touch. Each sanding task will portray precision and beautifully sanded surfaces as the end product.


  • Functionality keeps up with durability
  • Easy vertical battery installation near dust pouch
  • Small, yet 3 different speeds of operation
  • Reduced fatigue due to strategically designed grip
  • Added 5” round abrasive disk


  • Dust can enter between bearing and plastic shocks (though cleanable)

7. ​Milwaukee Electric Tools 2468-20 M18 Random Orbit Sander

Powered by M18 batteries, the most sought-after batteries in the whole domain, the 2468-20 is equipped with 67% and 25% more capacity than 3 XC and 4 XC batteries respectively. This is complemented by almost similar weight and footprint. All this because of the lithium-ion cell upgrade in the battery.

The motor is so powerful that users will observe greater efficiency while sanding. More material can be worked upon in a single battery charge, as compared to other RO sanders. Keep in mind, this depends on how you use the principle of pressure in your favor.


  • Weighs 2.7 pounds
  • Cordless electric built
  • Variable speed dial (7,000 to 12,000 OPM)
  • Semi-transparent extension to avoid dust box and battery clashing
  • Works on an M18 3Ah battery pack

Moreover, it has a 5-inch sanding pad with a healthy 1/8” orbit diameter. The former can be changed in under 30 seconds using the hook-and-loop system. Whereas the latter fastens the process of sanding large surface areas.

Even the variable dial is made considering user preferences and can simply tweak the output of the RO sander with minimal efforts.


  1. Powerful Motor - The power ratings are proof that the motor comes under the category of powerful motors. Users can easily remove more than the average amount of material on a single battery charge.
  2. RedLithium Battery Technology - Using an M18 3Ah battery pack, this delivers 35 to 40 minutes of runtime on maximum power usage. At around 9,000 to 10,000 OPM, the runtime can easily extend to an hour.
  3. 1/8” Orbit Diameter - Though labeled as 3/32-inch, it means the same thing as the classic 1/8” orbit diameter. This, along with the 5-inch sanding pad maintains the global standards for most RO sanders.


  • Low noise tool
  • Ergonomic design
  • Robust power
  • Side handle & side clip for added safety
  • LED battery charge level indicator


  • Battery and charger are not included
  • Feels a bit bulky when put to extended use

8. SKIL SR211601 5” Random Orbital Sander

The majority of the hand-access portion is coated with high-quality rubber. This offers stability, comfort, and a solid grip while sanding. If your hands tend to vibrate during sanding tasks then the shock-absorption handle design could curb this downside for good.

Engineers at SKIL have induced a level of precision that promises gouge-free sanding along with clearance of 95% of material waste. The best part is that one could use it on plastic, metal, or even wood, and the quality of sanding remains constant. Just make sure to shift between speeds based on the material being sanded.


  • 2.8 AMP motor offering 13,000 OPM
  • Weighs 3.44 pounds
  • Counterweight balance combats hand fatigue
  • Compactness permits corner sanding
  • User control is not compromised despite the ability of semi-detail sanding

Wondering how does the X-flow dust collector help? It creates an incredibly lethal suction force through 2 small channels. This suction force is because of the narrowness of the X-shaped funnels.

More than anything, the dust container is a plastic box that can be detached via a mild jerk. Don’t worry, it’s strong enough to stay intact while sanding!


  1. High power capacity - Rated as per a 2.8 AMP motor capable of performing at 13,000 OPM, this RO sander works smoothly on a plethora of distinct sanding applications..
  2. Ergonomic Design - The manufacturers have built the handle after plenty of trial and error. The rubber-textured grip doesn’t cause jerks that would either be uncomfortable or cause little gouges on the surfaces.
  3. X-Flow Dust Collector - As the design of the dust collector has been emphasized, you can expect amazing dust collection capabilities. This is solely due to the X-flow design that makes use of cyclone-like force during dust collection.


  • Speed control is very effective
  • Eats through wood with Duragold sandpaper
  • Exhaust vents remove dust without any manual operation
  • Sanding pads are easy to replace
  • Comes with 3 sanding discs


  • Dust collector not good enough for bulky sanding projects

9. Ryobi P411 One+ Random Orbit Power Sander

For all you cordless power tool freaks out there, the Ryobi P411 requires zero extensions and lets you enjoy the freedom of working without jumbled wires. Though you’ll have to get the battery yourself. But the investment for a Ryobi One+ battery would power the RO sander with an impactful 18V lithium-ion unit.

Speaking of the grip, it is made of rubber infused with notches. This blocks most part of the vibrations and helps you improvise on smooth sanding techniques.


  • Cordless electric motor
  • Compatible with Ryobi One+ 18V battery systems
  • 10,000 OPM rating
  • Rubber texturized grip for simple usability
  • Weight and power in sync require minimal pressure

Be wary of the angle you hold the sander at. The sooner you figure out what works best, the sooner you’ll witness the true potential of this small-sized power tool.

There’s no kind of tedious assembly that needs to be done. Simply get the RO sander out of the box and clip a sanding pad using the hook-and-loop arrangement. You’re good to go!


  1. Durable Dust Bag - Forget about thinking whether wooden or metallic shrapnel will tear the dust bag. The materials used in building the dust bag are tear-resistant.
  2. Super Strong - You’ll be shocked when you notice the strength and precision go hand-in-hand. Hardly any RO sanders of this size offer the same amount of power.
  3. 10,000 OPM - If you’re experienced and know the concept of applying the right pressure at different OPM settings, then this RO sander would excel in completing all polishing and sanding related tasks.


  • Can be used with felt-backed buffing pads to polish/wax cars
  • Works for 6X longer with a 5 Ah battery
  • Lightweight construction
  • Compatible with 18V batteries of other Ryobi tools


  • Doesn’t come with batteries

10. Ginour 5-inch Random Orbit Sander

Which manufacturer gives 3 different types of sandpaper along with an RO sander? That too 5 pieces of each! The 80, 120, and 180 grit sandpapers prove to help in different types of sanding tasks. Use the coarse sandpaper for a high material removal rate. Whereas using the fine sandpaper can take a little longer but will achieve a smoother finishing.

Guess what? There’s no need to disassemble or assemble any new parts. Simply tear and paste the sandpaper and continue operating the machinery.


  • Comes with sponge disc and wool disc
  • 2 super-large vents for component protection
  • Easy to perform sandpaper replacement
  • Works for rust/paint removal and wood polishing
  • 2.5 AMP with a rating of 300 Watts

In case you plan to polish or wax your vehicle with the RO sander, attach 4-inch foam pads for better results. Also, if you decide to use the sander for polishing a wall, please give it a pass or else internal components will burn and the sander will smoke.

Though the vents are big and there is a microfilter, you want to always keep the sander flat while working. This is the best way to divert the dust into the dust box.


  1. Enlarged Vents - There’s not a chance that the components in the random orbital sander can get damaged due to internal heat. The 2 large vents ensure heat dissipation by avoiding components from burning.
  2. Microfilter - Besides having a detachable dust box, there is also a microfilter in the dust collection system. This filters out particles as small ½ micron in diameter.
  3. High-end Specifications - So what if your RO sander is cordless? This 5-inch Ginour RO has a 2-meter cable and can work at 300 W performing up to 13,000 OPM. It’s super easy to assemble and can be used at 6 different speeds.


  • Comes with 15 sandpapers of 3 types (80, 120, and 180 grit)
  • Made of quality materials
  • Effective dust collection setup
  • 6 settings for speed management
  • Quiet and lesser vibrations


  • Sander will smoke during wall polishing

Buyer’s Guide: What to Look for in the Best Random Orbital Sander?

Not all of these RO sanders could be the best random orbital sander for you. Based on your application type, the body size, power rating, base plate size, usability, and overall configuration, would impact the effectiveness of the RO sander.

Here are a few things you must decide between:

1. Power Source

A random orbital sander can either be powered by pneumatic means (compressed air), rechargeable batteries/cordless, or an electric cord. Based on the type of power source, the performance and usability of the sander varies.

  • Pneumatic RO sanders are often used by professionals who do sanding for a living. If you have an air compressor capable of giving an output of 40 CFM or higher then this power source could help you sand huge surfaces in record-breaking durations.
  • Rechargeable Battery/Cordless RO sanders work well if you need to perform sanding in different areas with no power source nearby. The batteries can be changed after a single charge (30 to 50 minutes) has been exhausted. There’s no need for messy cords or extensions.
  • Electric Corded RO sanders are reliable as they offer long usage times. This is because they are powered through a wall socket. If you work in closed spaces or at a specific workstation then corded RO sanders are your best bet.

2. Base Plate/Sander Disc Size

This is a section on the base where the sandpaper is added. Generally, the common disc size for RO sanders is 5-inches and works well for finishing-related projects. However, you can purchase a 6-inch or bigger sized base plate for high-end sanding tasks. For best results, make sure these bigger sized base plates are powered by pneumatic means.

Luckily, you can tweak the sander disc size too. Find an RO sander that lets you attach bigger sander discs for contacting greater amounts of the surface area.

Under 5-inch sanding discs are known to tackle sanding tasks on smaller and more cornered spots. Make sure the process to change the sanding disc is simple and does not take more than a minute to complete.

3. Dust Collection System

You could either choose a quality RO sander that comes with a high-performance dust collection system, or you could opt to wear a mask. Although RO sanders with a dust collection system are generally priced at a few dollars more and are worth it. The system ensures that you can work in a clean environment and you don’t inhale dangerous sharp specks of the material.

When you choose an RO sander with the dust gathering system, make sure the dust storage bag is durable and can expand when filled. You don’t want a poor quality dust bag that tears or even fails to store different kinds of materials due to their varied bulkiness.

4. Orbital Speed

Denoted as OPM, the orbits per minute rating will decide the output your RO sander is capable of. OPM ratings can vary from 4,000 to 15,000. A lower OPM (below 6,500) comes in handy for basic polishing/waxing or sanding soft materials. Whereas a higher OPM (between 6,500 and 10,000) is the perfect rating for finishing applications.

In case you plan to involve yourself in detailed sanding that requires greater amounts of scraping then choose an RO sander with a much higher OPM (between 10,000 and 12,000).

Remember, the best random orbital sander should let you alter between at least 5 to 7 speed settings.

5. Variable Speed Dial

Though the sandpaper grit rating normally defines the quality of sanding performed, an attached variable speed dial offers the operator greater control over the force of sanding. Switching between low and high speeds helps in fine sanding and finishing coarse materials quicker.

You want to study the user convenience offered in case of such dials. The button/switch/knob must be able to be used while sanding. The user shouldn’t have to stop sanding, switch the speed, and then restart.

6. Quality and Reliability

Look for materials in the composition of your RO sander that are durable and sure to sustain rigorous woodworking tasks. Everything from the handle, base plate, motor, hook-and-loop system, and the power source should be constructed with quality materials.

The best random orbital sander would have an extremely tight-fitting grip and absorb 99% of vibrations, all credits to the use of accurate materials.

Also, look for a long-enough warranty. Most RO sanders come with 1 to 2-year warranty options, but for greater sander security you must choose a 3-year warranty.

Frequently Asked Questions (FAQs)

Is an RO sander better than a palm sander?

An RO sander is better than a palm sander when you want to work on larger surface areas. Also, if you are looking at finishing large surfaces that haven’t been painted/treated yet, an RO sander works best. Palm sanders are good for sanding already painted/treated wood.

Can my RO sander act as a piece of polishing equipment?

Yes, an RO sander can be used as a polisher as long as you attach thick felt foam pads. This makes it ready to use on vehicles, walls, and even other equipment.

What does “random” in random orbital sander mean?

The term “random” indicates a randomized motion of the sanding pad. Apart from following an elliptical pattern, the circular pad rotates on the primary axis in a random manner. This is what assures swirl-free and smooth finishes.


Each of the power tools listed in this guide deserves the title of the best random orbital sander. Compare the features, pros, and cons, based on the sanding operations you perform. Above all, pay close attention to the configuration of the RO sander you choose.

As a bonus read, we have some additional reviews and buyer guides for our readers. Here are 10 fantastic framing nailers to buy in 2020!

Having a tough time cut chunks of wood? Here are 10 high-performing reciprocating saws in 2020!

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