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Model #R4840

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Oscillating Edge/Belt Spindle Sander

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  • Next generation sander
  • More power and beefier bearings than previous model
  • 2 tools in 1, belt sander and spindle sander
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Product Overview

This versatile benchtop sander features a 4 in. X 24 in. sanding belt that rotates and oscillates. It can quickly be converted to a spindle sander with 5 different size spindles. The 1,725 rpm spindle speed and adjustable angle table handle any sanding job. Dust collection is a snap with the 2.5 in. rear dust port.
  • Quick-release belt tensioning for quick tool-free belt changing
  • Tubular frame for strength and low vibration
  • Rubber feet with holes for fastening to a bench
  • Large oscillation range provides prolonged sanding sleeve life
  • Includes- sanding machine with oscillating belt sander and sanding belt, 1/2 in. 3/4 in. 1 in. 1-1/2 in. spindles and accompanying washers and spacer ring inserts
  • 5-year limited warranty

  • California residents

Additional Resources

From the Manufacturer

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1 in. x 42 in. Belt with 8 in. Disc Sander
NameOscillating Belt and Spindle SanderOscillating Edge/Belt Spindle Sander1 in. x 42 in. Belt with 8 in. Disc Sander
Save $110.99 (26%)
Power Tool FeaturesLockout Power Switch,No Tool Belt Change,No Tool Disc/Pad ChangeNo Tool Belt ChangeLockout Power Switch
Voltage (volts)120 V120 V110 V
Dust collection typePortPortPort
Bench & Stationary Tool TypeBelt & Spindle Combo SanderBelt & Spindle Combo SanderSander
View ProductView ProductView Product



Belt length (in.)24Belt width (in.)4
Disc table length (in.)0Disc table width (in.)0
Product Depth (in.)18.8 inProduct Height (in.)18.9 in
Product Width (in.)21.5 inSpindle Diameter (in.)0.5
Spindle Height (in.)3.4Spindle table length (in.)19.8


Amperage (amps)6 ABench & Stationary Tool TypeBelt & Spindle Combo Sander
Color FamilyOrangeConditionNew
Cord Length (ft.)6Dust collection typePort
Maximum belt sanding speed (ft./min.)1350Maximum Speed (rpm)1725
Minimum belt sanding speed (ft./min.)1350PortabilityBench
Power Tool FeaturesNo Tool Belt ChangeProduct Weight (lb.)45.2 lb
Tools Product TypePower ToolVariable SpeedNo
Voltage (volts)120 V

Warranty / Certifications

Certifications and ListingsUL CertifiedManufacturer Warranty5 year limited

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 3.4
    out of 35 reviews
  • 53%recommend this product
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Showing 1-10 of 35 reviews
Works good once QC issues are resolved
Did they send me a factory refurb? Pros: Good dust collection. Cons: Many issues right out of the box, poor assembly QC, minor design flaws, factory damage repair. Take-away: Once I repaired all the issues, it runs well.
    5 found this review helpful
    Needed repair out of the Box
    Needed Repair out of the Box. I got this in Dec. 2021, and it sat in the till now because I just did not have time or a space for it. But I got around to unpacking it and everything look good at start. But when troughing out the packaging plastic that wrapped the unit in the box I found a shoulder bolt or screw as they call it just lying in the plastic bag. I looked all over and could not find any place for it. But I did not stop there I checked the manual and then the replacement parts sheet. Thats, were I found only 4 places for a shoulder bolt. all under the motor cover and on the linkage. So, I removed the cover and the orange front to get enough cord free to move the cover to the side. Re installed the bolt AS per Ridgid I did not add lock tight, so I did not mod their original design. You see I contacted Ridgit about the Issue after I found out the problem. Now they say I might have voided my warranty. Any way repair is made and I informed Ridgid and sent pictures. But because of customer service response about this issue this item does not deserve anything more than 3 stars and that's only if it holds up. I won't know that till a couple of months from now.
    • Verified Purchase
    6 found this review helpful
    Glad I Finally Bought One
    Plenty of power to round corners into a triple-layer 3/4" plywood stack. The dust collection is amazing. Takes less than a minute to sway from spindle to belt mode. Everything has worked perfectly for me.
      • Recommended
      2 found this review helpful
      Awesome oscillating saw!
      Absolutely love this oscillating belt and spindle sander by RIGID. This product is very straight forward and super easy to assemble (basically just attach the belt or spindle...depending on your job requirements). Very smooth operation. Able to fasten to bench or table, but bolts are not provided. There is also a dust port to attach to dust collection system.
      • Recommended
      2 found this review helpful
      Well done oscillating bench-top sander, powerful and complete
      Ridgid Oscillating Edge/Belt Spindle Sander is my first workbench sander and am impressed. Previously, used a portable spindle sander and bolted a smaller belt sander upside down on my workbench. It worked, but wasn't the best. When it's all together like this one, the setup is quicker and the end result is better and more comfortable, since sanding can be tedious. The difference is it feels like a solidly built tool, not my mashup makes the job go fast. This is a newer model from an earlier Ridgid model I've seen. It's essentially the same, without the orange colored enclosure, now an open tubular frame with plenty of handholds to carry it, since it's over forty pounds. They in the instructions show side places to hold it. The knobs are also redesigned to make them easier to tighten and bigger. Ridgid's design provides flexibility to position the work on a large flat aluminum table surface that can be angled as needed. The sander top is 19 -inches deep by 22-inches wide. As seen with serious bench sanders, the table goes from horizontal down to 45 degrees with stops at often used angles. A tilt table is a safety issue, keeps the work-piece fully supported. Ridgid's table also comes with a track slot for a miter gauge (not included) to better position sanding narrow end boards square, keep them flush to the belt. Checked the top for horizontal against the belt with a square, factory settings are spot on. The hinged top locks with a knob on the right side with the angle markings. Some other sanders have seen are smaller, less capable holding work. Another safety issue and helpful is a work-piece stop attachment when using the web belt. It keeps the work from slipping and shooting off the belt. The tool uses a 24-inch long by 4-inch wide sanding belt that runs at 1,350 feet/minute. The spindles are various widths up to two inches in diameter that run at 1,750 revolutions/minute. Spindle storage is in the tray on the bottom, and the web belt mechanism can be stored in the back when using the spindle. Would have liked a clear cover for the small washers, for me easily lost. This is a sturdy sanding platform. It's got a 6 amp motor, makes little noise, no more than my big router. Sanding as said, can be tedious and this worktop sander makes it from tolerable to enjoyable. My hunch it's the bigger motor and its overall design that makes it all a nice package.
      • Recommended
      5 found this review helpful
      A great machine improved!
      I was really pleased to get a RIDGID Oscillating Edge/Belt Spindle Sander through the Seeds program, and this is going to be an easy review to write. I have had this machine's predecessor for years, and 'run the wheels off it' - it was really showing its age. The new machine is essentially the same as the old one, the differences all being in detail, and all improvements. The most obvious change is that the new machine uses a welded open steel frame in place of the old machine's plastic chassis. The open frame will stay much cleaner in use. The belt accessory is also slightly different and incompatible with the old machine, although it uses the same belts. The aluminum work surface is smoother on the new machine, and dust collection with a vacuum is improved. It is the belt accessory that sets this machine apart from ordinary spindle sanders. You can get a lot more done with a belt, a lot faster, and they last much longer than the drums, which makes it much cheaper to operate. Of course, you can also use drums like a regular spindle sander. This machine beats a regular spindle sander hands-down. Every shop should have one, especially now with all the improvements.
      • Recommended
      5 found this review helpful
      Well designed, intuitive, and sturdy!!
      RIDGID hit a home run with this oscillating belt and spindle sander design!! I love that the item comes almost completely assembled. You will be ready to sand within 10 minutes of unboxing the unit. This is a well thought out sander design as all the various sized attachments have built in storage with size labels below the working table (see photo). This makes finding your right attachments easy and prevents them from being misplaced. I also like that there is a built in cord wrap around for storage, and the table folds for easy storage (see photos). Changing between the belt sander and the various sized spindles is a cinch and only takes about 1 minute. Both the belt and spindles move up and down while rotating to extend the life of the sandpaper and to prevent overheating the sandpaper. Adjusting the tracking on the belt is easy as well, just a quick turn left or right of the tracking knob to ensure that the belt does not ride off the rollers. Overall a very well thought out and sturdy piece of equipment that I’m happy to add to my tool collection.
      • Recommended
      6 found this review helpful
      The spindle is not balanced. Be watchful when using the...
      The spindle is not balanced. Be watchful when using the drums, doesn’t take much pressure until the sandpaper sleeve will start to slide.
      • Verified Purchase
      • Verified Purchase
      Table coating not durable
      Coating on aluminum surface wares off and turns your wood black
      • Verified Purchase
      Showing 1-10 of 35 reviews