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Makita

Makita 9403 4" x 24" Belt Sander, Teal, Corded Electric

  • Based on 2,744 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Jul 8
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Style: Belt sander


Features

  • Low noise (84dB) for operator comfort
  • 4" wide belt with a speed of 1,640 ft./min. for fast material removal
  • Labyrinth construction seals and protects motor and bearings from dust and debris for longer tool life
  • Large front grip is positioned for operator comfort
  • Innovative design for sanding flush to wall with nose and side of sander

Description

Makita’s 4" x 24" Belt Sander, model 9403, combines power and speed with ease-of-use features and less noise for fast and efficient stock removal. The 9403 is ideal for woodworkers, carpenters, furniture makers, floor installers, deck builders and general contractors who require a best-in-class belt sander. The 9403 features a powerful 11 AMP motor with electronic speed control to maintain constant speed under load, with a 4" wide belt and a speed of 1,640 ft./min. for fast stock removal. The 9403 also features less noise: at only 84dB, it is one of the quietest sanders in its class. From the Manufacturer This belt sander features an extended base to allow flush sanding. Its 4" wide belt with a speed of 1,640 ft./min. makes for fast stock removal while its 84 dB keeps the chatter down. The large front grip ensures operator comfort and control and an easy lever control makes changing belts a snap. The replaceable ceramic wear plate keeps maintenance time to a minimum and the low profile provides solid balance and less gouging. With a highly efficient dust collector, the grit stays contained. This sander is double insulated. FEATURES Quietest belt sander in its class (only 84dB) 4" wide belt with a speed of 1,640 ft./min. for fast material removal Labyrinth construction seals motor and bearings from contamination Large front grip is positioned for operator comfort Cord is located on the upper portion of the handle for operator convenience Dust bag swivels 360° for more convenient operation Unique design allows flush sanding to walls Double insulated What's in the Box 1 ea. Abrasive belt (80; 742322-9) Dust bag (122562-9) SPECIFICATIONS Belt size: 4" x 24" Belt speed: 1,640 ft./min. Amps: (115V) 11.0 Overall length: 13-7/8" Net weight: 13.0 lbs. Shipping weight: 15.4 lbs.

Brand: Makita


Product Dimensions: 6.5"L x 13.88"W x 8.75"H


Grit Type: Medium


Voltage: 120 Volts


Power Source: Corded Electric


Grit Type: Medium


Voltage: 120 Volts


Power Source: Corded Electric


Amperage Capacity: 11 Amps


Grit Number: 80


Maximum Rotational Speed: 27.33 Feet Per Second


Shape: Rectangular


Item Dimensions L x W x H: 6.5"L x 13.88"W x 8.75"H


Item Weight: 13 Pounds


Brand Name: Makita


Model Number: 9403


UPC: 088381025621


Global Trade Identification Number: 21


Manufacturer Warranty Description: 1-year limited warranty


Manufacturer Part Number: 9403


Included Components: 4" X 24" Abrasive Belt, 80 Grit (742322-9-1), Dust Bag (122562-9)


Unit Count: 1.0 Count


Item Type Name: Makita 9403 4" x 24" Belt Sander


Manufacturer: Makita


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Top Notch Sander
Style: Belt sander
Heavy duty belt sander. Powerful and does a good job. Easy to operate and changing belts is a breeze, as is adjusting the tracking. 80 grit paper is the heaviest I’ve used and it sands with that grit like a charm. The dust vacuum system works much better than I expected, however with that heavy grit paper the bag fills quite quickly. I highly recommend this tool. ... show more
Reviewed in the United States on May 6, 2025 by Michael E. Hogue
    • Unmatched Quality!
Style: Belt sander
This belt sander is a beast! The quality is second to none. Makita is known for quality and this sander lives up to their reputation. Heavy, industrial-grade build that will last for years to come. The details: 1) Anyone who has used a belt sander knows how much of a pain it is when the belt walks. Constantly having to recenter the belt is a problem with many sanders on the market today. You will not have that issue with this belt sander. I put the belt on, sanded until the paper was worn to nothing, and it remained in the exact same position the entire time. I went through 5 belts with the exact same results. I love it! 2) The quality of the belt sander is amazing. Heavy industrial-grade materials used to build a super-sealed workhorse of a machine. I've only had the belt sander a short period of time, but having experience with others of lesser quality I can assure you that this will last until you want to upgrade years from now. 3) The tool is heavy. Which doesn't sound great, but it is. You don't have to apply any pressure onto the belt sander for it to work and strip anything you apply it to. This was a welcomed surprise. If you have used a cheap belt sander in the past, you know what I'm talking about. Applying pressure puts extra wear on the motor and you go through belts faster. The life of the tool becomes less than advertised. Having the Makita do the work for you takes less work from you, takes less work from the sander, and ensures a long lasting tool and the most bang for your buck out of the belt. 4) The Makita belts are great as well. I sanded a 40' x 40' area of hardwood floor with 3 belts. I used 2 other belts in my shop sanding both metal and wood items for almost 2 days straight. It became fun, and almost a game to try and wear them down. I am incredibly impressed. Usually I just buy a decent generic belt that fits the sander. But, I'm sticking with the Makita belts for their quality and the fact that they never walk. 5) 5 stars for a tool I know I will have years from now. I'm bookmarking this page so I can come back in the future and edit this comment. I'm sure it will be positive! ... show more
Reviewed in the United States on August 11, 2016 by Dom MD
    • Very Solid, Very Well Built, Works Great
Style: Belt sander
I purchased this belt sander to sand the 4x4s for my grandkids swing set. We got a 50 grit paper and used it for a few hours to sand off the slivers and roughness. The power is great, it's smooth and not very loud. The belt adjustment is precise and the belt tracks well. My son in law tried to sand the cord. This was the end of our sanding for the day. I got to take apart the sander. First I had to get the cord out that was run up in the sander. I will tell you that the mechanical parts are solid and well built. Top of the line. The screws all screw into the metal body so you can tighten them back down snug. The rollers have a 7/8" nut shaped cone inside so I was able to use a rachet to back out the entangled cord. The cord was not cut, but I feared it might be internally damaged after being severely pinched. So I ended up shortening the cord. This was no problem since it has a sturdy very long cord. The layout and connections in the switch and neutral where great. It was very easy to reinstall the slightly shorter cord. When I restarted the sander I realized that the drive was not working properly. So I flipped the sander on it's side and removed the cover to the belt. I feared the motor or gears might be messed up. I was delighted to find that some of the cogs on the rubber belt had been stripped away when the cord suddenly stopped the sander. So rather than replacing the motor or broken gears, I replaced a $7 drive belt. Overall the design and implementation of the sand is excellent. It is designed and built to last. This is something you don't find in many power tools today. Kudos to Makita. I look forward to using the sander for years to come. ... show more
Reviewed in the United States on December 23, 2013 by BobbyG
    • Makita 9403 belt sander
Style: Belt sander
This is a great sander, well worth the money to me. I saved thousands of dollars by not getting a new deck so it was also a bargain. I had a 40 year old Sears 3 X 21 inch belt sander that served me well for years, but it started breaking the sanding belts, and drifting the belts sideways a lot, so it was not useful anymore. This sander did not break a single belt, and I wore out several of them with no breakage. The unit is well engineered, and the engineers recognized that the biggest enemy of a sander doing this much work was getting the heat and dust away from the sander as quickly as possible. It has very serious blower in it. I didn't even attempt to use that little bag for the deck I was doing, at first I hooked it up to my shop vacuum with an adapter I made. Then I realized that I didn't even need the vacuum, the sander had such a powerful blower. So then I just hooked up a vacuum hose going to a 5 gallon bucket, with the hose going through a scrap cloth sheet held on the top of the bucket by the rubber seal that comes with the bucket lid. That saved unloading the heavy shop vacuum, I just dumped the large amount of sawdust from the bucket periodically. Do not attempt to use this sander without a means to collect the dust. This is a serious heavy powerful tool, not for a weak person. With the motor electrical trigger locked on, it can get you in trouble fast if you are not holding on with good support. It also would be difficult working on vertical or underneath surfaces being so heavy. I only did the flat walked on surfaces of my deck, which were the most worn and in need of sanding. Then I stained it with Home Depot Behr opaque, water clean-up stain. ... show more
Reviewed in the United States on June 6, 2014 by RJM
    • It's as heavy as a boat anchor!
Style: Belt sander
As a Makita fan I've been eyeballing their belt sander online for a while. (I've never found one of their belt sanders in a store.) When it was heavily discounted during the black Friday event, I decided to snap it up even though it is not brushless. The design doesn't look like it has been updated to keep up with the sleeker hand-held electric tools they offer. Pros: This belt sander will remove the paint off of the side of a battleship. It's a workhorse. (So far.) The belt tracker works well. Belt changing wasn't a problem. Cons: It's as heavy as a boat anchor. I've worked with all types of belt sanders through the last 45 years - even vintage metal-bodied hand-held belt sanders, and I've never used anything as heavy as this model. Seriously, if you have weak hands or wrists, don't but it. Lifting it with one hand from one side of your bench to the other risks straining your wrist. Because of the weight I don't recommend this tool. ... show more
Reviewed in the United States on November 28, 2022 by CodyFord
    • Received used product instead of new.
Style: Belt sander
Ordered new. Received used. Belt sander is full of sawdust. Received replacement. Amazon customer service was helpful. The Mikita 9403 belt sander is very powerful. It is heavier than my previous sander but not unmanageable. I was able to strip the paint from 24 planks on my wood gate without worry of overheating. The Makita 4" x 24" belt sander performed much faster than my old 3" x 18" belt sander by 30%. The dust management system is far superior to my previous model. Adjustments to the belt tracking is simple. ... show more
Reviewed in the United States on October 8, 2025 by John Wagner
    • Awesome belt sander
Style: Belt sander
I spent a considerable time researching belt sanders. I have a large deck and the wood needs repainting, but first I have to remove the old paint as it is peeling and flaky. My belt sander research led me to cheaper models, but each review said Makita is best. So I bit the bullet, paid my money and now I have a great tool. My only mistake was ordering 80 grit belts, when I really need 40 grit to remove the paint. That has been a painful exercise both in belt destruction and sweat. Now I have 40 grit belts life is so much easier. It will still take me a good week to sand the deck (I am 70 and in the Texas heat), but at least I am now fully prepared. If you need a serious belt sander, this is the tool for you. ... show more
Reviewed in the United States on March 31, 2026 by Paul Hardman
    • Heavy duty.
Style: Belt sander
Does the job. It is very heavy
Reviewed in the United States on May 25, 2026 by marco

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