Astro Pneumatic Tool Air Belt Sander 3035 vs 3036 vs 3037

Operating with just a 1/2 inch radius thick sanding surface, air belt sanders are the thinnest sanding tools there are in the market. Their lack of girth, however, enables them to get to places where the thicker belt sanders cannot.

You can use to remove spot welds in tight corners because it is only half an inch thick.

The three air sanders coming up for review in this article spring from the assembly line of Astro Pneumatic. Astro Pneumatic has been serving the automotive aftermarket industry for over 30 years.

It’s why the air belt sanders appear more oriented for car repair garages and metalworkers than woodworkers.

Let’s get down to the nitty-gritty and start our review of the Astro Pneumatic Tool 3035, 3036, and 3037.

Astro Pneumatic Tool Belt Sander 3035 vs 3036 vs 3037: Which’s the Best

Astro 3035 Air Belt Sander


Astro Tools 3035 Air Belt Sander (3/4" x 20.5


Thanks to a larger pulley that enables the outfitting of thicker specialty belts, this entry-level air belt sander makes fast work of any surface the user sets it on. The .5 horsepower motor chews through paint jobs and its thin surface allows for more precision contouring work. You’re basically sculpting the area you’re sanding if you’re using this tool.

Top FAQs

Q: What belt sizes does this air sander use?
A: 3/4 x 20 to 1/2 size. You should look for the ones from Global Abrasive Products with product number #801034-3218 120 grit and 801034-32184 60 grit belts.

Q: I need to sand a beveled inside corner. What’s the measurements of the sanding surface so I know how much it’ll cover.
A: The radius is about an inch.

Q: How long is it without the guard?
A: It’s 1.75 long.

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Astro Tools 3035 Air Belt Sander (3/4" x 20.5


  • User-friendly features like a belt tension lever, rubberized handle, and protection guard.
  • Extra pulley space for the thicker special padded belts.
  • Variable speed for work on different phases of the job and different surfaces.


  • The tip may be too big to fit 1/2 inch spaces. You will need to make modifications in order to make it fit.

Bad handling or misuse of the tool voids the warranty. Considering this is a power tool, Astro Pneumatics should have more consideration when it comes to how rough work situations and sites could be.

It’s a good tool to have if you’re actually buying for price. It’s not going to drain your finances if you decide to take one home. The Astro 3035 will perform its job well and will help you prep those metal surfaces easily.

Astro 3036 Air Belt Sander


Astro Tools 3037 Air Belt Sander (1/2" x 18


Like the other air belt sanders in this article, this sander cranks up to16,000 revolutions per minute at its maximum variable speed setting. The Astro 3036 air belt sander can do wonders on paints and sealants and you can use it to smooth out hard to reach areas like the legs of your bed or the interiors of a car. It’s a sander that aims to please.

Top FAQs

Q: What is the tip on this sander?
A: It has a steel tip.

Q: How long is the warranty coverage?
A: It’s only a year.

Q: What’s are the dimensions of this thing?
A: It’s around 16 inches wide while the belt itself has a radius of 1/2 with a length of 18 inches. The sanding surface on the tool is 1/2 by 7 inches.

Astro Pneumatic Tool 3037 Air Belt Sander (1/2" x 18


  • Variable speed control for different kinds of sanding jobs.
  • More pulley space for the thicker sanding belt types.
  • Easy to use belt tension lever with non-slip grip handle.


  • The steel roller at the end of the tool may impact how fast belts get spent.
  • No noise suppression so users can expect some noise from this tool.
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What I found problematic is how fast this sander reduces the abrasive materials at a belt into dust especially if you grind it against metal. You’ll just have to work it on softer surfaces if you want to save on belts.

If you’re looking for a good air belt sander you’ll use rarely, you should consider buying the Astro 3036.

Astro Pneumatic Tool 3037

Astro Tools 3036 Air Belt Sander (3/8" x 13

The Astro 3037 offers the fastest belt change you’ll find in its line thanks to Astro Pneumatic’s design changes of making the form factor accept the universal belt sizes. Its lever-release quick belt change system allows you to put in new belts after just 10 seconds.

Users can also adjust the sander’s arm within the 360-degree range by using the wrench. The 16,000 max rpm speed allows you to instantly smooth out spot welds.

Astro Pneumatic Tool 3036 Air Belt Sander (3/8" x 13

Top FAQs

Q: What’s the weight of this too?
A: It’s not that heavy. It’s 2.2 lbs.

Q: Does it come with a case?
A: No but it does come with a 40, a 60, and an 80 grit sanding belts

Q: How does this thing power itself?
A: The tool uses air.


  • .5 HP motor that makes the tool great for spot weld removal
  • Variable speed control to manage different kinds of sanding work
  • More pulley space to for thicker kinds of sanding belts


  • The metal tip at the end of the roller crushes abrasive material of the belt thus smoothing the sanding properties out faster.

It’s hard to find replacement parts for this sander so you’ll need to send it to the service center for repairs. If you’re really out of luck, you might just have to buy a replacement.

The 3037 is proof Astro Pneumatics has been listening to its buyers by attempting to fix the steel tip issue. The steel tip in the other models tends to eat away at the belts faster since it makes the belts more rigid once they’re spinning. This one has the rubber tip now and may well be worth your investment.

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What Is The Difference?

After putting all three models side by side, the 3037’s upgrades make it come out on top against the 3035 and the 3036. On paper, the three air sanders perform the same: all have .5 horsepower motors that work off 4 cubic feet per minute air pressure. The 3037 wins out thanks to its small design improvements. It’s practically the 3035 and 3036 but dressed slightly better.

Final Thoughts

It looks like Astro Pneumatics is listening to its market base and this means its next air sander may have marked improvements. It will be good to keep an eye on what its hardware engineers will cook up in order to solve some of the design issues like belt consumption.

We’ll be sure to keep our fellow power tool enthusiasts updated on new releases coming from Astro Pneumatics.